Class / Patent application number | Description | Number of patent applications / Date published |
358300230 | Look-up table for image processing or print attribute data (e.g., threshold value, print element property) | 58 |
20080218804 | Image Forming System, Computer Readable Recording Medium Storing Image Forming Program and Image Forming Method - An image forming system according to an aspect of the present invention comprises a component data acquiring unit that acquires a component from color lookup table data; a verifying unit that determines whether or not the component of the color lookup table data acquired by the component data acquiring unit has been generated according to a predetermined generating rule; and a download data generating unit that downloads the color lookup table data and generates download data to be used in image forming processing from the color lookup table data after the verifying unit determines that the component has been generated according to the generating rule. | 09-11-2008 |
20080239402 | COLOR CONVERSION APPARATUS, COLOR CONVERSION METHOD AND COLOR CONVERSION PROGRAM - A technique is provided that can realize improvement in memory access efficiency and reduction in the processing volume in interpolation calculation with respect to color conversion processing using a two- or more-dimensional lookup table. | 10-02-2008 |
20080239403 | COLOR CONVERSION APPARATUS, FILTER PROCESSING APPARATUS AND COLOR CONVERSION METHOD - A technique that can contribute to improvement of processing efficiency in performing image processing employing an SIMD command is provided. | 10-02-2008 |
20080252931 | Image output color management system and method - Disclosed is an image color management system and method for controlling an image output device. The method for controlling the image output device comprises generating an image output device profile LUT (look-up-table) characterizing the color profile of the image output device for a plurality of drift states associated with the image output device; generating a set of basis vectors representing the LUT; storing the set of basis vectors in an image output device controller; and generating an image output device active profile associated with a current drift state of the image output device to convert image color data for display or printing by the image output device, wherein the image output device active profile is generated from the set of basis vectors. | 10-16-2008 |
20090051973 | COLOR PROCESSING APPARATUS AND METHOD - A color processing apparatus includes an input range obtaining unit configured to obtain an input range of input color data represented by a first color space that is an extended color space, a setting unit configured to set grid point coordinate values for each of a plurality of color components included in the input color data, and a generating unit configured to generate a look-up table by performing conversion processing on each of look-up-table coordinate values corresponding to grid point coordinate values set for the plurality of color components, and storing a result of the conversion processing in the look-up table. The setting unit sets the grid point coordinate values such that each of the primary colors in a second color space that is a base color space is located at a grid point and the color components have the identical grid point coordinate values among the primary colors. | 02-26-2009 |
20090059305 | APPARATUS AND METHOD FOR INTEGRATING PRINT PREVIEW WITH DATA MODELING DOCUMENT EDITING - A computer readable storage medium includes executable instructions to supply, in an editor mode, a first set of data modeling objects in a document. A user request to enter a print preview mode is accepted. The print preview mode is entered while the editor mode remains active. The document is applied to a page layout with a set of pages. A set of pages to print are specified, where individual pages in the set of pages to print contain a subset of data modeling objects in the first set of data modeling objects. | 03-05-2009 |
20090067007 | CALIBRATION METHOD AND PRINTING APPARATUS - This invention relates to a method capable of performing labor- and time-saving calibration at high precision, and a printing apparatus to which this method is applied. According to the method, a plurality of patches which are based on achromatic (K) data and have different tone values, and a plurality of patches which are based on chromatic color (C, M, and Y) data and have different tone values are printed. These patches are measured separately for the chromatic and achromatic colors. Chromatic and achromatic color correction tables are separately created to execute calibration. Compared to calibrating C, M, Y, and K, the number of printing media, the coloring material, and the labor of the user can be reduced, and calibration can be performed at higher precision. | 03-12-2009 |
20090109491 | RAW-QUALITY PROCESSING OF NON-RAW IMAGES - Technologies, methods, and systems for generating and maintaining profile information with processed image data, and for enabling scene-referred high-fidelity adjustments to non-raw, processed image data. | 04-30-2009 |
20090116073 | IMAGE FORMING DEVICE, IMAGE FORMING METHOD, AND RECORDING MEDIUM - Density-correction-table lists showing an amount of density changes in respective density levels of images that exist after an image having a predetermined density has been printed on a predetermined number of sheets are maintained. The amount of density changes in the respective density levels for an image ratio that exists after the predetermined number of sheets have been printed on and for the predetermined number of sheets that have been printed on are obtained with reference to values in the maintained density-correction-table lists. A density correction characteristic is determined using the obtained amount of density changes. | 05-07-2009 |
20090185230 | METHOD AND APPARATUS FOR OPTIMUM BLACK COMPONENT DETERMINATION FOR GRAY COMPONENT REPLACEMENT - A multi-dimensional printer profile look-up table for color correction is generated. First, an initial estimate for a black (K) component in a four-color color space for received color signals in the device independent color space is generated by using a three-dimensional parametric function. Next, initial estimates for the three non-black color components of the four-color color space are generated from the generated initial estimate for the black (K) component and the received color signals. Then, a printer profile including a map that maps the device independent color space to the four-color color space is generated using the generated initial estimates for the black (K) and the three non-black color components in the four-color color space. | 07-23-2009 |
20090185231 | Printing control device, printing system and printing control program | 07-23-2009 |
20090185232 | Printing control device, printing system and printing control program - A color difference ΔE between a target color value expressed by color measurement data MD obtained by measuring colors of a target TG under plural light sources and an estimation color value obtained when a printer performs printing on the basis of an ink amount set φ is calculated for each of the light sources. When the color difference can be calculated for each of the light sources, an evaluation value E (φ) obtained by linear combination of the color differences is calculated. In addition, the ink amount set φ is calculated as an optimum solution for minimizing the evaluation value E (φ). | 07-23-2009 |
20090190180 | METHOD AND APPARATUS FOR PRINTER CHARACTERIZATION - A one dimensional transformation of colorant values before transforming them into a color using a printer model enables linearization of the gradation of each color component as a function of colorant values. The method reduces interpolation error if the printer model uses piecewise linear interpolation. | 07-30-2009 |
20090190181 | IMAGE PROCESSING APPARATUS AND METHOD - Disclosed is an image processing apparatus, including: a comparing and detecting section for comparing two image data, which respectively obtained by nearly simultaneously reading both sides of a document, on a pixel to pixel basis and detecting a pixel, on which off-set arises, from the two image data based on a comparison result obtained by comparing the two image data; and a correcting section for correcting at least any one of brightness, hue and chroma based on information including brightness and hue of the detected pixel. | 07-30-2009 |
20090213434 | Printing Control Apparatus, A Printing System, and Printing Control Program - A printing control apparatus that designates a color material amount set that corresponds to amounts of a plurality of color materials, to a printing apparatus and performs printing by controlling the printing apparatus, the printing control apparatus comprising an index acquiring unit that acquires an index specifying a target; and a confirmation patch printing unit that acquires the color material amount set corresponding to the acquired index with reference to a lookup table defining a correspondence relation between the index and the color material amount set, and designates the color material amount set to the printing apparatus to print a confirmation patch, wherein the lookup table is created by estimating a target value and defining a correspondence relation between an estimated color material amount set and the target value, and wherein a correction target value is acquired and the color material amount set is re-estimated and revised. | 08-27-2009 |
20090244633 | Systems and Methods for Color Data Compression - Systems and methods are provided for reducing data size of at least one bitmap image using a look-up table, wherein the look-up table stores information correlating a plurality of compression ratios to a set of compression parameters and wherein the bitmap image comprises a plurality of image components, each image component associated with a distinct color plane. The plurality of color planes may be ranked using a dominance rank, wherein the dominance rank for a color plane is based on image component data associated with the color plane. At least one compression ratio may be associated with each color plane based on the dominance rank associated with the color plane. At least one image component may be compressed according to the compression ratio associated with the color plane corresponding to the image component using compression parameters obtained from the look-up table. The compression ratio may be iteratively adjusted, until the total data size of the plurality of image components is below a data size threshold. | 10-01-2009 |
20090244634 | Image Processing Device, Image Processing Method, and Image Processing Program - An image processing device includes a memory portion for storing an ejection amount conversion table showing a relationship between image data serving as reference and a fluid ejected from a fluid ejecting head for a predetermined number of pixels, and an ejection amount estimation unit which estimates an ejection amount of the fluid from input image data on the basis of the ejection amount conversion table stored in the memory portion. | 10-01-2009 |
20090268255 | SYSTEM AND METHOD FOR COLOR SPACE TRANSFORMATION EMPLOYING THREE DIMENSIONAL LINEAR INTERPOLATIONS - The subject application is directed to a color space transformation system and method employing multiple three-dimensional linear interpolations. First, N-channel multi-dimensional color space color image data is received into a color lookup table, which includes entries having values in a multi-dimensional color space corresponding to selected values in an N-channel multi-dimensional color space, with N being any integer greater than 2. Values in the color lookup table are then addressed in accordance with the received image data. Next, 2 | 10-29-2009 |
20090323122 | COLOR CONVERSION TABLE CREATING DEVICE - A color conversion table creating device includes a gray data creating unit, a light area data creating unit, a dark area data creating unit, a first grid point correspondence relationship determining unit, a second grid point correspondence relationship determining unit, and a color conversion table creating unit. The second grid point correspondence relationship determining unit includes a gray-dark auxiliary line setting unit, an intersecting point setting unit, an intersecting point signal determining unit, an interpolation coefficient determining unit, and a second grid point interpolating unit. The gray-dark auxiliary line setting unit sets a gray-dark auxiliary line passing through a second grid point and intersecting with both a gray line and a dark line. The intersecting point setting unit sets a point at intersection of the gray-dark auxiliary line with the gray line as a gray-dark auxiliary line gray intersecting point, and sets a point at intersection of the gray-dark auxiliary line with the dark line as a gray-dark auxiliary line dark intersecting point. The intersecting point signal determining unit determines, based on gray data and dark area data, an output color signal corresponding to the gray-dark auxiliary line gray intersecting point and an output color signal corresponding to the gray-dark auxiliary line dark intersecting point. The interpolation coefficient determining unit determines a light interpolation coefficient that reflects characteristic of light area data. The second grid point interpolating unit determines a second grid point correspondence relationship for the second grid point between an input color signal and an output color signal by performing interpolation between the output color signals corresponding to the gray-dark auxiliary line gray intersecting point and the gray-dark auxiliary line dark intersecting point by using the light interpolation coefficient. | 12-31-2009 |
20090323123 | COLOR CONVERSION SYSTEM AND METHOD - A processor is provided that includes a primary memory and color conversion logic. The primary memory may store a first color look-up table (LUT) related to a second color space. The color conversion logic, in response to a received set of pixels having color values in a first color space, converts the received set of pixels to a second color space. The color conversion logic selectively accesses, based on a comparison of one or more pixel parameters to a threshold, one of the primary memory and a secondary memory located on a second device to obtain a color value of the second color space that is associated with each pixel of the set of pixels. The color conversion logic monitors the number of times that each of the primary memory and the secondary memory are accessed and automatically adjusts the threshold to maintain an access ratio. | 12-31-2009 |
20100067060 | POPULATING MULTIDIMENSIONAL LOOK-UP TABLES WITH MISSING VALUES - Values at nodes of a LUT which is arranged as a rectangular grid of cells are populated, wherein the populated values model an underlying process that transforms from a first color space to a second color space, and some of the cells of the LUT are completely inside a constraint boundary of the underlying process and some of the cells are not completely inside the constraint boundary. The cells are indexed in a certain order. Samples of the underlying process are accessed. Values of nodes for cells whose nodes are all within the constraint boundary are populated first by using the samples of the underlying process. Values of nodes for cells whose nodes are not all within the constraint boundary are populated second by visiting such cells in the indexed order and populating values for the unpopulated nodes using populated ones of the nodes of such cells and the accessed samples. | 03-18-2010 |
20100079815 | Systems and Methods for Luminance Determination - Systems and methods are provided for generating at least one look-up table, wherein the look-up table holds at least one luminance value in a second color space. In some embodiments, the luminance value can be computed for distinct combinations of color component values corresponding to a plurality of color components in a first color space. The method comprises computing at least one luminance value in the second color space based on a portion of the color component value combination; deriving an address in a look-up table based on the portion of the color component combination; and storing the computed luminance value in the look-up table at the derived address. | 04-01-2010 |
20100079816 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD AND PRINTING APPARATUS - The image forming apparatus includes: an area tone setting device which sets an arbitrary tone correction table for each of image forming areas obtained by dividing a recording medium into a plurality of areas; a tone correction table storage device which stores tone correction tables set respectively for the image forming areas by the area tone setting device; an area judgment device which judges the image forming areas on which respective pixels constituting input image data are to be printed; a tone correction table selection device which selects from the tone correction table storage device one of the tone correction tables corresponding to the image forming area judged by the area judgment device; and a tone correction device which performs tone correction of each pixel constituting the input image data, using the tone correction table selected by the tone correction table selection device. | 04-01-2010 |
20100085605 | LOSSLESS COMPRESSION OF COLOR LOOK-UP TABLE VIA HIERARCHICAL DIFFERENTIAL ENCODING OR CELLULAR INTERPOLATIVE PREDICTION - A color look-up table (CLUT) is compressed in a lossless manner. The CLUT includes nodes that convert values of a first color space to corresponding values of a second color space. The CLUT is received in a serialized node-by-node manner. For each of some of the nodes the following is performed in the order in which the nodes are received in the serialized node-by-node manner. First, a difference value is determined that represents compression of a value of the node, in accordance with a hierarchical differential encoding approach or in accordance with a cellular interpolative prediction approach. Second, the difference value is stored in lieu of the value of the node being stored, to compress the value of the node in the lossless manner. | 04-08-2010 |
20100103468 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD FOR PROCESSING SCREEN-PROCESSED IMAGE - A multi-value code image generation part generates a multi-value code image by assigning first code information, which is obtained by encoding a dot pattern in a specific area, to each growth core. A multi-value code image affine transformation part performs affine transformation on the multi-value code image. A multi-value code image assignment part assigns second code information to each of the growth cores before the affine transformation according to the first code information of at least one growth core after the affine transformation, which growth core neighbors close to the growth core before the affine transformation. A dot pattern development part develops the dot pattern for the specific area at each of the growth cores before the affine transformation according to the second code information. | 04-29-2010 |
20100157374 | METHOD AND SYSTEM FOR IMPROVED COPY QUALITY IN A MULTIFUNCTION REPROGRAPHIC SYSTEM - A method and system reconstructs a contone image from a binary image by first tagging pixels to identify one of a multiplicity of image content types. The tag information and the pattern of bits surrounding the pixel to be converted to a contone value are used to reconstruct a contone image from a binary image. The pattern of bits in the neighborhood is used to generate a unique identifier. The unique identifier is used as the address for a lookup table with the contone value to be used wherein each lookup table corresponds to an image context type. | 06-24-2010 |
20100165412 | Image Formation Apparatus, Color Conversion Program Embodied on Computer Readable Medium, and Color Conversion Method - In order to accelerate the processing speed using existing hardware or program, MFP sets a reference lattice point in the device space of a printer (S | 07-01-2010 |
20100195162 | Color To Monochrome Conversion - A digital image processing method and system converts color images to monochrome images. Color image data is clustered. Centroids of clusters are mapped to monochrome values. The separation of the monochrome levels is adjusted, based on relative significance of corresponding clusters. Color pixels in the clusters are mapped to the adjusted monochrome levels, and the resulting monochrome pixels are rendered. | 08-05-2010 |
20100195163 | 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. | 08-05-2010 |
20100238511 | EFFICIENT IMAGE PRINTING WITH MULTIPLE-SIZED DOTS - A method for printing an image with a printing system including the steps of multitoning image data to produce a multitoned image having a multitone resolution; providing a look-up table, wherein each look-up table entry specifies a number of dots of a first size and a number of dots of a second size; using the look-up table to expand the multitoned image data from the multitone resolution to a print-ready image having a printing resolution; and printing the print-ready image using a first array of dot forming elements for forming dots of a first size and a second array of dot forming elements for forming dots having a second size that is greater than the first size. | 09-23-2010 |
20100271665 | ADJUSTING THE NEUTRAL BEHAVIOR OF A COLOR MARKING DEVICE - What is disclosed is a novel system and method for adjusting the gray balance of a multifunction color marking device in order to change the device's neutral behavior to a desired level of acceptability. The gray balance aim curve is specified by: L*, L*(aim), a*(aim) and b*(aim), where L*(aim)=f | 10-28-2010 |
20100302596 | COLOR LOOK UP TABLE ADJUSTING APPARATUS, RECORDING MEDIUM ON WHICH A COLOR LOOK UP TABLE ADJUSTING PROGRAM IS RECORDED AND COLOR LOOK UP TABLE ADJUSTING SYSTEM - A color look up table adjusting apparatus includes: a color gamut acquisition unit that determines a color gamut from an image output by an image forming apparatus, and determines, from an image output by another image forming apparatus, a position of input color values in a color space as a target point; an interpolation process unit that calculates a point corresponding to the target point within the color gamut of the image forming apparatus as an adjustment point; a color value adjustment table generating unit that generates a color value adjustment table for converting the input color values into input color values corresponding to a position of the adjustment point; and a table organization unit that converts arbitrary input color values based on the color value adjustment table, and inputs input color values obtained after the conversion as input color values based on a color look up table. | 12-02-2010 |
20110038010 | SYSTEMS AND METHODS FOR BUILDING A COLOR LOOKUP TABLE FOR A PRINTER - Color separation systems and methods improve color constancy and smoothness of a color lookup table (LUT) for a printer. A plurality of nodes of the LUT may be defined in calorimetric space, and the nodes out of the printer gamut may be mapped to the printer gamut surface. All possible colorant combinations are then determined that produce each node in the LUT in a device independent color space based on an inversion of the spectral based printer model. Next, a specific image quality metric combination based on a color inconstancy index (CII) and a gray component replacement (CGR) strategy is defined. And a colorant combination is determined for each and every node in the LUT based on this metric. A smoothing filter may be used to smooth the lookup table. | 02-17-2011 |
20110075223 | COLOR SELECTING METHOD, IMAGE PROCESSING METHOD, IMAGE PROCESSING APPARATUS, AND RECORDING MEDIUM - A color selecting method, an image processing method, an image processing apparatus, and a recording medium are provided. Color comparing conditions for a color chart are designated, and image data are generated to print first, second and third color charts in which color patches having colors corresponding respectively to different variables of the designated color comparing conditions are disposed adjacent to each other. | 03-31-2011 |
20110080615 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - The present invention suppresses data processing load and processing time when generating density data for the same color that corresponds to a plurality of printing scans (or plurality of printing element groups) of a printing head and printing medium. In order to accomplish this, input image data is converted to a plurality of density data by referencing a three-dimensional lookup table that performs one-to-one correlation of input image data with a plurality of density data that corresponds to a plurality of relative movements (or plurality of printing element groups). By doing so, it is possible to perform a process of generating density data (CMYK) that corresponds to a plurality of relative movements (or plurality of printing element groups) from input image data at once, and thus it is possible to suppress an increase in data processing load and processing time. | 04-07-2011 |
20110109943 | OUTPUTTING GRAY COLOR VALUES IN COLOR-MANAGED CMYK TO CMYK COLOR CONVERSIONS BASED ON INPUT GRAY COLOR VALUES - Methods and systems herein provide for CMYK color conversion of input image data while preserving K color values during the conversion process. A color management module is operable to convert input image data from one color space to a CMYK color space. For example, the color management module may convert the image data of one device operating in a CMYK color space to a CMYK color space of another device. In doing so, the color management module preserves or maintains the K color values of the input image data during the CMYK to CMYK color conversion. The color management module may implement such by modifying input and output ICC profiles and interpolating the perceptual lightness values of the input ICC profile within the output lookup table. | 05-12-2011 |
20110116137 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND LOOKUP TABLE GENERATION METHOD - Using a first lookup table used to convert color data on a device-independent color space into color data on a device-dependent color space, and a second lookup table used to convert the color data on the device-dependent color space into color material data corresponding to a plurality of color print materials, the image processing apparatus acquires output values using the first lookup table in accordance with input values the number of which is larger than the number of grid points of the first lookup table, acquires output values using the second lookup table, as input values, the output values acquired, and generates a third lookup table corresponding to the predetermined number of input values which is larger than the number of grid points of the first lookup table in accordance with the output values acquired. | 05-19-2011 |
20110134487 | COLOR PROCESSING APPARATUS AND METHOD THEREOF - Color values of output colors reproduced based on output values corresponding to input values of grid points in an input color space, which are obtained by sampling a range of the output values, are estimated. Changes between a color value estimated in correspondence with an input value of a grid point of interest and color values estimated in correspondence with input values of adjacent grid points, changes between an output value of the interest point and output values of the adjacent points, and changes between a plurality of color values estimated in correspondence with input values to the interest point in association with different light sources are evaluated. When the input value of the interest point, whose a sum of evaluation values of these evaluations is less than a threshold, is obtained, an output value corresponding to that input value is set in the interest point. | 06-09-2011 |
20110255135 | IMAGE PROCESSING APPARATUS AND PROGRAM THEREFOR - In the case of a text mode, a text LUT is stored by using the number Nt | 10-20-2011 |
20120194872 | INKJET PRINTER AND IMAGE FORMING METHOD - An inkjet printer includes an image-forming part, forming an auxiliary layer on a base material by ejecting droplets of auxiliary ink and forming an image on the auxiliary layer by ejecting droplets of image-forming ink, the auxiliary ink changing a dot formation state of droplets of the image-forming ink. In a storage part, a reference table that associates each of a plurality of types of base materials with a proper dot area rate to be used when forming the auxiliary layer is stored. In a dot-area-rate determination part, a dot area rate to be used when forming the auxiliary layer on a target base material is determined as an auxiliary ink dot area rate by referencing the reference table using the type of the target base material. This enables the inkjet printer to form a highly precise image on various base materials. | 08-02-2012 |
20130003129 | METHOD FOR PROCESSING HIGH DYNAMIC RANGE IMAGES USING TONE MAPPING AND WCS COLOR TRANSFORMS - A method for processing a high dynamic range (HDR) image for printing. Tone mapping is first applied to the input image to map the colors, to find an optimized range of brightness values, and to scale the color to place colors inside the optimized range (in-range colors) into a device color space (e.g. sRGB), but without clipping colors outside of the optimized range (out-of-range colors). The scaled colors are then converted to the color space of the output device (e.g. CMYK) using WCS (Windows Color System) color transform, where the in-range colors are processed using a optimized transform and the out-of-range are processed using a sequential transform. A mapping from the original color space to the converted color space for all colors in the image is stored in a lookup table (LUT), and the input image is converted to the output image using the LUT. | 01-03-2013 |
20130038908 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - There is provided an image processing apparatus which can suppress degradation of an image quality in a recording material save mode processing and obtain an effect of consumption amount reduction of recording material desired by a user at low costs. A recording material consumption amount at the time of applying first color conversion processing unit is predicted corresponding to inputted image data. The setting of a second color conversion processing is changed from a prediction value and a target value of the recording material consumption amount. | 02-14-2013 |
20130094062 | IMAGE FORMING APPARATUS AND METHOD THEREOF - An image forming apparatus includes a user interface, and an image forming unit to perform an image forming job in a new image mode by combining two or more image modes when the two or more image modes are selected through the user interface. The image forming unit may include a controller to combine color lookup tables of the two or more selected image modes and to create a new color lookup table, and an engine unit to perform the image forming job in an image mode corresponding to the new color lookup table. Therefore, it is possible for the image forming apparatus to support various image modes. | 04-18-2013 |
20130141764 | COLOR PROCESSING APPARATUS AND METHOD THEREFOR - To generate a color separation table for an image forming apparatus which has relatively dark/light color materials with high/low relative densities, a gamut boundary for limiting the use of the relatively dark color material is set. One of relatively dark color materials is selected, and at least a grid point which satisfies a condition that the color material value of the selected relatively dark color material is nonzero and a color value to be reproduced based on color material values set to the grid point exists in a region brighter than the gamut boundary is determined. The color material value of the selected relatively dark color material set to the grid point which satisfies the condition is replaced by the color material value of the relatively light color material. | 06-06-2013 |
20130155468 | COLOR PREDICTION METHOD, COLOR CONVERSION LOOKUP TABLE GENERATION METHOD, IMAGE PROCESSING METHOD AND IMAGE PROCESSING APPARATUS - According to the present invention, even if the coloring material use amount is limited but ambiguities remain and an accurate coloring material use limit is not known, then a virtual coloring material use limit is set artificially, the color measurement values of virtual patches in a region that exceeds the coloring material use limit are inferred by extrapolation and the color measurement values in the region exceeding the coloring material use limit are predicted by interpolation using the inferred color measurement values. Therefore, it is possible to predict colors in relation to any input exceeding the coloring material use limit. | 06-20-2013 |
20130235430 | IMAGE FORMING APPARATUS, IMAGE FORMING SYSTEM AND UPDATING METHOD OF MULTI-DIMENSIONAL LUT - An image forming apparatus including an image forming unit; a color conversion unit; a storage unit which stores a mixed-color pattern including a gradation of tones of a mixed color and a reference value of each of the tones; and a control unit which forms an image of the mixed-color pattern on the sheet with the image forming unit, compares color values representing color shades for each of the tones between an observed value of the image of the mixed-color pattern formed on the sheet and the reference value of the mixed-color pattern stored in the storage unit, and determines that the multi-dimensional LUT needs to be updated and updates the multi-dimensional LUT if a difference of the color values is determined to be large on the basis of a threshold value. | 09-12-2013 |
20130265614 | IMAGE PROCESSING APPARATUS, COLOR CONVERSION METHOD AND COMPUTER READABLE MEDIUM - An image processing apparatus that performs a color conversion of a image expressed by coordinates of a multidimensional color space, including, a storage unit for storing lattice point data in the multidimensional color space, an address generating unit for generating addresses for reading from the storage unit the lattice point data in a first region and a second region in accordance with input values of a color signal, the first region being a region where values of all color components are equal to or larger than a first threshold, the second region being different from the first region, and an interpolating unit for generating a converted color signal by an interpolating process based on the read lattice point data. A lattice-point interval in the first region is narrower than a lattice-point interval in the second region. | 10-10-2013 |
20130321872 | IMAGE PROCESSING APPARATUS AND METHOD THEREFOR - Image processing is performed for an image recording apparatus which records an image by arranging, on a recording medium, dots of a plurality of types of dot structures having different arrangements of color materials to be used. A dot arrangement signal which corresponds to an input color signal and represents the arrangement of dots of the plurality of types of dot structures is generated. Image data which arranges dots of the plurality of types of dot structures on a recording medium based on the dot arrangement signal is output. | 12-05-2013 |
20140036316 | METHOD AND APPARATUS FOR SUPER RESOLUTION ENCODING - A method of designing a code book for super resolution encoding. The method includes, for example, via a processor, creating a first group of entries in the code book that includes a plurality of gray font values for encoding data; via the processor, creating a second group of entries in the code book that includes a set of values for each of the gray font values for decoding data; via the processor, creating a third group of entries in the code book that includes a pattern corresponding to each of the plurality of gray font values; and storing the code book in a database in communication with the processor. | 02-06-2014 |
20140085682 | TOTAL COLOR MATERIAL AMOUNT RESTRICTION PROFILE CREATION METHOD, TOTAL COLOR MATERIAL AMOUNT RESTRICTION PROFILE CREATION APPARATUS, IMAGE SIGNAL PROCESSING APPARATUS, IMAGE SIGNAL PROCESSING SYSTEM, AND RECORDING MEDIUM - There is provided a technique of enabling the use of a common printer profile even in a case where a configuration of a printer system is changed or added. Color data under a second configuration condition corresponding to an output color which matches or approximates an output color acquired through a first color predictor under a first configuration condition, is searched and acquired from color data subjected to total color material amount restriction processing acquired by total color material amount restriction processing using a first color material amount restriction profile under the first configuration condition, through a second color predictor under the second configuration condition. The color data searched and acquired under the second configuration condition and color data prior to total color material amount restriction processing are associated and a second total color material amount restriction profile under the second configuration condition is created. | 03-27-2014 |
20140085683 | CREATION METHOD OF TOTAL COLOR MATERIAL AMOUNT RESTRICTION TABLE, AND RECORDING MEDIUM - According to the present invention, it is possible to adequately restrict the total color material amount from the viewpoint of the second scale which substantially represents a color material amount, and sufficiently produce the color reproducibility which is potentially held by an image formation apparatus. Moreover, since the order of the CMY ratio in the space of the first scale is maintained, it is possible to smoothly secure the connection between tones. | 03-27-2014 |
20140168712 | METHOD AND SYSTEM OF EDITING MULTIPLE SPOT COLOR TABLES ASSOCIATED WITH A PRINTING SYSTEM - This disclosure provides a method and system of generating a plurality of custom spot color look-up tables, each custom spot color look-up table associated with one of a plurality of modes associated with an image marking device. In addition, provided is a job workflow method and system which accesses the plurality of custom spot color look-up tables to print a custom spot color. | 06-19-2014 |
20140247469 | STANDARDIZED MULTI-INTENT COLOR CONTROL ARCHITECTURE - A color management system includes an input device, an input processor, and a plurality of print engines. The input processor is configured to transform, using an input transformation stored on the input device, the digital image in an input source color space to a digital image in a standardized multi-color color space. A print engine processor of the print engine is configured to receive the digital image in the standardized multi-color color space from the input processor and transform, using a print engine transformation stored on the print engine, the digital image in the standardized multi-color color space to a digital image in a print engine multi-color color space. The input transformation includes a color gamut coverage at least equal to color gamut coverage of all the print engines in the color management system. | 09-04-2014 |
20140293355 | FUZZY MATCH INTERPOLATED CACHING UTILIZED IN IMAGE-PROCESSSING APPLICATIONS - Methods and systems for color conversion used in image-processing. In one approach, a caching strategy can be employed rather than a direct computation or a precomputed table. To improve the hit frequency and reduce storage requirements, a hash calculation in addition to comparison operations can be processed as a “near match” rather than an exact match. In another approach, “fuzzy match” caching can be implemented to reach the proper vicinity in the n-dimensional space, and then interpolation (or extrapolation) can refine the result. | 10-02-2014 |
20160057314 | CREATING A COLOR GAMUT LOOK-UP-TABLE - A color look-up-table (LUT) is created for use by an imaging system which uses a resource to display an image and/or provides an attribute of the image. A method of creating the LUT, comprises selecting (S | 02-25-2016 |
20160080608 | COLOR SEPARATION - A method of defining color separation for printing an image via NPacs, the method comprising: selecting a plurality of NPacs corresponding to a plurality of points within an RGB cube to provide a tessellation in RGB space translated to a valid tessellation in an NPac-related space; and defining color separation from the selected NPacs. | 03-17-2016 |
20160132757 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM - If an ink color decomposition table with a maximum ink amount, which is different from a created color decomposition table, is automatically generated using the created color decomposition table, and used for, for example, inkjet printing, the ink use amount may be excessive, leading to unevenness in glossiness. According to an embodiment of this invention, for example, in a case where an ink limit amount at each grid point of a color decomposition lookup table to be used for image processing is held, and the color decomposition lookup table is automatically generated, the ink amount of each grid point is controlled to be equal to or smaller than the limit amount. | 05-12-2016 |
20160191750 | IMAGE FORMING APPARATUS AND METHOD FOR REVISING COLOR - An image forming apparatus is provided. The image forming apparatus includes: a storage configured to store a color conversion table; an image former configured to print a compensation chart corresponding to the color conversion table; a scanner configured to scan the printed compensation chart; and a changer configured to understand a range of brightness that the image former is able to represent using the scanned compensation chart, generate a gamma curve corresponding to the understood range of brightness, and change the color conversion table based on the generated gamma curve. | 06-30-2016 |