Patent application number | Description | Published |
20080239347 | Image Processing Apparatus and Method for Detecting a Background Color - A background color of a document is detected based on image data of a colormetric system in which brightness and color components are separated. A color plane is divided into a plurality of color areas, and the number of elements of image data belonging to each color area is counted. The number of elements of image data belonging to each area of a multiple area constituted of mutually adjacent color areas is then counted. A color area in which the number of elements of image data exceeds a first threshold is extracted and given a positive evaluation. A multiple area in which the number of elements of image data exceeds a second threshold is extracted and a positive evaluation is given to each color area in the multiple area. A color area receiving a positive evaluation both individually and as part of a multiple area is specified as a color area of background color. | 10-02-2008 |
20080252926 | Image Scanning Device - A method for determining whether or not a specific image is contained in a scanned image. An image on a first side of a document is scanned and first image information indicating the scanned image is outputted. Specific component information is extracted indicating a specific component of each pixel out of information indicating a pixel value contained in the first image information. Whether or not the specific image is contained in the image on the first side is determined based on the extracted specific component information and stored specific image information. | 10-16-2008 |
20080252947 | IMAGE PROCESSING APPARATUS AND NETWORK MULTIFUNCTION PERIPHERAL - An image processing apparatus includes a CPU arranged to select one of a plurality of pixel rates including a normal pixel rate and high pixel rates which are higher than the normal pixel rate when processing at a low resolution. The image processing apparatus also includes a timing generator arranged to control a CCD line sensor so that the pixel data is outputted at the selected pixel rate, a switch arranged to select the pixel data of pixels at different positions in a line, from line to line, from among the pixel data acquired by scanning the plurality of consecutive lines according to a control signal from the timing generator, and an ASIC arranged to import the selected pixel data and apply different filters to the imported pixel data depending on the line where the target data to be acquired is positioned. | 10-16-2008 |
20080273746 | Image Processing Apparatus - An image processing apparatus which is able to make a copy whose character information is clearly readable for a predetermined document registered as a special document is provided. A fixed-format document including the character information written in a predetermined format is determined as the special document and the special document identification information for identifying the special document is stored. An original document determining unit compares document color distribution information (color distribution information relating to a sample area of a special document) retained as the special document identification information with original document color distribution information (color distribution information of an area corresponding to the sample area of the special document) and, when the both of them match, the original document is determined to be a special original document. When the original document corresponds to the special document, image data acquired by reading out the original document is converted into monochrome image data and is recorded on a recording sheet. | 11-06-2008 |
20090046313 | Image Processing Apparatus and Image Processing Method - An image processing apparatus acquires an image by optically scanning an original document and determines whether or not the document is of standard size. A histogram is created indicating the number of pixels with respect to each luminance value of the acquired image. A background color peak is specified that corresponds to a background color of the original document in the created histogram. A background color portion of the original document is specified that corresponds to a luminance area including the background color peak. The background color portion is replaced with a white color that will not be a target for printing. | 02-19-2009 |
20090109502 | IMAGE PROCESSING APPARATUS, IMAGE SCANNING APPARATUS, AND IMAGE PROCESSING METHOD - In an image processing apparatus, an inclination detecting unit acquires, with respect to each line of image data, positions of a left edge pixel and a right edge pixel that are positioned at a boundary between an original document and a background. A feature point position is acquired based on features of the positions of the edge pixels of a plurality of lines. Based on a feature of the position of at least one of the left edge pixel and the right edge pixel of the line that includes the feature point position or of the line that is near the former line, a status regarding a direction of the document is acquired. Furthermore, the acquired statuses are counted, the most counted status is determined, two feature points are selected from the feature points having a status that matches the most counted status, and the document inclination is calculated from the two feature point positions. Thereafter, the inclination of the document can be compensated for. | 04-30-2009 |
20090110328 | IMAGE PROCESSING APPARATUS, IMAGE SCANNING APPARATUS, IMAGE PROCESSING METHOD, AND IMAGE PROCESSING PROGRAM - A method and system for correcting the inclination of a scanned document in which two integers “a” and “b” are input to perform a rotation process. Each time an x-coordinate of a target pixel of a rotated image is changed by one pixel, “a” is added to a factor “kwy”. When “kwy” becomes more than or equal to “b”, “b” is subtracted from “kwy”, and a y-coordinate of a corresponding target pixel of an original image is changed by one pixel. Each time a y-coordinate of the target pixel is changed by one pixel, “a” is added to a factor “kwx”. When “kwx” becomes more than or equal to “b”, “b” is subtracted from “kwx”, and an x-coordinate of the corresponding target pixel of the original image is changed by one pixel. Four pixels including the corresponding target pixel are used to acquire a pixel value of the target pixel by two-dimensional interpolation by ratios acquired by dividing “kwx” and “kwy” respectively by “b”. | 04-30-2009 |
20090122369 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing method and apparatus includes a color space conversion unit arranged to convert pixel data scanned by a line sensor of each color component into first chromaticity data and second chromaticity data, and an achromatic color determining unit arranged to determine whether or not the pixel data is achromatic. The achromatic color determining unit includes a comparison unit arranged to compare an achromatic color determination area with the pixel data in a color space defined by orthogonal coordinates having each chromaticity data as a coordinate axis. The achromatic color determination area is an elongated area that includes a coordinate origin of the color space, that is set based on a coordinate position of a false color acquired by using a size and position of displacement of the scanning position of each color component generated in accordance with the scanning speed, and that extends in an opposite direction from the coordinate origin. | 05-14-2009 |
20090141320 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing apparatus reads out image data stored in an image memory unit, performs size reduction, when the read out image data is color image data, on a plurality of pieces of color component data of the color image data by using different pixel number reducing circuits and different filter circuits, performs size reduction, when the read out image data is monochrome image data, on a plurality of pieces of monochrome image data by using the different pixel number reducing circuits and different filter circuits, and generates reduced-size images for a thumbnail display from the reduced-size image data. | 06-04-2009 |
20090268264 | IMAGE PROCESSING APPARATUS, IMAGE SCANNING APPARATUS, AND IMAGE PROCESSING METHOD - An image scanner apparatus includes an automatic image acquiring unit having a feature point detecting unit, an inclination calculating unit, a feature point rotation calculating unit, and a rectangular area calculating unit. The feature point detecting unit is arranged to detect a plurality of feature points of an original document outline from image data acquired by scanning an original document. The inclination calculating unit is arranged to calculate values regarding an original document inclination. The feature point rotation calculating unit is arranged to calculate positions of rotated feature points acquired by rotating the plurality of feature points detected through the feature point detecting unit around a prescribed center point by an inclination angle in a direction in which the original document inclination is corrected. The rectangular area calculating unit is arranged to calculate a non-inclined rectangular area having an outline that is disposed in the vicinity of the rotated feature points based on the positions of the rotated feature points. | 10-29-2009 |
20100134858 | IMAGE SCANNING DEVICE AND CALIBRATION METHOD THEREOF - Ina calibration method of an image scanning device, an original for use calibration including a plurality of patches each having a different tone is scanned, scanned tone values of the patches of the original are acquired with respect to each of a plurality of color components, a curve function is acquired with respect to each of the plurality of color components based on the scanned tone values and target tone values of the patches predetermined with respect to each of the plurality of color components, each curve function approximating a relationship between an input defined as the scanned tone value and an output defined as the target tone value, and the curve function is acquired with respect to each of the plurality of color components such that input value intercepts, each being defined as an upper limit of a range of the input value in which range the output value is maintained at zero, are equal among the plurality of color components. | 06-03-2010 |