Entries |
Document | Title | Date |
20080204832 | Constructing a color transform using a neural network for colors outside the spectrum locus - A color management module which provides color values in a destination color space by interpolation of a LUT that maps from color values in a source color space to corresponding color values in the destination color space. The LUT includes cells corresponding to color values within a spectrum locus and color values outside the spectrum locus. The LUT is populated differently for cells within the spectrum locus and for those outside the spectrum locus. For cells within the spectrum locus, color values are calculated using a color transform constructed based on device profiles for the source device and for the destination device, and corresponding cells of the LUT are populated based on the calculated values. For cells outside of the spectrum locus, an artificial neural network is trained using the calculated color values, and the corresponding cells are populated based on outputs of the trained neural network. | 08-28-2008 |
20080239417 | COLOR PROCESSING APPARATUS AND COLOR PROCESSING METHOD - An output color is calculated from a fundamental stimulus value and a spectral support coefficient which indicate an input color using a calculation unit for calculating an output color corresponding to the input fundamental stimulus value and the input spectral support coefficient using a table whose inputs are a fundamental stimulus value and a spectral support coefficient. The interval of grid points of the table are uneven regarding the spectral support coefficient, and the interval in the vicinity whose relevant spectral support coefficient is zero is small as compared with the interval in the vicinity whose spectral support coefficient has a great absolute value. | 10-02-2008 |
20080239418 | ADJUSTING COLORANTS SPECIFIED IN A DIGITAL IMAGE - A method for making a device link ( | 10-02-2008 |
20080278779 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS - An image reading apparatus includes: a light source which irradiates illumination light to a document; an imaging element which images reflected light of the illumination light from the document; a color separator which performs color separation of the illumination light or the reflected light into at least three wavelength ranges including a first wavelength range, a second wavelength ranges and a third wavelength range; a light-receiving element which converts the reflected light imaged by the imaging element into an electrical signal as a document image of the document, for each of the at least three wavelength ranges; and an image processor which classifies the document image on the basis of the electrical signal in the first wavelength range and in the second wavelength range. | 11-13-2008 |
20080297862 | IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND READING-UNIT INSTALL METHOD - An adjusting unit adjusts an output level of digital data converted from image data, based on a correction coefficient for each color. A color correction unit performs a color-correction process of correcting a fluctuation of adjusted output level based on a color-correction parameter that differs from one image reading device to another. The correction coefficient is generated before a reading unit is installed in the image reading device such that the output level becomes a predetermined value when reading the original document without the color-correction process, and then adjusted without the color-correction process at a time of installing the reading unit. | 12-04-2008 |
20080309995 | COLOR PROCESSING APPARATUS, COLOR PROCESSING METHOD AND COMPUTER READABLE MEDIUM - The color processing apparatus includes: a first color signal obtaining unit that obtains a first color signal in a first color space; a color conversion unit that converts the first color signal in the first color space into a second color signal in a second color space according to a color conversion characteristic associating a color signal in the first color space with a color signal in the second color space; a calculation unit that calculates a distance of the first color signal to an outer boundary of a color gamut in the first color space; and a color conversion characteristic generation unit that generates the color conversion characteristic to be used by the color conversion unit to make the conversion. The color conversion characteristic generation unit changes a generation condition of the color conversion characteristic according to the distance of the first color signal. | 12-18-2008 |
20080316553 | Coloring Support System, Coloring Support Program, and Storage Medium as Well as Coloring Support Method - A coloring support system suitable for realizing coloring that matches colors imaged by a user is provided. | 12-25-2008 |
20090002782 | SYSTEM AND METHOD FOR CONVERTING OVER-RANGE COLORS - A method includes dividing an input range of color values of a first color space into a plurality of sub-ranges, wherein at least one of the sub-ranges comprises an over-range color value. The method also includes determining for each sub-range a level of accuracy in converting color values within each sub-range. The method further includes determining a processing step to be applied to input color values in each sub-range based on the determined level of accuracy. | 01-01-2009 |
20090009833 | COLOR CONVERSION APPARATUS AND COLOR CONVERSION METHOD - An object of the present invention is to display a color by sufficiently utilizing a color space capable of being displayed by a display. In order to attain the above described object, a color conversion apparatus according to the present invention includes unit that reads an original in which a whole reproducible color gamut is discretely expressed, and acquires color coordinates of a first color space, and color conversion unit that converts the acquired color coordinates of the first color space into a second color space, wherein the color conversion unit converts the color coordinates in the first color space to be substantially the same as color coordinates in the second color space. | 01-08-2009 |
20090021806 | SCANNER COLOR CORRECTION DEVICE AND CONTROL METHOD THEREOF - A color correction apparatus of a scanner and a method of controlling the same. The color correction apparatus changes data existing outside of the gamut boundary to the other data existing within a gamut boundary in order to correctly express a gamut, and correctly corrects the color of the scanner. The color correction apparatus includes a calculator to calculate CIE data corresponding to RGB data, and a correction unit to change the CIE data to new CIE data existing within a gamut boundary if it is determined that the CIE data exists outside of the gamut boundary. | 01-22-2009 |
20090021807 | METHOD AND SYSTEM FOR PREDICTING PRINT COLORS - Inherent reflectances and scattering coefficients of color materials to be used in producing a print are calculated, and target printing base solid predicted reflectances are calculated using the calculated inherent reflectances and scattering coefficients, and the spectral reflectance of a target printing base, according to the Kubelka-Munk theory. Colorimetric values are calculated from the target printing base solid predicted reflectances. Differences are determined between calculated target printing base solid predicted colorimetric values and standard printing base solid calorimetric values obtained from a color chart, whereupon target printing base halftone differential predicted calorimetric values are calculated from the determined differences. The target printing base halftone differential predicted colorimetric values and standard printing base halftone colorimetric values of the color chart are added, and a print predicting profile is generated. | 01-22-2009 |
20090021808 | METHOD AND APPARATUS FOR CONVERTING COLOR-DESCRIBING INPUT DATA, WHICH ARE SUITABLE FOR GRAPHICAL OUTPUT USING AN OUTPUT DEVICE, INTO COLOR-DESCRIBING ADAPTED OUTPUT DATA - In a method to convert color-describing input print data suitable for graphical output with aid of an output apparatus into color-describing output print data, color proportions, defined by the input print data, of at least one region to be inked with at least two color separations, are determined, and a color space value to be generated with aid of the color separations is determined. An association rule is determined to convert the input print data into the output print data while retaining the color space value. A total areal coverage of areal coverages defined by the output print data of the color separations to generate the color space value is reduced relative to areal coverages of the color separations defined by the input print data. The input print data is converted into the output print data with aid of the determined association rule. | 01-22-2009 |
20090034033 | IMAGE FORMING APPARATUS - A color-shift correction image is formed in a density D and it is determined whether the color-shift correction image can be detected successfully. If the color-shift correction image can be detected successfully, then the density is decreased. If the color-shift correction image can not be detected successfully, then the density is increased. In this manner, the minimum density is determined. | 02-05-2009 |
20090059326 | COLOR SPACE CONVERSION APPARATUS AND METHOD FOR CONTROLLING THE SAME - A color space conversion apparatus and a method of controlling the same, the color space conversion apparatus including: a first color space conversion unit to convert a first color space into a first Lab color space; a second color space conversion unit to convert a second color space into a second Lab color space; a spherical color space conversion unit to expand the first and second Lab color spaces into a spherical color space; and a spherical gamut mapping unit to perform gamut mapping between the first and second color spaces through spherical parametrization, thus avoiding problems in color reproduction caused by the lack of one-to-one correspondence between Lab color space values of the input and output devices. | 03-05-2009 |
20090067016 | COLOR PROCESSING APPARATUS AND METHOD THEREOF - Differences in color appearance due to the individual differences in color matching functions are corrected. Hence, a spectral data obtaining unit inputs spectral image data. A color matching function setting unit sets personal color matching functions. A referential color matching function setting unit sets referential color matching functions. A spectral image correction unit corrects the spectral image data based on the personal color matching functions and the referential color matching functions. | 03-12-2009 |
20090080041 | MULTIPLE DIMENSIONAL COLOR CONVERSION TO MINIMIZE INTERPOLATION ERROR - Linear transformations of L*a*b* color space are provided to minimize interpolation errors when performing multi-dimensional color space conversions involving lookup tables. Methods are provided for linear transformations (e.g., rotation and shear) to substantially fir the sampling grid to a given printer gamut. | 03-26-2009 |
20090086295 | IMAGE FORMING APPARATUS, IMAGE QUALITY CONTROL METHOD - A technique that can perform appropriate image quality control processing corresponding to fluctuation in a printing environment is provided. | 04-02-2009 |
20090097083 | IMAGE FORMING APPARATUS AND IMAGE PROCESSING METHOD THEREFOR - An image forming apparatus which is capable of suppressing occurrence of color moire. A second storage unit stores image data associated with at least two colors. A controller reads out the stored color-specific image data while designating a reading position in a sub scanning direction of the image data. A transfer unit transfers a color image onto a recording medium based on the read-out image data of each color. An image processing unit corrects the reading position in the sub scanning direction of the image data of each color according to profile data of each color defined based on position curve information in the main scanning direction of the transfer unit, when the controller reads out the image data. The controller regenerates the profile data if at least two pieces of the profile data satisfy a predetermined condition. | 04-16-2009 |
20090122371 | COLOR GAMUT FORMING APPARATUS, COLOR CONVERTING APPARATUS, COLOR GAMUT FORMING METHOD, COLOR CONVERSION METHOD, COMPUTER READABLE MEDIUM AND COMPUTER DATA SIGNAL - A color gamut forming apparatus includes a reference color acquiring unit and a converted color gamut forming unit. The reference color acquiring unit sets at least a saturated color, which is reproducible on a contour of an input color gamut, as a reference input color and acquires a reference output color which is a color obtained by converting the input reference color into a color being reproducible in an output color gamut. The converted color gamut forming unit forms, in the output color gamut, a converted color gamut in which the reference output color corresponding to the saturated color on the contour of the input color gamut is a convex point. | 05-14-2009 |
20090128869 | SMOOTHED ENTRIES IN A COLOR TRANSFORMATION LOOK-UP TABLE - A color transformation table is constructed in an imaging device. Unsmoothed entries are placed in a table. The unsmoothed entries are replaced by smoothed entries. The smoothed entries are indexed by a color dimensional value for each color dimension in a first color space. Each smoothed entry is a color dimensional value for a color dimension within a second color space. A first unsmoothed entry is replaced with a first smoothed entry, so that the first smoothed entry is a weighted mean of a subset of unsmoothed entries. The subset of unsmoothed entries includes the first unsmoothed entry and other unsmoothed entries that are indexed by the same color dimensional values as the first unsmoothed entry for all but a first color dimension in the first color space. | 05-21-2009 |
20090128870 | IMAGE FORMING APPARATUS AND IMAGE QUALITY ADJUSTMENT METHOD OF IMAGE FORMING APPARATUS - A reading section outputs density information of a gradation pattern image of a recording member. A gradation correction characteristic generation section generates a first gradation correction characteristic f(x). At first image quality adjustment, a detection section detects densities of patch pattern images on an image carrier, and the gradation correction characteristic generation section generates a second gradation correction characteristic g(x). At normal image quality adjustment, the detection section detects densities of patch pattern images on the image carrier, and the gradation correction characteristic generation section generates a second gradation correction characteristic g′(x). A calculation section calculates a difference gradation correction characteristic g″(x) between the gradation correction characteristic g(x) and the second gradation correction characteristic g′(x). An image quality maintaining control section multiplies the difference gradation correction characteristic g″(x) by the first gradation correction characteristic f(x), and adjusts an image quality of an image formed on the recording member. | 05-21-2009 |
20090147326 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - A color document is scanned using sensors of two color components, and monochrome image data is generated by performing a color conversion process on color image data made up of two color components obtained through the scanning. | 06-11-2009 |
20090147327 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER-READABLE ENCODING MEDIUM ENCODED WITH A COMPUTER PROGRAM - An image processing apparatus, including a color conversion part configured to conduct a color conversion of image data. The color conversion part extends an information amount of an output value in the color conversion based on a first minimum information amount possible to depict a gradation in a lattice point interval of an input value in a look up table used for the color conversion. | 06-11-2009 |
20090161183 | OPTIMAL NODE PLACEMENT FOR MULTI-DIMENSIONAL PROFILE LUTS FOR ARBITRARY MEDIA AND HALFTONES USING PARAMETERIZED MINIMIZATION - A method and system for optimal node placement of a color correction table first generate a high resolution color correction table. A low resolution color correction table is generated. Each node of the low resolution color correction table has a corresponding color correction value generated by interpolating the color correction values of the high resolution color correction table. A reconstructed color correction table is generated, and each of the nodes of the reconstructed color correction table has a corresponding color correction value generated by interpolating the color correction values of the low resolution color correction table using an interpolation method identical to an output device interpolation method. Differences between the color correction values of the reconstructed and the high resolution color correction table are quantified into a measure of error, and the node locations of the low resolution color correction table are adjusted, and the procedure is repeated. | 06-25-2009 |
20090161184 | Image processing device and method - An image processing device for converting input image data in input color space into output image data in output color space comprises an input unit configured to input a plurality of input pixel signals comprising the input image data, a designation unit configured to designate an achromatic condition for pixels corresponding to the plurality of input pixel signals, and an achromatic judgment unit configured to judge whether or not each of the plurality of input pixel signals input by the input unit satisfies the achromatic condition, wherein the achromatic judgment unit judges that a pixel which corresponds to a particular input pixel signal is an achromatic pixel where the particular input pixel signal satisfies the achromatic condition. | 06-25-2009 |
20090161185 | IMAGE READING APPARATUS, IMAGE READING METHOD, AND RECORDING MEDIUM - There are provided a first color processing step of performing color processing on an image read from a front side of a document and a second color processing step of performing color processing on an image read from a back side of the document. A color of the image color-processed in the first color processing step is set as an initial target. A color processing parameter used in the second color processing step is adjusted such that a color of the image color-processed in the second color processing step matches the initial target. The color processing parameters used in the first and second color processing steps are adjusted in multiple steps such that both the color obtained by the parameter adjustment and the color of the image color-processed in the first color processing step become closer stepwise to the color of the image color-processed in the second color processing step. | 06-25-2009 |
20090161186 | IMAGE PROCESSING METHOD, RECORDING MEDIUM WITH RECORDED IMAGE PROCESSING PROGRAM AND IMAGE PROCESSING APPARATUS - An image processing method for carrying out predetermined correction processing with respect to one or more items regarding the quality of color images and the image processing method comprises a judgment step for judging the necessity/nonnecessity of correction with respect to each of the above-mentioned items and a correction processing step for carrying out the predetermined correction processing with respect to the item judged as required to be corrected at the above-mentioned judgment step. | 06-25-2009 |
20090161187 | OUTPUT DATA GENERATING IMAGE PROCESSING - An image processing device generates output data used when an image displayed on a display device is to be output by an output device. The image processing device includes an output execution instruction input unit and a color space converter. The output execution instruction input unit inputs an instruction to execute image output via the output device. The color space converter carries out a first conversion process and a second conversion process. The first conversion process converts first device-dependent image data that expresses an image in a first device-dependent color space handled by the display device into device-independent image data that expresses the image in a device-independent color space. The second conversion process converts the device-independent image data into second device-dependent image data as the output data that expresses the image in a second device-dependent color space handled by the output device. The color space converter initiates the first conversion process prior to an input of an instruction to execute output by the output execution instruction input unit. The color space converter initiates the second conversion process in response to the input of an instruction to execute output by the output execution instruction unit. | 06-25-2009 |
20090168128 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM TO EXECUTE THE IMAGE PROCESSING METHOD - An image processing apparatus includes a sensor unit configured to include a plurality of line sensors to read image data having a plurality of channels; a correcting unit configured to correct the image data read by the sensor unit to obtain a plurality of frames of image data in which reading positions on an original image by adjacent line sensors among the plurality of line sensors are shifted by less than a pixel in a main scanning direction or/and a sub-scanning direction; and a high-resolution converting unit configured to perform interpolation by using the plurality of frames of image data obtained by the correcting unit so as to obtain monochrome image data having resolution higher than resolution of the line sensors. | 07-02-2009 |
20090180164 | Image processing device, image processing method, image forming apparatus, and storage medium - A device for converting a color image including multiple character images into a monochrome image is disclosed. The device includes a color conversion unit configured to reduce the image density of black character images included in the color image to a level lower than the image density of specific color character images included in the color image and having a specific color other than black during the conversion of the color image into the monochrome image. | 07-16-2009 |
20090190194 | Color Correction Method for an Imaging System - A method for correcting color shift in an imaging system, including an imaging object, and a standard color conversion lookup table associated with the imaging object, includes measuring a plurality of test patches to obtain color data associated with the imaging object. A signature color data lookup table is generated, based on the color data, and is combined with the standard color conversion lookup table to generate a composite color conversion lookup table for use with the imaging object. | 07-30-2009 |
20090195845 | Printing control device, print data generation device, printing system and printing control program - A printing control device that specifies to a printing apparatus a coloring material volume set which is a combination of usage amounts of coloring materials when the printing apparatus executes printing by depositing a plurality of coloring materials onto a recording medium, including: a print data acquisition unit that acquires print data of pixels having an information area for storing an index associated with the coloring material volume set; a color conversion unit that acquires the coloring material volume set corresponding to the index stored in the pixel; and a printing control unit that executes printing by specifying to the printing apparatus the coloring material volume set acquired by the color conversion unit. | 08-06-2009 |
20090231644 | Calibration System, Calibrating Method, and Correction Processing Program - In a calibration system for conducting calibration by using a patch sheet produced on the basis of data to form measurement patches with respective different densities arranged in a predetermined direction and reference patches with a constant density arranged in the vicinity of the measurement patches for each color toner, the calibration system is provided with a correcting section to correct, on the basis of the calorimetric values of the reference patches, the calorimetric values of the measurement patches arranged in the vicinity of the reference patches. | 09-17-2009 |
20090237756 | IMAGE PROCESSING DEVICE AND IMAGE FORMING DEVICE - An image processing device provided with an acquiring unit and a generating unit. The acquiring unit acquires invisible image data of an invisible image subject to forming on a recording medium with invisible coloring material and acquires source image data of a source image subject to forming on the recording medium with visible coloring material. The generating unit generates corrected-image-data of the source image data corrected according to the absorption wavelength characteristics of the invisible coloring material, such that the color of overlapping regions where both the invisible image and the source image are superimposed when formed on the recording medium approximates to the color of regions corresponding to the overlapping regions in the source image. | 09-24-2009 |
20090237757 | IMAGE-PROCESSING SYSTEM - An image-processing system for printing an image based on original image data. The storing unit stores at least one look-up table in association with at least one printing condition. The at least one look-up table is used to convert a color value in original image data into a limited color value that limits a total quantity of ink to be used in printing. The detecting unit detects, as a printing condition, at least one of a type of color material and a type of recording medium which are used for printing operation. The converting unit converts the color value data into the limited color value by using a look-up table that is assigned with a printing condition corresponding to the detected printing condition. | 09-24-2009 |
20090251746 | Method, System and Device for Colour Quality Control - A colour quality control device adapted for use in a system for colour correction of an image to be reproduced on at least one reproduction device that is calibrated by a reproduction forward transform. The system also comprises a colour correction device adapted to correct at least one colour in the image. The colour quality control device comprises a false contour detection unit that uses information from the reproduction forward transform to decide if a contour in the image is a false contour introduced by the transform. This facilitates the operator's work during colour correction. A system and a method are also provided. | 10-08-2009 |
20090251747 | IMAGE FORMING APPARATUS AND COLOR SHIFT CORRECTION METHOD THEREOF - In an image forming apparatus that reads an original and forms an image of the original that has been read, a skew amount of the original is calculated when the original has been read and a shift amount of each color of image data in image formation is obtained from a storage unit. A color shift correction amount for correcting color shift in an output image is calculated based on the calculated skew amount and the stored shift amount of each color, and the color shift is corrected based on that color shift correction amount. | 10-08-2009 |
20090251748 | COLOR MANAGEMENT METHOD, MODULE, AND PROGRAM PRODUCT, AND PRINTER USING SAID METHOD - A color management method, wherein a Graphics Processing Unit (GPU) is used for converting colors from a source device color space to an output device color space in accordance with predetermined color profiles of the source and output devices. The method includes the steps of storing, in the GPU, an at least three-dimensional conversion texture that specifies a color conversion table; loading input color data into the GPU; sampling the conversion texture at a position specified by the input color data, thereby to identify output color data; and outputting the output color data. | 10-08-2009 |
20090279150 | IMAGE FORMING APPARATUS, METHOD OF CONTROLLING SAME, AND STORAGE MEDIUM - If an image is shifted in increments of pixels according to scan line changing points, the printed image suffers from jaggies or boundaries at positions corresponding to the scan line changing points. The jaggies or boundaries are also produced when a ½ speed or a ⅓ speed obtained by varying the process speed is used. Consequently, it has been impossible to obtain high-quality output images. An image forming apparatus is offered which has a printing unit operating to print at different process speeds and a control unit for controlling the output range of output image data for each line according to the process speeds. When the process speed in use is lower than a normal process speed, a part of 1 line of image data is outputted divisionally at timings at which lines from which image is not usually outputted at this low process speed are scanned. | 11-12-2009 |
20090284812 | PROFILE CREATION METHOD AND PROFILE CREATION APPARATUS - A profile creation apparatus determines whether a medium used for printing contains a fluorescent brightener, based on measured values of the medium, corrects measured values of color patches formed on the medium, based on a result of the determination, and creates a color profile based on the corrected measured values of the color patches and measured values of a viewing environment in which color patches have been formed. | 11-19-2009 |
20090296173 | Method to create spot colors with white and CMYK toner and achieve color consistency - A system and method for achieving process spot color consistency using white and CMYK toners is disclosed. The present application employs traditional CMYK using the automated spot color editing approach and enhances this approach by applying a white toner to the printing substrate prior to applying the color. This new and novel method will improve the color printing technology for printing or alternately, applying the application of the white as a distinct separation layer for the color toner separations, on plastics, ceramics, woods, and other such non-paper materials. | 12-03-2009 |
20090296174 | IMAGE FORMING APPARATUS AND DENSITY CORRECTING METHOD - An image forming apparatus, comprises: a plurality of color image forming units each forming an image for correction for each different color on a different paper to output a correction chart; an operation unit for accepting an input of density correction instruction information corresponding to each of the plurality of color image forming units based on the correction chart; a control unit for setting color of the image for correction according to the density correction instruction information input by the operation unit, generating the image for correction for the set color, and causing the image for correction to be formed on the paper by the color image forming unit in order to output the correction chart; and a density unevenness correction unit for correcting density unevenness of each pixel in a main scanning direction for each of the plurality of color image forming units based on the density correction unevenness information input by the operation unit. | 12-03-2009 |
20090323143 | Print Control Device and Print Control Program - A print control device that controls a printing process using registered color conversion information includes: a generating unit that, when a user edits the registered color conversion information, adds access authority information indicating that the color conversion information is user color conversion information used by only a predetermined user or common color conversion information that can be used by all users to the color conversion information to generate new edited color conversion information; and a registration unit that determines whether the edited color conversion information generated by the generating unit can be registered and whether the edited color conversion information is registered as the user color conversion information or the common color conversion information, on the basis of the access authority information and the registration state of the color conversion information, and registers the edited color conversion information on the basis of the determination result. | 12-31-2009 |
20100033777 | COLOR CONVERSION DEVICE - A color conversion device includes a profile storage unit, a saturation determining unit, a first selecting unit, and a conversion unit. The profile storage unit stores a plurality of profiles, each profile indicating correspondence relationships between input color signals representing values in an input color space defined in an input-side device and output color signals representing values in an output color space defined in an output-side device. The saturation determining unit is configured to determine a saturation of pixel data in input image data, the input image data being represented by input color signals and including a plurality of regions, each region containing at least one set of pixel data. The first selecting unit is configured to select, for each region, one profile among the plurality of profiles as an active profile based on the saturation of the at least one set of pixel data that is contained in the each region. The conversion unit that converts the input image data into print data represented by output color signals, by converting each set of pixel data based on the active profile that is selected for a region that contains the each set of pixel data. | 02-11-2010 |
20100033778 | IMAGE PROCESSING APPARATUS AND METHOD THEREFOR - When color materials of more than four colors are used, a signal for the amount of toner used within a range appropriate for the apparatus and toner characteristic is generated using a color separation table. However, a printer receives print data of various formats, such as image data separated into signal values of more than four colors, or image data of a special format to which a six-color separation table cannot be applied. Hence, an image signal representing a combination of colors is input. The sum of the signal values of colors in each pixel of the image signal is calculated and compared with a limit value. When the sum exceeds the limit value, the signal values of base colors are replaced with that of a spot color based on a replacement table for replacing the signal values of the base colors with that of the spot color. | 02-11-2010 |
20100039683 | SCANNING METHOD AND AUXILIARY APPARATUS OF AUTO-EXECUTING APPENDING SCANNING FUNCTION - A scanning method and an auxiliary apparatus of auto-executing appended scanning function are disclosed. A specific image, which can be identified by a scanning module of a scanning device, is first loaded on a scanned document or a scanned document carrier, and an appended function denoted by the specific image is predetermined in a processing module of the scanning device. Then, as the scanning device scans the scanned document or the scanned document carrier with the specific image, the scanning device automatically executes the predetermined appended scanning function or processing function according to the scan data of the specific image. The invention can be applied to all kinds of portable scanning device, and especially can be applied to small-sized portable scanning devices for scanning photos, name cards, and so on to realize the direct display and connection with a display device or a storage device. | 02-18-2010 |
20100053708 | PRINTING APPARATUS, PRINTING SYSTEM, AND PRINTING METHOD - A printing apparatus having a print unit and a print controller with a first density correcting component performing a density correction to image data transmitted to the unit is provided. The correction accords with a printing capacity of the unit. The apparatus comprises a component notifying a separate apparatus of an order to make a second density correcting component perform a density correction an amount of which is the same as that of the density correction by the first correcting component. The separate apparatus is provided with a transmitter and the second correcting component, the transmitter being capable of transmitting image data to the unit bypassing the first correcting component provided in the controller, and the second correcting component being capable of performing a density correction to the image data. The correction accords with the printing capacity of the unit. | 03-04-2010 |
20100053709 | IMAGE PROCESSING APPARATUS, IMAGE FORMING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER-READABLE STORAGE MEDIUM CONTAINING IMAGE PROCESSING PROGRAM - An image processing apparatus of the present invention includes a color matching section for performing, on monochrome or two-color image data to be supplied to an image display device, a color matching process of reducing differences in color from a single- or two-color image to be outputted by an image display device, and as such, can display a comfortable preview of a single- or two-color image data by reducing differences in color between an image to be previewed and an image to be actually printed. | 03-04-2010 |
20100073743 | IMAGE FORMING APPARATUS AND COMPUTER READABLE MEDIUM FOR IMAGE FORMING - An image forming apparatus includes a classifying unit which classifies constituent elements constituting print data into a single or a plurality of areas based on a plurality of types of the constituent elements; a color conversion processing unit which performs, with respect to each of the constituent elements classified by the classifying unit, a color conversion coping with each type the constituent elements; and an image forming unit which composes the constituent elements subjected to the color conversion by the color conversion processing unit and forms an image based on the print data composed | 03-25-2010 |
20100085617 | Image Processing Apparatus and Image Recording Medium - An image processing apparatus that performs processing for converting image data of an original document into data for an output apparatus is provided. The image processing apparatus includes: a correcting unit that applies a change to the image data so as to ensure that a color that is located in a region in a color space that represents color values of an image is outputted in one color of a recording material; and a corrected data outputting unit that outputs the image data corrected by the correcting unit. The region is defined by excluding a second region from a first region. The first region is a region that includes each color value obtained as a result of reading a sample by means of the reading apparatus. The second region is a region in which a color that should not be outputted as the one color is located. | 04-08-2010 |
20100091348 | IMAGE PROCESSING APPARATUS - An image processing apparatus includes a major color range detector detecting the major color range from the image data; a criteria density setting unit determining a density value where the largest number of pixels exists in a density histogram of the major color range as a criteria density; a first correction value derivation unit deriving a first correction value to change density values in a predetermined range higher than the criteria density to be closer to the criteria density; a second correction value derivation unit deriving a second correction value to change density values in a predetermined range lower than the criteria density to be closer to the criteria density; a correction table derivation unit deriving a gradation correction table based on the first correction value and the second correction value; and a correcting unit correcting density of the scanned image data based on the gradation correction table. | 04-15-2010 |
20100110512 | IMAGE FORMING APPARATUS AND METHOD OF COMPENSATING COLOR THEREOF - A method of color compensation of an image forming apparatus includes measuring a density value of a pattern formed using auto color registration, determining whether to perform color compensation using the measured density value, and changing the Color Management System (CMS) preset in the image forming apparatus to a new CMS profile if color compensation is required. Accordingly, a CMS table can be updated quickly and conveniently according to the changed density information. | 05-06-2010 |
20100123942 | ESTABLISHING ONE-DIMENSIONAL TRANSFORMS - One-dimensional color transforms are automatically calculated by identifying at least one device-independent color space curve, at least one device-dependent color space curve and at least one association amongst the curves. Depending on the motivation for creating the one-dimensional transform, different curves, associations and calculations can be used to generate the transforms without obtaining additional device measurements or iteratively adjusting transform values. | 05-20-2010 |
20100157397 | LINEAR PROCESSING IN COLOR CONVERSION - Methods and systems herein provide for color conversion of image data to another color space, such as that of a printer. Such color conversion includes linearly processing the color conversions when using radial basis functions for the conversions. One color conversion system herein includes a modeling module operable to generate a numerical model according to a radial basis function for converting the color values in the image data to the color space. The numerical model includes error approximations operable to form the radial basis function into a linear process. The system also includes a color converter operable to convert the color values in the image data to the color space based on the numerical model. | 06-24-2010 |
20100177366 | METHOD, APPARATUS AND SYSTEM FOR MATCHING COLOR GAMUTS OF MULTIPLE IMAGE TRANSFER DEVICES - A method for adjusting the gamuts of a set of printers to match the gamuts across a population of printers using mass targets. The method involves printing color patches suitably positioned in the color gamut with CMYK separations and simultaneously actuating DMA targets to the level 2 controls of the printers using closed loop control algorithms. An extreme MIMO control algorithm is used to converge to the desired L*a*b* targets by adjusting mass targets to the printing system in an iterative fashion to maximize the common intersection gamut across the printers. | 07-15-2010 |
20100177367 | IMAGE FORMING APPARATUS - An image forming apparatus includes a chart data generating unit that generates density adjustment chart data; a printing unit that prints a density adjustment chart where the reference patterns and the adjustment patterns of each pattern are juxtaposed, based on the density adjustment chart data; a receiving unit that receives the input of a density adjustment value of an arbitrary pattern; a gradation correcting unit that corrects gradation of the arbitrary pattern based on the density adjustment value of the arbitrary pattern that is received by the receiving unit; and a reconstructing unit that reconstructs density adjustment chart data used to juxtapose and print the reference patterns and density-corrected adjustment patterns for only pattern data of the patterns where the receiving unit receives the density adjustment value. | 07-15-2010 |
20100182660 | CORRECTION OF WHITE BALANCE DEVIATION IN A CAPTURED IMAGE - A method is provided for correcting an image. At least some pixels in a captured image are scanned and there is selected each scanned pixel having at least one associated light intensity value greater than an intensity threshold value based on a comparison between the light intensity values for color indicators associated with the scanned pixel. Three correction information items are obtained by summing the light intensity values associated with the pixels selected by color indicator, and a correction of the white balance deviation affecting the captured image is determined based on the correction information items. A pixel is selected if both the difference between a mean light intensity value and a lowest light intensity value associated with the scanned pixel and the difference between a highest light intensity value and the mean light intensity value associated with the scanned pixel are less than a difference threshold value. | 07-22-2010 |
20100259802 | CMYK TO CMYKKpRGB TRANSFORM FOR HALFTONE DOT OVERLAP CONTROL - What is disclosed is a novel system and method for performing a CMYK to CMYKK | 10-14-2010 |
20100271673 | IMAGE PROCESSING DEVICE, IMAGE FORMING APPARATUS AND IMAGE PROCESSING METHOD - Disclosed is an image processing device comprising: a storage part to store a target value set for each tone value in a plurality of colors; a measurement value information obtaining part to obtain measurement value information, the measurement value information comprising a measurement value of a density at each of a plurality of measurement positions in a main and a sub-scanning directions; a correction target value calculation part to correct the target value based on color mixture proportion information where a proportion of the colors is set, and to calculate a correction target value; a correction value calculation part to calculate a correction value of the density at each measurement position, which is calculated based on the correction target value and the measurement value information; and a correction part to correct a density value of each pixel in image data, based on the correction value. | 10-28-2010 |
20100321747 | IMAGE PROCESSING APPARATUS, IMAGE FORMING SYSTEM, IMAGE PROCESSING METHOD AND COMPUTER READABLE MEDIUM - The image processing apparatus includes: a color conversion unit color-converting an image signal of a first color space into that of a second color space by using a color conversion characteristic defining a correspondence relationship between the image signals of the first and second color spaces; an adjustment unit adjusting the image signal of the second color space, in accordance with a change in the color conversion characteristic; a correction unit correcting a conversion factor group for adjustment used when the image signal of the second color space is adjusted; and a judgment unit judging whether the conversion factor group needs to be corrected, on the basis of a color measurement result of a second color sample group including color samples the number of which is smaller than that of color samples in a first color sample group on which color measurement is performed to create the conversion factor group. | 12-23-2010 |
20110007372 | IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, IMAGE INFORMATION CORRECTION METHOD AND COMPUTER READABLE MEDIUM - An image reading apparatus includes: a light source that generates light by synthesizing light from different illuminants, and irradiates an irradiated object with the light; a reading unit that reads light irradiated by the light source and reflected by the irradiated object and generates image information on the irradiated object; a correction amount setting unit that acquires from the reading unit the image information generated by using, as the irradiated object, a color sample formed in a color of light emitted by any one of the illuminants generating the light of the light source, and that sets, according to the acquired image information, a correction amount to correct the image information on the irradiated object generated by the reading unit; and a correction unit that corrects the image information on the irradiated object generated by the reading unit, by using the correction amount set by the correction amount setting unit. | 01-13-2011 |
20110013241 | IMAGE READING APPARATUS AND IMAGE READING METHOD - An image reading apparatus includes: a read unit; an output unit; a determination unit that obtains a difference between the light values of the pixels sequentially outputted, the pixels being first pixel and second pixel arranged in first line and second line, respectively, at positions shifted from each other in the second scan direction, and that determines whether the difference exceeds a first threshold; a correction unit that corrects a chroma value of an adjacent pixel next to the first pixel when the difference exceeds the first threshold and when a predetermined condition is satisfied; and a position grasp unit that grasps the position of the first pixel whose lightness value and chroma value are outputted by the output unit. The determination unit performs at least any one of change of the first threshold and change of the second line when the position falls within a predetermined area. | 01-20-2011 |
20110051206 | CORRECTING COLOR BASED ON AUTOMATICALLY DETERMINED MEDIA - A method for automatically applying color transforms to scanned input images from a digital color image scanner, wherein the input images may be on a variety of different imaging media is disclosed and comprised of: scanning a front side of an input image forming an image scan, scanning a back side of the input image forming a back scan, analyzing the image scan or the back scan to determine the imaging medium for the scanned input image, selecting a color transform associated with the determined imaging medium and applying the color transform to the image scan to produce a corrected image scan. | 03-03-2011 |
20110051207 | Gamut Clipping with Preprocessing - A method is provided for gamut clipping with preprocessing enabled as software instructions stored in a computer-readable medium and executable by a processor. The instructions provide a color in a color space defined by at least three attributes. If the color lies outside a gamut boundary in the first color space, a distance is measured from the color to the gamut boundary. In response to the measured distance, a weight is calculated for an attribute of the color. Then, it is determined if the attribute of the color is to be shifted. If so, an attribute shift amount is derived. The attribute shift amount of the color is modified by applying the weighting. The attribute of the first color is shifted by the weighted attribute shift amount, creating a post-processed color. The post-processed color is then clipped. | 03-03-2011 |
20110051208 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM STORING IMAGE PROCESSING PROGRAM - An image processing apparatus is disclosed. The image processing apparatus includes a color conversion processing unit which obtains CMY data from input color space coordinate data of image data, and an output data generating unit which generates output data by forming CMYK data by using a result output from a color conversion processing section. The color conversion processing section includes an optimum color reproduction data structure which gives the CMY data for obtaining a full color image optimally reproduced from the input color space coordinate data, and a color material using amount reducing data structure for outputting the input color space coordinate data by reducing the color material using amount with the use of a reference value in which the color material using amount is increased for a hue of an output image giving a high psychological effect and is decreased for a hue of the output image giving a low psychological effect. | 03-03-2011 |
20110058238 | SPOT COLOR PRESS EMULATION COLOR TRANSFORMATION METHOD AND SYSTEM - A spot color rendering system and method that incorporates spot color press emulation color transformation to preserve spot color on a target rendering device. A spot color rendering option implemented in a graphical user interface can be selected in order to render the spot color via an intermediate emulation space. The spot color name calls can be first associated with a color value in an ICC profile connection space (PCS), as CIE L*a*b* or XYZ. A database relation of the spot color name with its associated PCS numerical value enables association of the name with the resultant color transformed output. Thereafter, a color transformation with respect to the spot color value can be performed in order to compute a color on an emulation press and then the color can be preserved to the target rendering device. Such an approach enables a color consistent rendering to the target rendering device similar to that of the emulation press. | 03-10-2011 |
20110063698 | MEMBRANE-BASED METHODS AND SYSTEM FOR COLOR CHARACTERIZATION - Methods and systems are presented for characterizing a printer, display or other color reproduction device in which a forward color transform having a parametric surface forward color transform and a nonparametric residual forward color transform is updated by adapting the parametric surface forward color transform using an input adaptation data set and a measured adaptation data set, generating a prediction data set in the second color space using the adapted parametric surface forward color transform and the nonparametric residual forward color transform, generating a prediction error data set in the second color space using the input adaptation data set and the prediction data set, generating a membrane forward color transform using the prediction error data set, and updating the forward color transform using the adapted parametric and nonparametric forward color transforms. | 03-17-2011 |
20110085218 | VECTOR ERROR DIFFUSION WITH EDGE CONTROL - A mechanism for providing edge enhancement or attenuation in a vector error diffusion process includes warping a marking decision color space as a function of at least one pixel value of a target pixel. The warping changes the membership of sets of error modified pixel values associated particular sets of marking. The warping is controlled by a function of pixel values of a target pixel from an input image. Therefore, the warping is constant for uniform portions of the image. Since pixel values change at edges or where colors change, a mechanism is provided for the presence of edges to influence the vector error diffusion process. Selection of the function by which the marking decision color space is warped provides a means for controlling the aggressiveness of the edge enhancement or attenuation. Equivalent processing includes warping or adjusting error modified pixel values according to corresponding functions. | 04-14-2011 |
20110090548 | REDUCING NOISE INDUCED BY COLOR MIXING SPOT COLOR RECIPE SEARCH - What is disclosed is a novel system and method to reduce noise induced by color mixing in a color management system. At least one device color recipe is obtained for a target spot color. The recipe is defined for a color marking device and defines a range of marking device color values for a target L*a*b color value. Next, a minimal value and a maximum value of each color value in the range of color values for said target L*a*b color value are identified. An iterative process of searching is performed until the printed color test patch produces a visually acceptable smoothness while matching color accuracy. This iterative process includes generating at least one additional new device color recipe from color values within the range of color values. At least one of the new device color recipes is selected and provided to the color marking device for rendering. | 04-21-2011 |
20110102869 | IMAGE PROCESSING APPARATUS, IMAGE FORMING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM ON WHICH IMAGE PROCESSING PROGRAM IS RECORDED - A two color process section included in the image processing apparatus includes a luminance and chroma calculation section, an image-data determination section, and an output-color generation section. The luminance and chroma calculation section calculates a luminance value and a chroma value based on input image data. The image-data determination section determines the input image data, the chroma value of which is equal to or greater than a predetermined threshold, as first input image data constituting a chromatic color in a two-color image and determines the input image data, the chroma value of which is less than the threshold, as second input image data constituting an achromatic color in the two-color image. The output-color generation section generates image data of CMY from the first input image data based on the chroma value and the luminance value and generates image data of CMY from the second input image data based on the luminance value. | 05-05-2011 |
20110122466 | IMAGE READING APPARATUS, IMAGE DATA OUTPUT PROCESSING APPARATUS, AND IMAGE READING METHOD - Image data R | 05-26-2011 |
20110128599 | IMAGE FORMING APPARATUS PROVIDED WITH A COLOR MISREGISTRATION CORRECTION PROCESSING UNIT - An image forming apparatus having a temperature detection unit that detects a current interior temperature based on a detection signal from a temperature sensor. A temperature change detection unit calculates a difference between the current interior temperature and an interior temperature detected in a last color misregistration correction processing as a temperature change amount. When the temperature change amount is equal to or higher than a threshold, a determination unit determines that a color misregistration correction operation needs to be executed. A mode setting unit determines whether a monochrome printing processing is currently carried out. When the monochrome printing processing is currently carried out, the mode setting unit sets an estimation color misregistration correction mode as a color misregistration correction mode, and an estimation color misregistration correction processing unit executes an estimation color misregistration correction processing based on a previously determined color misregistration amount in accordance with the interior temperature. | 06-02-2011 |
20110194162 | IMAGE FORMING APPARATUS, IMAGE FORMATION CONTROL APPARATUS, AND COMPUTER READABLE MEDIUM STORING PROGRAM - An image forming apparatus includes an obtaining unit, an image forming section, and a controller. The obtaining unit obtains color signals containing color components the number of which is n, n being a natural number. The image forming section forms an image on a medium, the image being based on the color signals obtained by the obtaining unit. The controller performs control so that colors in a color gamut that is not reproduced if area coverage modulation, not density modulation, is used for expression are included in the image by expressing densities of the n color components contained in the color signals obtained by the obtaining unit by using density modulation and area coverage modulation. | 08-11-2011 |
20110216381 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - Disclosed is an image forming apparatus including a color converter for converting cyan, magenta and yellow components of a first image signal to equivalent neutral density, calculating a first gray component from cyan, magenta and yellow components of equivalent neutral density, subtracting the first gray component from each of the cyan, magenta and yellow components of equivalent neutral density, subjecting each of the cyan, magenta and yellow components of equivalent neutral density from which the first gray component is subtracted to an inverse conversion of the equivalent neutral density conversion, and outputting a second image signal comprising cyan, magenta and yellow components which are obtained by carrying out the inverse conversion to the cyan, magenta and yellow components of equivalent neutral density from which the first gray component is subtracted, the first black component and the first gray component; an image forming section for forming an image on a paper based on the second image signal by using cyan, magenta, yellow, black and gray toners; and a controller for controlling the color converter and the image forming section. | 09-08-2011 |
20110222134 | DOCUMENT IMAGE PROCESSING SYSTEM, DOCUMENT IMAGE PROCESSING METHOD, AND COMPUTER READABLE STORAGE MEDIUM STORING INSTRUCTIONS OF A COMPUTER PROGRAM THEREOF - A document image processing system includes an extraction portion, a presumption portion, a calculation portion, a substitution portion, and a generation portion. The extraction portion extracts first and second document elements of an inputted document image and a preprint data. The presumption portion presumes first and second representative colors due to first and second document elements in a color space, respectively. The calculation portion calculates first and second planes to separate the color space into first and second sub-spaces which each includes each of the first and second representative colors, respectively. The substitution portion substitutes a color of a first pixel of the first document elements with the first representative color and a color of a second pixel of the second document elements with the second representative color. The generation portion subtracts each of the substituted first pixel from each of the substituted second pixel to generate a difference image. | 09-15-2011 |
20110228363 | IMAGE PROCESSING APPARATUS, CONTROL METHOD, AND COMPUTER-READABLE MEDIUM - An image processing apparatus which converts input image data into a designated color, the apparatus comprises a designation unit which accepts a designated color from a user; a holding unit which holds a representation color of a block, a color layout of pixels included in the block, and an other color contained in the block except for the representation color, the block being generated by compression and including a predetermined number of pixels that form the image data; and a color conversion unit which mono-colorizes the block into the designated color by converting at least one of the representation color and the other color into the designated color designated with the designation unit in accordance with the color layout. | 09-22-2011 |
20110228364 | OPTICAL WRITING CONTROL APPARATUS AND CONTROL METHOD OF OPTICAL WRITING APPARATUS - An optical writing control apparatus controls a light source to draw a correction pattern for correcting a parameter value of an image forming mechanism, detects the correction pattern transferred onto a conveyance member from a photosensitive member based on an output signal of a sensor, and corrects the parameter value based on the detected correction pattern; stores chromatic color progress information indicating a progress for a chromatic color mechanism corresponding to a chromatic color image occurring from when the correction operation was carried out and achromatic color progress information indicating a progress for an achromatic color mechanism corresponding to an achromatic color image occurring from when the correction operation was carried out; and stores a necessary threshold to determine that the correction operation is necessary and an unnecessary threshold to determine that the correction operation is unnecessary for the chromatic color progress information and the achromatic color progress information. | 09-22-2011 |
20110261426 | IMAGE FORMING APPARATUS, CONTROL METHOD THEREFOR, AND COMPUTER PROGRAM - When color data and monochrome data are mixed in a piece of bit map data rasterized from the job data, an image forming apparatus allows a user to set whether to perform pre-color conversion processing on the monochrome data to enable performing color conversion processing on the monochrome data using a color conversion table for color, or whether to disable printing the job data including the bit map data in which color data and monochrome data are mixed. | 10-27-2011 |
20110286061 | SMART MODE COLOR WORKFLOW - A technique for achieving optimal color quality in rendered print jobs using a smart mode color workflow is disclosed. A smart mode color workflow provides for a pre-flight check of a print job to determine the job's relevant color attributes. Only relevant color attributes are displayed for review and selection during color transformation of the print job. All irrelevant color attributes are either grayed-out or not displayed to prevent an inexperienced user from selecting irrelevant color attributes during a color transformation. Providing only relevant color attributes for selection allows a user to become more efficient in achieving optimal color quality in a color transformation for a final rendered document. | 11-24-2011 |
20110286062 | Image processing apparatus, image processing method, and computer program product - An image processing apparatus that generates color-reduced image data containing fewer colors than the number of colors in input image data includes a hue identifying unit that identifies to which hue region of a color space a hue of each pixel in the image data belongs; an output-color correspondence determining unit that determines correspondence between the hue regions and respective output colors of the color-reduced image data; and a color-reduced image data generating unit that converts a color of each pixel in the image data to an output color corresponding to the hue region, wherein the output-color correspondence determining unit associates, as the output colors, colors that are generated by mixing mutually-different color materials that are fewer in number than the output colors, at different mixing ratios with the respective hue regions, the color materials forming a representative color that determines a range of the output colors. | 11-24-2011 |
20110292478 | Image processing apparatus - An image processing apparatus includes: an output unit that outputs a tone-correction-parameter generation sheet and a scanner-profile generation sheet identical in layout of patch columns, each containing patches of different tone values, formed thereon; a scanning unit that scans the patches at scanner positions on a platen; a scanner-profile creating unit that creates, for each of the scanner positions, a scanner profile specifying a relationship between readout values of patches on the scanner-profile generation sheet and color measurement values of the patches measured with a colorimeter; a color-measurement-value deriving unit that determines, from readout values of the patches on the tone-correction-parameter generation sheet and the scanner profiles for the scanner positions, color measurement values of the patches; and a calculating unit that calculates a tone correction parameter for correcting differences between the color measurement values and target color measurement values for the patches on the tone-correction-parameter generation sheet. | 12-01-2011 |
20110299145 | IMAGE PROCESSING METHOD AND IMAGE PROCESSING APPARATUS - An image processing method and image processing apparatus which can execute vector conversion processing by appropriately dividing a clipart image including gradation into regions are provided. To this end, a color document image including a clipart image having an area of gradation is input, the clipart image is selected, and outline information of the clipart image is extracted. The color document image is separated into an achromatic color area and a chromatic color area, which are respectively divided into a plurality of regions. Of the plurality of regions of each of the achromatic color area and the chromatic color area divided in the dividing of region step, regions which meet a set condition are integrated. After that, the clipart image is converted into vector data using a region group after integrating of region and the outline information. | 12-08-2011 |
20110310446 | Image forming apparatus, color adjustment method, and computer program product - An image forming apparatus includes: an image generating unit that reads an original and generates image data; a color-region input unit that inputs a color region subject to color matching in the image data; an object-color calculating unit that calculates an object color to which the color region is matched; a color-adjustment-condition setting unit that sets a plurality of color adjustment conditions on-which output of the object color under an image output condition is within an allowable color difference; a color-conversion-condition changing unit that selects one of the color adjustment conditions on which a color difference occurring in an entire color space is smallest, and that changes a color conversion condition; a color conversion unit that performs color conversion of the image data based on the changed color conversion condition; and an image output unit that outputs the image data subjected to the color conversion. | 12-22-2011 |
20110317232 | IMAGE PROCESSING APPARATUS, CONTROL METHOD, AND COMPUTER-READABLE MEDIUM - An image processing apparatus comprises: an unit configured to compress image data based on values of pixels and a layout of the pixels for each tile including the predetermined number of pixels; an unit configured to calculate a representative value from the values of the pixels included in the tile; an unit configured to determine based on a distribution of the representative values of tiles included in a first area including the first number of tiles whether or not a tile of interest included in the first area is to be corrected; an unit configured to calculate a correction value for the tile of interest based on the representative values of tiles included in a second area including the second number of tiles; and an unit configured to add representative values of the tiles, determination results of the tiles, and the correction value to the image data compressed. | 12-29-2011 |
20120019880 | SCANNER SYSTEM - A scanner system includes: a scanning unit that scans a document and generates scan image data; an image processing unit that performs an image process on first subject image data obtained from the scan image data to generate processed image data in a first case where the image process is instructed to be performed, the image process including: a first kind of image conversion process on the first subject image data using a first input-side color conversion profile; and a color correction process performed after the first kind of color conversion process; and an outputting unit configured to: output the processed image data to an outside in the first case; and output second subject image data obtained from the scan image data without the image process and the first input-side color conversion profile to the outside in a second case where the image process is not instructed to be performed. | 01-26-2012 |
20120033276 | IMAGE FORMING APPARATUS WHICH PERFORMS CALIBRATION FOR MAINTAINING IMAGE QUALITY - A reader unit A reads a pattern image formed on a first printing medium to obtain a first luminance value. A color processing unit converts into a density value using first conversion information. CPU creats an image processing condition LUTa based on the density value. A photo sensor reads a pattern image formed on an image carrier. CPU corrects LUTa based on a density value of the pattern image read by photo sensor. A printer unit forms a pattern image on a second printing medium different using the corrected LUTa. CPU determines second conversion information for the second printing medium based on a second luminance value from the pattern image on the second printing medium, the first luminance value and the first conversion information. | 02-09-2012 |
20120081768 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PRINTER - An image processing apparatus is provided that is capable of very accurately and efficiently reducing uneven color caused by variation in ejection characteristics among nozzles that eject ink and that occurs in a color image that is formed by mixing a plurality of different kinds of ink. A patch is printed by ejected ink from a plurality of nozzles, a region is specified so as to perform color correction in a test color image that is printed on a printing medium, a plurality of different color correction processing is performed on color signals that correspond to a color correction region, a plurality of color correction patches are printed, a color correction patch to be used is selected from among the plurality of different color correction patches and table parameters that correspond to the nozzles are created based on the selected color correction processing. | 04-05-2012 |
20120092734 | IMAGE PROCESSING DEVICE - In the image processing device, the color conversion part converts the input value to an output value by using a color profile. The correction part corrects the output value to a corrected value by using a correction table. The update part updates the correction table based on a density patch. The first and second amount is an estimated amount of the color material to be consumed when corrected image data corrected by either using the updated correction table or using an initial correction table, respectively, is printed. When the amount determining part determines that the first amount is greater than the second amount, the modifying part modifies the color profile such that the output value in the modified color profile specifies a less amount of color material than an amount of color material specified by the output value in the unmodified color profile. | 04-19-2012 |
20120099169 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - An image reading device includes a light source, a light receiving unit, a generation unit, a white reference member, a color reference member, and a processing unit. The light source emits light to a recording medium on which an image is formed. The light receiving unit receives light reflected by the recording medium. The generation unit generates a light intensity value from the light received by the light receiving unit. The white reference member is used for color calibration for a white balance. The color reference member is used for color calibration to calibrate a predetermined color. The processing unit derives a correlation formula representing variation in characteristics of the white reference member, based on a light intensity value generated when light is emitted to the color reference member from the light source. | 04-26-2012 |
20120105927 | COMPENSATING FOR PRINT ENGINE CHANGE IN A DOCUMENT REPRODUCTION DEVICE - What is disclosed is a novel system and method of inheriting intended GCR into a 4-to-4 cascaded LUT to compensate for print engine change which adversely impacts the quality of an output print. The present method uses the device link transform to generate starting LUT nodes for the inverse of the drifted printer model by inputting CMYK or RGB into the device link at a color space resolution sufficient to determine output nodes. Lab and CMYK values are derived from this process, and a “starting LUT” is created at the Lab destination nodes. An iterative control begins with this starting LUT to produce an inverse drifted printer model that contains a close approximation for the intended GCR. The present method captures the intent of the device link transform for a fleet and generates the cascaded LUT for drift, specific printer, side1/side2, and other modes leading to special GCRs. | 05-03-2012 |
20120113489 | SYSTEM FOR MOBILE IMAGE CAPTURE AND PROCESSING OF FINANCIAL DOCUMENTS - An automated document processing system, particularly for mobile image capture and processing of financial documents to enhance images captured on a mobile device with camera capabilities for data extraction. The systems comprise a mobile device that includes a capture device configured to capture color images of documents, and that has a processor for performing certain operations, such as color reduction, and a transmitter for sending an image from the mobile device to a server. The server is configured to optimize and enhance the image, and to apply an improved binarization algorithm using a window within a relevant document field and/or a threshold for the document field. Orientation correction may also be performed at the server by reading the MICR line on a check and comparing a MICR confidence to a threshold. A check image may also be size corrected using features of the MICR line and expected document dimensions. | 05-10-2012 |
20120140298 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image reader that covers an image recorded material placed on a reading surface with an openable cover plate so as to press thereof and optically reads an image of the image recorded material, an image output unit that forms an image on a recording sheet and outputs the image, a detecting unit that detects an opened/closed state of the cover plate when the image output unit forms a gradation test image on the recording sheet, the recording sheet having the gradation test image formed thereon is placed on the reading surface of the image reader, and an operation of reading the gradation test image is performed, and a gradation correction unit that conducts a gradation correction of the image forming apparatus based on an image read by the image reader when the detecting unit detects the closed state of the cover plate. | 06-07-2012 |
20120154879 | DOCUMENT READER - Generation of shading correction data is started before an instruction to start reading of the document is input in a case in which time to generate shading correction data corresponding to a document reading mode is longer than time since the instruction to start reading of the document is received until the document is fed to reach a reading point, and generation of shading correction data is started after an instruction to start reading of the document is input in a case in which time to generate shading correction data corresponding to a document reading mode is shorter than time since the instruction to start reading of the document is received until the document is fed to reach a reading point. | 06-21-2012 |
20120162729 | IMAGE READER, IMAGE FORMING APPARATUS, AND METHOD OF CORRECTING OUTPUT VALUES - Disclosed is an image reader including a first reading unit that reads an image on a front surface of an object placed on a first background member to output a first output value; a second reading unit that reads an image on a back surface of the object placed on a second background member which is different from the first background member to output a second output value; a ground output detecting unit that detects first and second ground output values based on the first and second output values, respectively; a thickness calculating unit that calculates the thickness of the object based on an output ratio between the first ground output value and the second ground output value; and an output correction unit that corrects the first and second output values based on the calculated thickness of the object. | 06-28-2012 |
20120176654 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - An image reading device includes a reading unit, a first correcting unit, and a second correcting unit. The reading unit includes multiple read pixel-arrays and converts a signal charge obtained from pixels in each read pixel-array to an electric signal and outputs the electric signal as a read signal of each read pixel-array. The first correcting unit individually delays the read signals of the respective read pixel-arrays output from the reading unit so as to correct misregistration of the read signals. The second correcting unit corrects the misregistration of the read signals of the respective read pixel-arrays corrected by the first correcting unit by performing a two-point interpolation process so that a correction amount for the read signal of one specific read pixel-array among the multiple read pixel-arrays is not smaller than a correction amount for the read signal or signals of the remaining read pixel-array or pixel-arrays. | 07-12-2012 |
20120307325 | IMAGE SCANNING DEVICE, IMAGE FORMING DEVICE, AND METHOD FOR CORRECTING PIXEL VALUE FOR PIXEL CORRESPONDING TO POSITION OF ROD LENS ARRAY JOINT - An image scanning device has an image sensor including a plurality of arrayed light receiving elements; a light source for shining light upon a scanning object; a lens unit for guiding reflected light from a scanning object to the image sensor and having a plurality of rod lens arrays, in which a plurality of rod lenses are arrayed, joined together; and a correction unit for generating image data based on the output values from the light receiving elements of the image sensor and correcting the pixel values of pixels in the image data corresponding to a position of a joint section between rod lens arrays so that the pixel values become darker. | 12-06-2012 |
20120320437 | IMAGE-READING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER PROGRAM PRODUCT - An image-reading apparatus, includes a variation acquiring unit that acquires a variation of a distance or an angle between a medium to be read and an imaging unit or a light source, and a color shift correcting unit that calculates a color shift between the medium and the imaging unit or the light source based on the variation acquired by the variation acquiring unit and corrects the color shift. | 12-20-2012 |
20130003149 | IMAGE PROCESSING APPARATUS, IMAGE FORMING APPARATUS, IMAGE READING APPARATUS, IMAGE PROCESSING METHOD, AND RECORDING MEDIUM - In a case where a line noise suppression mode in which a line noise image is suppressed is enabled by a mode setting section | 01-03-2013 |
20130070319 | IMAGE READING APPARATUS, IMAGE FORMING APPARATUS AND COMPUTER-READABLE MEDIUM - An image reading apparatus includes a conversion unit and a setting unit. The conversion unit converts first image information into second image information by using a predetermined color conversion factor group. The setting unit (i) obtains the second image information of a color sample of a plurality of colors converted by the conversion unit from the first image information, the first image information generated by reading the color sample, the color sample used to correct a color level difference according to a light source, (ii) selects a color conversion factor group corresponding to the obtained second image information of the color sample based on the correspondence relationship between a color conversion factor group and a color level of the second image information of the color sample, and (iii) sets the selected color conversion factor group instead of the predetermined color conversion factor group of the conversion unit. | 03-21-2013 |
20130235438 | IMAGE READER, IMAGE ERASER, AND RELATED METHODS - According to an embodiment, an image reader for reading an original image formed on a surface of a recording medium is disclosed. The image reader comprises an illumination unit configured to illuminate the surface with a white light source, a light receiving unit comprising a plurality of color image sensors each configured to receive light reflected from the surface to form a monochromatic image, and an image processing synthesis unit configured to process the monochromatic images from the light receiving unit to form a synthesized image. The image reader further comprises an operation unit configured to designate a specific color, and a control unit configured to control the image processing synthesis unit to exclude, from the synthesized image processing, the monochromatic image from the color image sensor that corresponds to the specific color designated in the operation unit. | 09-12-2013 |
20130258428 | IMAGE CORRECTION DEVICE AND METHOD, AND IMAGE READING APPARATUS - An image correction device includes a processor that executes a procedure. The procedure includes: correcting an image of a read object based on images stored in a storage section of a self-illuminated reference chart image of a reference chart of size corresponding to a mounting region where the read object is mounted that has been read in advance in a state illuminated by only a self-illumination light, a uniform light standard color chart image of a standard color chart that has been read in advance in a state illuminated by only uniform light from a predetermined uniform light source, and a uniform light reference chart image of the reference chart that has been read in advance in a state illuminated by only the uniform light, and based on the image of the read object and a peripheral light standard color chart image read by a reading section. | 10-03-2013 |
20130286450 | IMAGE BACKGROUND ENHANCEMENT FOR COLOR IMAGES - A technique is provided for enhancing the background of an original document image. In the case of a black-and-white image, the background color of the original document image is detected, the desired enhanced background color of the original document image is determined from a background pixel value P | 10-31-2013 |
20140029073 | REPAIR OR EDITING OF DAMAGED (TORN) SCANNED HALFTONE PRINTS - When restoring a scanned halftone image of a damaged document, parameters of the halftone structure (geometry) are estimated, as is an intended contone gray level for damaged portions of the image. Locations of halftone cell tiles in the scanned image are determined based on the halftone structure, and a halftone profile model is generated using the estimated halftone parameters and contone information. Image segments are aligned using global features for coarse alignment and halftone structure for fine alignment, such as in cases where the scanned halftone image contains unconnected fragments. Missing parts of the damaged document image are filled in using the halftone profile model and estimated contone values. | 01-30-2014 |
20140029074 | IMAGE READING DEVICE, IMAGE FORMING APPARATUS THEREWITH, AND METHOD OF CONTROLLING AN IMAGE READING DEVICE - An image reading device has a light source section that includes light sources of a plurality of colors and that emits light in one color during a period for reading one line and switches the color of the light source lit cyclically from one line to the next, an image sensor that reads one color per line, a data generation section that generates image data of the light source color which is the color of the light source lit during reading, a memory that stores a plurality of lines' worth of the image data, and a remaining color component generation section that determines the pixel value of a color component other than the light source color based on the pixel values of pixels around a pixel of interest. | 01-30-2014 |
20140055829 | IMAGE FORMING APPARATUS - Disclosed is an image forming apparatus including an image forming unit which forms a toner image on an image carrier and transfers the formed toner image on a paper, a color conversion process unit to carry out a color conversion process to convert inputted image data to image data of an output color in the image forming unit, a paper type information obtaining unit to obtain at least one or more information among a size of a paper, a basis weight of the paper and whether the paper is coated or not and a control unit to control so as to change a maximum adhesion amount of a toner to a paper by selecting a color conversion process condition for the color conversion process unit based on the information obtained by the paper type information obtaining unit. | 02-27-2014 |
20140204435 | IMAGE FORMATION APPARATUS - An image formation apparatus, for forming an image using color developers and a transparent developer, includes: a color developer threshold memory unit configured to store a color developer maximum threshold for each point of interest; a transparent developer threshold memory unit configured to store a transparent developer threshold for each point of interest; and an image signal converter configured to make color correction of the color developers in received image data when the image data contains a portion where a total amount of the color developers exceeds a color developer maximum threshold, and issue an instruction to apply the transparent toner to a portion where the total amount is not more than the transparent developer threshold. | 07-24-2014 |
20140211285 | TO ENABLE MODIFICATION OF COLOR CHARACTERISTICS OF AN IMAGE - A method to enable modification of color characteristics of an image. In the method, an image, defined in a first color space, is transformed to a second color space; and display of the transformed image is controlled. A color characteristic of the transformed image is modified using a rule defined in the second color space in response to a user input, and display of the modified transformed image is controlled. | 07-31-2014 |
20150029564 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - A image forming apparatus includes a color conversion unit, a toner-level-specifying unit and a color-conversion-properties-setting unit. The color conversion unit executes a color conversion process for converting input image data to image data for each color of a plurality of color toners. The toner-level-specifying unit specifies the levels of the plurality of color toners. The color-conversion-properties-setting unit causes adjusted input/output properties to be set in the color conversion unit as input/output properties for the color conversion process when the input image data has a saturation that is less than a predetermined value, the adjusted input/output properties being such that the amount used of the color toner having the lowest level is less than in predetermined standard input/output properties. | 01-29-2015 |
20150055201 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - Because the spectral characteristics of an original of a printing sheet and those of an original of a photographic image are different, in the case where the same color conversion table is applied at the time of color conversion processing, a deviation occurs in color reproducibility. By determining a sheet type with accuracy based on the feature of fiber that occurs in manufacture of paper and by applying color conversion processing in accordance with the determination result, a highly accurate color reproduction method of an image is implemented. | 02-26-2015 |
20160037008 | Scanning Apparatus and Computer-Readable Medium Storing Program Therefor - A scanning apparatus is controlled to extract edges of an original document from an image scanned by a scanning device, execute an end obtaining process which causes the scanning apparatus to obtain a leading end of the original document and a trailing end of the original document based on the edges extracted in the extraction process, an inclination obtaining process to obtain a first inclination of the leading end and a second inclination of the trailing end, and a determination process to determine that a rotational skew has occurred when a difference between the first inclination and the second inclination is greater than a rotational skew threshold, the rotational skew being a change of inclination of the original document during conveyance of the original document. | 02-04-2016 |
20160080583 | Image Reading Device And Correction Method For Image Reading Device - An image forming apparatus | 03-17-2016 |
20160191748 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND STORAGE MEDIUM - An image forming apparatus includes a printing unit configured to print a chart in which patterns, each including an image object in a first process color and an image object in a second process color, are arranged at each of at least three positions in a main scanning direction, a receiving unit configured to receive, from a user, a plurality of pieces of information relating to correction of a color shift between the first process color and the second process color, the plurality of pieces of information being based on the patterns arranged in the printed chart and each corresponding to a different one of the at least three positions, and a correction unit configured to correct the color shift between the first process color and the second process color based on the received plurality of information. | 06-30-2016 |
20190149697 | IMAGE DATA INTERPOLATION | 05-16-2019 |