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| Number | Title | Issue Date |
| 7852535 | Apparatus and method for converting color data using color gamut extension An apparatus and method for converting color data are provided. The method includes generating a CMYK color gamut extended from a CMY color gamut that consists of a cyan (C) colorant, a magenta (M) colorant, and a yellow (Y) colorant, by use of the CMY color gamut a... | 12/14/2010 |
| 7626742 | Color data conversion apparatus and method using gamut boundary descriptors A color data conversion apparatus and method. The color data conversion apparatus includes a K ratio calculator for outputting a K ratio that is calculated using entered color data; a K ratio adjuster for adjusting the calculated K ratio, which is output from the K ... | 12/01/2009 |
| 7564604 | Color signal processing and color profile creation for color image reproduction A signal processing method for converting input color value information (Lab) represented in a uniform color space into a set of five output color levels of black, light black, and three chromatic colors (CMYKLk) is provided. A black output level (K) is determined b... | 07/21/2009 |
| 7554705 | Color gamut mapping with black point compensation The disclosure is directed to techniques for gamut mapping with modified black point compensation (BPC). The gamut mapping techniques promote well-distributed tone compression so that substantial loss of detail in highlight and shadow regions can be avoided. The gam... | 06/30/2009 |
| 7440144 | Image input/output apparatus An image input/output apparatus having a scanner unit disposed at an upper stage of an apparatus body and a liquid jet recording unit installed at a lower stage of the apparatus body includes a window which light passes through between the scanner unit and the liqui... | 10/21/2008 |
| 7417766 | Calibration of color devices A method of adjusting a non-black primary color value including determining first, second and third portions of the non-black primary color value; determining an adjusted first portion using a first one-dimensional look-up table, wherein the first portion is used as... | 08/26/2008 |
| 7411697 | Color conversion device During the device link processing, an original lookup table LUT0 is modified into a modified lookup table LUT1 so that achromatic color value sets B2a will be associated with all the achromatic color value sets B1a. Accordingly, during a ... | 08/12/2008 |
| 7394566 | Calibration of color devices A method of adjusting a non-black primary color value including determining first, second and third portions of the non-black primary color value; determining a first contribution using a first one-dimensional look-up table and the first portion, wherein the primary... | 07/01/2008 |
| 7391533 | Image processing method, image processing apparatus and strage medium An image reading apparatus is provided which includes a contact image sensor comprised of a plurality of sensor chips arranged in series, an analog image processor for processing an analog image signal from the contact image sensor, a unit for conducting black shadi... | 06/24/2008 |
| 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 |
| 7375849 | Balancing grays on color printers A gray balancing technique wherein gray balancing curves are determined by interpolating the primary color data values of color samples to determine discrete combinations of primary colors that substantially match predetermined targets, and performing a curve fittin... | 05/20/2008 |
| 7356181 | Embedded gamut mapping algorithm A color management module which accepts input color image data and transforms the input color image data into output color image data based on information contained in at least one color profile, wherein the color management module includes an interface to an extern... | 04/08/2008 |
| 7355755 | Image processing apparatus and method for accurately detecting character edges An image processing apparatus includes an edge amount calculating device configured to calculate edge amounts of an image in a plurality of directions for each of a plurality of frequency bands of the image. A character edge area determination device determines, bas... | 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 |
| 7342685 | Constraint correlation for computer to plate inkjet system Printing masters are produced by use of an inkjet printing system. The smallest halftone dot size which can be printed by the inkjet printing system is larger than the size of a pixel of the recording grid defined by the addressability of the printing device.... | 03/11/2008 |
| 7342689 | Methods and apparatus for converting full color images to two-color images for printing at a two-color printer Methods and apparatus are provided for converting a full color image to a two-color image for printing at a two-color printer capable of printing black pixels and alternate color pixels. Black pixels and alternate color pixels of the full color image will be printed... | 03/11/2008 |
| 7339699 | Image processing apparatus An image processing apparatus includes a first sensor having a plurality of reading elements arranged in the primary scanning direction, a second sensor disposed in parallel with the first sensor and by a predetermined lines in the secondary scanning direction, an i... | 03/04/2008 |
| 7333657 | Recognizing text in a multicolor image A method and apparatus for identifying and reproducing a background of a pixelmap. The method includes dividing the pixelmap into a grid of tiles, determining for each tile a background component and building a representation of a background in the pixelmap using th... | 02/19/2008 |
| 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 |
| 7321434 | Image processing apparatus and image communication apparatus for protecting image information, and method for controlling the same An image processing apparatus includes a receiving unit for receiving image information, a storage unit for storing the image information received by the receiving unit, an output unit for outputting the image information received by the receiving unit, a discrimina... | 01/22/2008 |
| 7317828 | Color image processing apparatus with background control In an image processing apparatus, a compression processor compresses a color image data, a storage device stores the compressed data, and an expansion processor expands the data read from the storage device. A first background controller controls background of the c... | 01/08/2008 |
| 7312895 | Image processing apparatus and method This invention has as its object to prevent image quality deterioration of vector and raster image parts by allowing adjustment of the toner amount for respective objects when single image data includes both vector and raster image parts. To accomplish this, image d... | 12/25/2007 |
| 7312896 | Digital printing system and digital print To provide a digital printing system that can satisfactorily reproduce yellow, magenta, and cyan colors, respectively, and can excellently reproduce specific skin tones and have significantly improved sensory image quality, a digital printing system reproduces a yel... | 12/25/2007 |
| 7312898 | Transformation of an input image to produce an output image An input image is transformed to produce an output image. First pixels occurring at edges within the input image are detected. Second pixels that are part of text within the input image are also detected. The first pixels and the second pixels are combined to produc... | 12/25/2007 |
| 7310167 | Color converting device emphasizing a contrast of output color data corresponding to a black character A color converting device converts input CMYK data into output color data in a predetermined different format. The color converting device comprises a contrast emphasizing unit emphasizing a contrast of the output color data corresponding to the CMYK data representi... | 12/18/2007 |
| 7304767 | Color processing method, storage medium, color processing apparatus, color transforming apparatus, and image forming apparatus A regulated black colorant amount calculating section calculates a corresponding regulated black colorant amount from the L*a*b* of a plurality of typical color signals in a partial color gamut, which can be represented by three colors excluding black. An optimum bl... | 12/04/2007 |
| 7305079 | Method and apparatus for communicating with one of plural devices associated with a single telephone number A system for (and a method of) selectively establishing communication with one of plural devices associated with a single telephone number is provided. In a preferred embodiment, the system includes a wireless connect unit connected between an enterprise private bra... | 12/04/2007 |
| 7298527 | Image forming apparatus and its control method, and computer program Input print data can assume one of a RGB color space, CMYK color space, and Gray color space. When graphic arts are principally to be printed, data of these color spaces is converted into CIE Color Space XYZ as a standard color space, and data of the standard color ... | 11/20/2007 |
| 7295341 | System for processing monochrome and full-color digital image data In a system for processing full-color image data, such as within a digital color printer or copier, a four-channel architecture is used. Three of the channels handle image data relating to primary color planes, such as CMY. In the other channel, values relating to t... | 11/13/2007 |
| 7289245 | Color facsimile device capable of transmitting color image information represented in appropriate color space through multiple communication channels A color facsimile device capable of transmitting color image information through multiple communication methods, such as G3, G4, T.37, and T.38, which can convert color image information into that represented in appropriate color space for each communication methods... | 10/30/2007 |
| 7283284 | Image reading apparatus A reader has a one-pass both-side reading function and comprises a selector which synthesizes in a dot sequential manner image signals from a CCD for reading a front face image and from a contact sensor for reading a rear face image, and transmits both-side image da... | 10/16/2007 |
| 7274489 | Image forming apparatus and method of controlling the apparatus One processing section 131 executes a process of generating image data K representing a black image on the basis of the image data Y, M, and C, and sequentially executes a process of removing elements of the black image contained in the image data Y, from the... | 09/25/2007 |
| 7274818 | Image forming apparatus A CPU determines whether a generated low-level drawing command is associated with drawing of a gray object and a color value of the gray object is greater than a determination value. If the generated low-level drawing command is associated with drawing of a gray obj... | 09/25/2007 |
| 7269297 | Illuminant-neutral gray component replacement in systems for spectral multiplexing of source images to provide a composite image, for rendering the composite image, and for spectral demultiplexing of the composite image Methods and apparatus for spectrally-encoding plural source images and for providing the spectrally-encoded plural source images in a composite image, for rendering the composite image in a physical form, or for recovering at least one of the encoded source images f... | 09/11/2007 |
| 7259893 | Methods and apparatus for gray component replacement blending Color processing methods and apparatus are provided that blend the gray component replacement (“GCR”) level of arbitrarily-specified input color data with an estimate of the GCR level of an output profile, and then converts processed device-independent data to o... | 08/21/2007 |
| 7245763 | Gray component replacement as part of marking process control algorithm In an environment which produces images as a function of the combination of cyan, magenta, yellow and black color components on an output print, there is provided a method that 1) increases area coverage of a color that is below the threshold of development stabilit... | 07/17/2007 |
| 7240839 | Color measurement apparatus operable as a pointing device, a computer display measurement device and a printer output measurement device A color measurement apparatus is adapted as an attachment for a personal computing system. An interface integral to the color measurement apparatus couples the color measurement apparatus to the personal computing system. A computer pointing device integral to the c... | 07/10/2007 |
| 7236265 | Image reading apparatus, image forming system, image reading method, and program therefor An image reading apparatus includes an imaging unit which has a plurality of channels and which, for the channels, outputs effective signals output from photo-receiving sections for receiving light from a subject, and optical black signals output from light-shieldin... | 06/26/2007 |
| 7230737 | Image processing method and apparatus An image processing method for inputting a color image signal and correcting the color image signal according to an observation condition, comprising the steps of: judging whether or not the input color image signal represents achromatic color; and controlling the c... | 06/12/2007 |
| 7227666 | Dynamic selection of rendering intent for color proofing transforms In general, in one aspect, the invention features an apparatus, method, and computer program product for automatically selecting a rendering intent. It includes identifying a device color profile associated with a device; and automatically selecting a rendering inte... | 06/05/2007 |
