| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 358300210 | Adaptive multi-level image reproduction | 15 |
| 20090086275 | PROCESSING A DIGITAL IMAGE OF CONTENT - Systems, methods and processes for processing a digital image of content to generate an on-demand print ready document are presented. An obtained digital image of content includes a plurality of image pages. To process the digital image, for each image page in the digital image, the following steps are performed. Each image page is oriented such that a content bounding box of the image page is aligned with a desired page orientation. Boundary and content areas are identified for each image page, wherein the boundary area and the content area are separated by the content bounding box. Artifacts are removed from within the boundary area based on a set of first criteria. Artifacts are removed from within the content area based on a set of second criteria. The plurality of image pages are assembled in order of a desired sequence and an on-demand print ready document is generated with the plurality of assembled image pages. | 04-02-2009 |
| 20090103141 | Method for Adaptively Screening Continuous Tone Originals - The invention relates to printing, to facsimile and publishing techniques, in particular to picture reproducing systems capable to form two optical parameter levels, only. Said invention makes it possible to increase a fine detail reproduction accuracy, in particular, strokes on a screen copy and to more fully use a printing resolution power. The inventive method consists in converting a continuous tone original represented by multilevel reflection values of the areas thereof into a screen copy consisting of dark and light elements by using two types of weight values of the copy elements, wherein the first weight values are distributed between the elements in a sequence independent of the tone modification behavior through the original areas, and in the second sequence according to the geometry of the fine details thereof, in forming the copy elements in such a way that they are dark or light according to results of comparison between the reflection values of the original areas and the weight values of the first and second types, in increasing the degree of use of the second weight values for the fine strokes of the original with respect to the use thereof for single interfaces, which divide the original into dark and light regions and in removing elements which are established in a dark form according to the first weight values inside the light strokes arranged on a dark background. | 04-23-2009 |
| 20100060939 | METHOD OF PRODUCING IMPROVED LENTICULAR IMAGES - An image comprising a plurality of interlaced images is provided, and the image is halftone processed according to one or more processes. The image is halftone processed according to a predetermined function depending at least in part on a gray scale level for a given pixel and on gray scale levels for local pixels nearby the given pixel. The predetermined function can operate on a continuous tone version or on a printed-dot model of the image. Alternatively, the predetermined function may include a predetermined error filter where error which is distributed to pixels corresponding to the same interlaced image from which the error accumulates. The image may be post-processed to arrange dots and/or shift columns of pixels to minimize overlap error. The image may be modified to include extra pixels to align the interlaced images under the lenses. | 03-11-2010 |
| 20100177357 | PRINTING APPARATUS, METHOD FOR CREATING LOOKUP TABLE, LOOKUP TABLE, PRINTING METHOD, AND PRINTED MATTER - A printing apparatus for performing printing with the use of a special gloss material and a coloring material is provided. The printing apparatus includes: an inputting unit that receives or acquires image data as an input; and a printing unit that controls the arrangement of the special gloss material and the coloring material on a print target medium on the basis of the inputted image data to print the image data. The printing unit changes the amount of use of the special gloss material depending on an index value that is related to the lightness of a color represented by the coloring material. | 07-15-2010 |
| 20100309525 | IMAGE FORMING APPARATUS - An image forming apparatus includes: an image bearing member; an image forming unit configured to form a toner image on the image bearing member based on an image input signal; a detection sensor configured to detect a detection image at multiple density levels, which is formed by the image forming unit; a correction unit configured to correct image output characteristics of the image forming unit with respect to the image input signal, based on a detection result of the detection sensor; and a change unit configured to change the density levels at which the detection image is formed so that the detection image is preferentially formed in a density area of a large absolute value of a rate of change of slope of the image output characteristics. | 12-09-2010 |
| 20110141529 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND STORAGE MEDIUM - An image processing apparatus connected via a network to a plurality of image forming apparatuses that implement a first gradation correction, or a second gradation correction, for instructing the connected plurality of image forming apparatuses to implement gradation corrections. The image processing apparatus includes a selection unit configured to select the first gradation correction or second gradation correction, for each of the connected plurality of image forming apparatuses, an instruction unit configured to send an instruction to an image forming apparatus connected via the network for which a first gradation correction has been selected by the selection unit, a reading unit arranged in a reading section by a user, configured to read out patch patterns that have been printed by the image forming apparatus connected via the network, for which the second gradation correction has been selected, and a transmission unit configured to transmit data for correcting readout values of the patch patterns to the image forming apparatus connected via the network, for which the second gradation correction has been selected. | 06-16-2011 |
| 20120274986 | Image Forming Apparatus and Gradation Correction Method - Image forming apparatus ( | 11-01-2012 |
| 20140233070 | COLOR CONVERSION COEFFICIENT GENERATING APPARATUS AND METHOD, COLOR PROCESSING APPARATUS, AND NON-TRANSITORY COMPUTER READABLE MEDIUM - A color conversion coefficient generating apparatus includes a color vision degree coefficient calculating unit and a color conversion coefficient calculating unit. The color vision degree coefficient calculating unit calculates a color vision degree coefficient indicating the degree of color vision deficiency. The color conversion coefficient calculating unit calculates a color conversion coefficient used to convert an input color value, on the basis of correspondence between the color vision degree coefficient, calculated by the color vision degree coefficient calculating unit, and sensitivity characteristics of long—(L), medium—(M), and short—(S) wavelength-sensitive cones. | 08-21-2014 |
| 20150085322 | Image Forming Apparatus That Prints Out Multi-Gradation Monochrome Image Maintaining Gradation Reproducibility, and Image Forming Method - The image forming apparatus includes an input luminance range recognition unit, an output luminance range recognition unit, and a luminance range expansion unit. The input luminance range recognition acquires input luminance information from multi-gradation monochrome image data, generates a luminance histogram, and determines, based on a minimum luminance value and a maximum luminance value of the luminance histogram, an input luminance range. The output luminance range recognition unit determines an output luminance range. The luminance range expansion unit performs a mapping process for mapping input luminance information of pixels within the image range into the output luminance range, and expands the input luminance range to a maximum luminance range. | 03-26-2015 |
| 20160004941 | METHOD FOR CALCULATING SUBSTITUTION COLORS FOR SPOT COLORS - A method for calculating substitution colors for spot colors by using a computer for computer-aided color control of a four-color printing process in a printing machine includes creating a set of characterization data, which describe the relationship between tonal values of the process colors CMYK used and resultant printed color values, by using the computer, adapting to the printing process and interpolating the set of characterization data by using the computer and calculating the substitution colors including or formed of two chromatic and an achromatic color from the adapted and interpolated characterization data with a basic condition by using the computer. The calculated substitution colors are used in the computer-aided color control of the four-color printing process to process a current print job. | 01-07-2016 |
| 358300220 | Variable threshold determined by image or other condition (e.g., adaptive thresholding) | 5 |
| 20090207453 | Image-processing apparatus, an image-forming apparatus, and a program - An image-processing apparatus for quantizing multi-level (M-level) image data into N-level values, where M>N>1, using a multi-level error-diffusion process or a minimum-average multi-level error method is disclosed. | 08-20-2009 |
| 20120188612 | METHOD OF PROCESSING AN IMAGE TO CLARIFY TEXT IN THE IMAGE - An image file representing at least a portion of a printed document is processed to highlight the differences between foreground material (e.g., text or other characters) from background. The method includes selecting a neighborhood of pixels, determining a weighted average of an attribute values (e.g., luminance) for each pixel, and modifying each pixel's value based on the weighted average. Graylevel scaling, error diffusion, and a bit level conversion are also performed each pixel ends up with either a first attribute value level (e.g., luminance of 0) or a second attribute value level (e.g., luminance of 255). | 07-26-2012 |
| 20130063786 | THRESHOLD MATRIX GENERATING METHOD, THRESHOLD MATRIX GENERATING DEVICE, THRESHOLD MATRIX, QUANTIZATION DEVICE, AND IMAGE FORMATTING DEVICE - A threshold matrix generating method includes: generating q(x, y, g) in which the number of dots in an initial dot pattern is varied; calculating an error matrix (ERR(x, y, g)) of q(x, y, g); calculating AVE(a, b) representing the uniformity of the number of dots in discrete blocks into which the dot pattern has been divided; determining two pixels, of which the dot positions are to be swapped, on the basis of ERR (x, y, g) and AVE(a, b); swapping the dot positions; calculating the evaluation value (MSE(n)) of q(x, y, g) after the positional swapping; and repeating the positional switch of the dots repeating the generation of q(x, y, g) and the positional swapping of the dots with q(x, y, g) functioning as the initial dot pattern until a q(x, y, g) satisfying MSN(n)| 03-14-2013 | |
| 20140063558 | SYSTEM AND METHOD FOR PRODUCING THREE-DIMENSIONAL MULTI-LAYER OBJECTS FROM DIGITAL MODELS - A set of two-dimensional layers is determined based on a digital three-dimensional model. An image corresponding to each of the layers is rendered on each of a corresponding number of sheets of at least partially transparent material. The sheets of material are assembled together to produce a three-dimensional structure corresponding to the digital model. | 03-06-2014 |
| 20160165095 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING SYSTEM, IMAGE PROCESSING METHOD, AND RECORDING MEDIUM - An image processing apparatus includes an image information acquisition unit acquiring average brightness of image data and cumulative frequency distribution of pixels related to gradation of the image data; a conversion range determination unit acquiring a conversion threshold value from the average brightness based on a previously set relationship and determining a gradation conversion range where the gradation of the image data is to be converted based on a gradation where a cumulative frequency corresponds to the conversion threshold value in the cumulative frequency distribution; and a gradation conversion unit converting the gradation of the image data in the gradation conversion range. | 06-09-2016 |
