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| Number | Title | Issue Date |
| 8184348 | Color separation method and image processing apparatus In a case wherein a color separation table is prepared, color separation is provided, so that the density characteristic to be output is maintained, and the total colorant amount is not beyond the limit value of the total colorant amount. Further, the optimal color ... | 05/22/2012 |
| 8149482 | System and method for characterizing color separation misregistration A system and method is provided for characterizing color separation misregistration associated with marking a substrate. The method includes providing an input image having a plurality of patches, each patch having a pattern using a first and second color; marking a... | 04/03/2012 |
| 8064112 | Color separation and reproduction method to control a printing process A computerized printer utilizes a color separation and printing process that adds brightness, saturation and ink density to traditional CMYK printing processes and optionally eliminates the need for Black (K) color separation data and Black ink in the printer. The p... | 11/22/2011 |
| 7894109 | System and method for characterizing spatial variance of color separation misregistration A method is provided for characterizing color separation misregistration of a printer device, the method including receiving from the printer device an output image having marked calibration patches having a variety of color separation configurations, each using a f... | 02/22/2011 |
| 7746526 | Image processing apparatus and image processing method for generating a color separation table used in converting an image signal for the amount of a colorant An image processing method generates a color separation table, the color separation table being used in converting an image signal to a signal for a colorant for use in a printer and storing grid-point data as the colorant signal so as to associate the grid-point da... | 06/29/2010 |
| 7742205 | Perceptual color matching method between two different polychromatic displays The invention relates to a color matching method for transforming a color representation of a first set of color primaries with a plurality of first signals to a second set of color primaries with a plurality of second signals in a first domain. The color matching m... | 06/22/2010 |
| 7525701 | Color image processing method, color image processing apparatus, color image processing program, and record medium A black amount/solid color amount determination section determines a black amount K and a solid color amount O from an input L*a*b* color signal and transfers K and O to a YMC determination section and an image record signal output section. The YMC determination sec... | 04/28/2009 |
| 7460283 | Color separation table generation method and image processing apparatus When a special color, which is a color other than the vertexes of the RGB cube during the generation of a color separation table, is used as an ink color, the invention sets a grid point for the special color on a side connecting cube vertexes. Then it becomes possi... | 12/02/2008 |
| 7457014 | Image processing apparatus and image processing system An SPU (image processor) includes: a plurality of defective pixel correction circuits each for correcting a color component signal associated with a defective pixel of an image sensor in accordance with a control signal; an input control circuit for receiving defect... | 11/25/2008 |
| 7443539 | Color reproducing device A multi-spectral camera is provided which includes an image pickup optical system which forms an image of a subject. A wavelength selecting device receives light beams from the image pickup optical system and outputs a light beam having a selected wavelength. A wave... | 10/28/2008 |
| 7436545 | Method of forming image, image forming apparatus, and program for carrying out the method If an ink for a particular color (for example, red) having an excellent color developing characteristic is used in addition to inks for three primary colors of subtractive color mixture, the high color reproducibility is to be maintained for a long period. To accomp... | 10/14/2008 |
| 7433077 | Gamut mapping between multiple boundary regions Mapping color image data from a source color gamut to a destination color gamut, wherein the mapping includes identifying source color boundary regions in the source color gamut based on descriptor data provided in a source color descriptor data structure, and deter... | 10/07/2008 |
| 7420708 | Method for processing color image data employing a stamp field A method for processing image data that employs a stamp field that contains data representing a distance metric for use with a variety of error diffusion operations. The distance metric possesses distance-order preservation permitting the distance from a previous do... | 09/02/2008 |
| 7414755 | Color quality assessment and color control during color reproduction A process for color quality assessment and color control in a color printing process is provided. The process utilizes a test element array including several test elements is co-reproduced with an image to be reproduced, whereby for the pixels of the image and the t... | 08/19/2008 |
| 7400430 | Detecting and compensating for color misregistration produced by a color scanner A method, computer program product and system for detecting and compensating for color misregistration. A black/white edge or a solid color edge on a target may be scanned. A black/white edge may refer to a black image, e.g., black text, on a white surrounding backg... | 07/15/2008 |
| 7382493 | Image processing for optimal color density decomposition based on calculated graininess and equiluminance contours Graininess and calorimetric values of color patches formed by an image generating system using dark and light colored recording agents are input to calculate equiluminance contours. Color density decomposition is then performed based on the calculated graininess and... | 06/03/2008 |
| 7379209 | Color separation of pattern color spaces and form XObjects Systems and computer program products for performing color separation operations. In one aspect, a system creates a high-level representation of a graphical container as a separated element the first time a graphical container is used. The high-level representation ... | 05/27/2008 |
| 7375853 | Image processing apparatus and method A separating unit determines, for an image data, whether there exists black data, and generates density data from the black data when the black data exists, and generates color data from data other than the black data. A multinarizing unit converts the color data in... | 05/20/2008 |
| 7372469 | Image transforming method The present invention provides a method for rotating YUV4:2:0 image in a digital display device, such as TV image system. A YUV4:2:0 image is separated to a Y division matrix and a U and V division matrix. Then the Y division is performed a rotation matrix calculati... | 05/13/2008 |
| 7369284 | Image signal processing method, image signal processing device, and image signal processing system A color image signal processing device having a high resolution and excellent color reproducibility even though the device comprises a one-chip color sensor. The data format for transmitting image information inputted through an input unit to an output unit includes... | 05/06/2008 |
| 7365890 | Color processing apparatus and method and image processing apparatus As a method of calibrating colors other than primary colors such as secondary colors, the contents of an ink color-separation table are reconstructed. However, it is difficult to reconstruct the ink color-separation table within the limitation of total ink amount pe... | 04/29/2008 |
| 7365854 | Apparatus and methods for high speed RGB color discrimination Device and method for inspecting a polychromatic region, such as a polychromatic pattern, on a moving workpiece. The method includes device includes a solid-state light source, preferably a light emitting diode, adapted to emit light in a range of wavelengths for il... | 04/29/2008 |
| 7355737 | Apparatus and method for two-color printing based on single color data A printer 10 has a reception unit 28 for receiving print commands from a host 12, and has print heads 64, 66 capable of printing multiple colors. A data processing part 24 applies a specific colorization process according to a prin... | 04/08/2008 |
| 7355750 | Image processing apparatus, image processing method and image processing program An image processing apparatus in which an appropriate color separation table is selected for an unexpected print medium. In plural color separation tables 108, maximum total color-material color discharge amounts are set to be stepwisely different. A γ corre... | 04/08/2008 |
| 7352893 | Representing extended color gamut information A computer-readable medium of one embodiment of the invention is disclosed that has a data structure stored thereon to represent extended color gamut information for a pixel. The data structure has a number of data fields, where each data field is to store a number ... | 04/01/2008 |
| 7349135 | Time multiplexed image data decompression circuit A circuit which uses a compressor to divide each separation image into 8-line strips, and to independently compress each strip, a single decompressor to decompress two or more color image separations, strip by strip, by interleaving them, and to apply them to two or... | 03/25/2008 |
| 7345793 | Scan method A scan method comprising a sensing photo module applicable in a scan apparatus for scanning a document is disclosed. The sensing photo module is equipped with photo sensors parallel to each other and detects the photo signal at every collection distance. The photo s... | 03/18/2008 |
| 7342687 | Image reading apparatus and light source stability determination method A scanner has an imaging device which is constituted by a cold-cathode tube, includes a light source for irradiating light to a reflection surface of a reference white plate and a plurality of pixels arranged in one line, and detects light reflected on the reflectio... | 03/11/2008 |
| 7339705 | Apparatus for and method of making measurement on printed sheet A printed sheet measurement apparatus initially captures images on a reference sheet and a printed sheet to store respective image data. Next, both of the image data are displayed on a display element, and a pair of corresponding points are specified for each of the... | 03/04/2008 |
| 7339700 | Profile adjustment method, apparatus, and program The invention makes it possible to perform a quantitative evaluation not influenced by experience and sensitivity of a user, upon adjustment of a profile. The adjustment of first conversion data, for converting device independent data included in a profile describin... | 03/04/2008 |
| 7336819 | Detection of sky in digital color images A method of detecting sky in a digital color image having pixels is disclosed. The method includes identifying pixels from the digital color image representing an initial sky region; developing a model based on the identified sky pixels, wherein such model is a math... | 02/26/2008 |
| 7336395 | Data conversion system, image processing and image forming apparatus Disclosed is a system of image data conversion, capable of setting conversion characteristics with more ease even for data having mixed image attributes, and of reducing the amount of data and the size of memory required. The conversion system includes processing el... | 02/26/2008 |
| 7333236 | Method for the mapping of colour values of a colour image in the colour values of a highlight-colour image and corresponding print system The invention relates to a mapping method, whereby color values of the color image to be mapped, represented in the RGB color space are mapped in the highlight-color color space, corresponding to a projection of the color values in highlight-color. The corresponding... | 02/19/2008 |
| 7330287 | Tone scale adjustment A method of processing data from a digital image to optimize the tonescale to a printer being used without operator intervention adjusts the gain and offset of the input image data to occupy the full range of the printer, adjusts the shadow and highlight regions of ... | 02/12/2008 |
| 7327492 | Image processing device and image processing method In a black character detection processing, RGB data read from a line buffer is converted into YIQ data. For a subject pixel, a subject area centered on the subject pixel is set, and a judgment pixel that has the lowest brightness in the subject area is set. Then, a ... | 02/05/2008 |
| 7321452 | Image processing apparatus An object of the invention is to enable appropriate interpolation even in a halftone image binarized by error diffusion or the like. While image reading signals from a hand scanner are inputted to an A/D conversion section and converted to multivalued digital signal... | 01/22/2008 |
| 7319545 | Method and apparatus for calibration of a color printer A method permitting an end user to recalibrate a color reproduction device. The color reproduction device includes a device for converting the native color values of the scanner into a device independent color space, a test target, and the desired values of each pat... | 01/15/2008 |
| 7315405 | Image forming apparatus and image scanning method As a reading light source, a cold-cathode tube having three wavelengths and an LED array are used in combination. The cold-cathode tube and the LEDs are lit up at different timings when reading a document. ... | 01/01/2008 |
| 7312891 | Image processing method and apparatus When a color reproduction model of a device is generated, colorimetry of a 9×9×9 grid, for example, is performed utilizing equidistant signal values in the color space of the device. Generally, if the number of grid points is increased, the precision with which th... | 12/25/2007 |
| 7307766 | Black and white image detection A method and apparatus for classifying an input image as black and white or color is described. The method calculates a first ratio of a color pixel portion to a total pixel portion in the input image. Next, the method calculates a second ratio of the color pixel po... | 12/11/2007 |
