Abstract: The color management module includes a first color converter color-converting color information contained in an image signal having been input according to a three-dimensional LUT; an interpolator generating a synthetic image signal by synthesizing an image signal converted by the first color converter and an image signal having been input in an arbitrary ratio; and a second color converter color-converting color information on the synthetic image signal in the HSV space and outputting the color information.

Abstract: An image sensing apparatus including an image sensor having a first area and a second area and a gradation converter for applying a gradation conversion to an image signal is provided with a gradation conversion LUT storage storing at least two kinds of gradation conversion information. The image sensing apparatus is also provided with a gradation conversion information rewriting section for rewriting the gradation conversion information into new gradation conversion information. There can be provided an image sensing apparatus capable of carrying out a precise gradation conversion even in the case that the inflection point between the first area and the second area of the image sensor constantly changes.

Abstract: An image processing method is a method for correcting both an image quality of an overall image and an image quality of a partial image with excellent balance.

Abstract: This disclosure provides printer profiling methods, apparatus and systems for determining device and gain matrix values. Specifically, a method is disclosed for generating a multidimensional printer profile look-up table (LUT) for color correction. The method includes generating an initial LUT associating a plurality of colorimetric nodes with respective initial estimates of their respective device dependent color space representations and their respective gain matrix.

Abstract: An ICC profile includes brief gloss information indicating glossy/matte attribute as attribute information, however, gloss matching cannot be performed with the 2 options. In a case where embedding of glossiness information into the ICC profile is designated, glossiness information is obtained from a color chart placed on an original plate of a color copier, and the obtained glossiness information is described in a private tag of the ICC profile.

Abstract: The presently described embodiments provide for halftone-aligned averaging and noise reduction in a calibration method and associated system. Halftone-aligned averaging is implemented, in one form, as a method of averaging in which the window over which an average is computed is a multiple of the halftone period. Noise reduction, in one illustrative embodiment, comprises discarding windows having an average outside of the range from the 5th to the 95th percentiles of all windows for a patch.

Abstract: A printing machine includes a high-speed print device configured to receive a print media and discharge a printed product that includes a printed image. An image capturing device is positioned adjacent the print device and is configured to capture an image of the printed image on the printed product. A computer includes a monitor, a processor, an input device, and a communication device configured to communicate with the print device. The monitor is configured to display the captured image, the input device is configured to allow a user to vary the displayed image, and the processor is configured to calculate an adjustment to the print device in response to the varied image.

Abstract: A system includes a transmitting unit configured to transmit an application and data related to the application from a source device to a destination device and a notifying unit configured to notify the source device of the number of times the application has been used in the destination device.

Abstract: A print processing execution apparatus includes a restriction information acquisition unit configured to acquire restriction information including processing information, a print processing execution unit configured to execute print processing based on a job, a determination unit configured to determine whether a condition for storing history information related to the job is satisfied, a storage control unit configured to store the history information in a storage unit if the determination unit determines that the condition for storing history information is satisfied, and a processing unit configured to execute processing based on the processing information included in the restriction information if the determination unit determines that the condition for storing history information is not satisfied.

Abstract: The present invention provides a color conversion device that can be applied to a color management system. The color conversion device provides a color conversion device capable of generating a color conversion table used for color reproduction with high precision. The color conversion device generates a color conversion table that describes a correspondence relationship between color data in a first color space and color data in a second color space and corrects the correspondence relationship described in the color conversion table based on calorimetric values of color sample charts obtained by the reading of a plurality of the color sample charts. The color conversion device according to the present invention can correct the output values based on the calorimetric values of the color sample charts.

Abstract: Systems and techniques for chromatic distortion reduction. Relative chromatic distortion information for an imaging system may be obtained, where the relative chromatic distortion information indicates relative displacement of a first color signal and a second color signal from a reference color signal in an image. The relative chromatic distortion information may be used to modify image data.

Abstract: A method and system for adaptive color space conversion includes a color space converter, a brightness adaptive controller and a soft clipper. The color space converter receives a first color space format signal and converts the first color space format signal into a second color space format signal. The brightness adaptive controller is connected to the color space converter in order to produce a gain and an offset based on a brightness value. The soft clipper is connected to the color space converter and the brightness adaptive controller in order to clip the second color space format signal based on the gain and the offset to thereby produce a corrected second color space format signal.

Abstract: An image processing method for forming a color conversion table to convert plural input colors into output colors, the method including the steps of: extracting color values of plural gray scales wherein in input and output characteristic data, a signal value of one color is variable and signal values of other colors are fixed; creating a model with which difference values between input and output color values are outputted by inputting the extracted color values; and estimating the output color values corresponding to the input color values to create the color conversion table to convert plural input colors into output colors, after shifting the color values by adding or subtracting the difference values which are obtained by inputting the color values into the model with respect to every output color values.

Abstract: Disclosed is a system and method for calibrating multiple printers, and particularly color printers, in a networked environment using data embedded in select color patches in target sheets generated by each printer, which embedded data allows automated processing of the target sheets and association of appropriate target sheet data with the correct printer. The embedded data preferably includes an identification of which of multiple printers a particular target sheet corresponds to, along with data about the target sheet itself.

Abstract: This disclosure provides methods, apparatus and systems for generating a profile for a printing device. Specifically, the profile is generated by selecting a GCR profile from a plurality of GCR profiles and mapping a plurality of nodes to a device dependent color space as a function of the selected GCR profiles.

Abstract: In a first embodiment, a display system comprises a display panel with 4 or more colored subpixels. The display system receives input image data specified in a first color space and outputs image data specified in a second color space. The display system further comprises a gamut mapping module for mapping the input image data specified in the first color space to image data specified in the second color space. The gamut mapping module clamps out-of-gamut colors using at least a first clamping system and a second clamping system. The first and second clamping systems yield first and second clamped values. A weighting module produces a resulting clamped value from the first and second clamped values. A final output image value is derived from the resulting clamped value. Other embodiments of the display system include pre-reduction modules and adjustable GMA modules.

Abstract: A method and system for tracking and controlling the distribution of information on a networked system. The method includes scanning at least one job on a multi-function peripheral device, sending the at least one job to a destination device, sending the at least one job to a storage remote from the destination device, and storing the at least one job in the storage. In certain embodiments, the storage is at least partially secure from a user.

Abstract: A color conversion method and apparatus for a multi-primary display (MPD) are provided with analyzing an input image to determine a transformation parameter; interpolating at least two look-up tables for color conversion according to the transformation parameter, in order to calculate a look-up table for the input image; and applying the calculated look-up table to the input image to perform the color conversion. Accordingly, it is possible to provide good color reproduction and efficiently use a color gamut of an MPD having color coordinates that are different from those of primaries of an input image.

Abstract: A display drive circuit of the invention has: an initial-color-gamut-apex-coordinate-storing unit capable of storing initial color gamut apex coordinates; a user-target-color-gamut-apex-coordinate-storing unit capable of storing user target color gamut apex coordinates; a saturation-expansion-coefficient-deciding unit for deciding expansion coefficients of saturation data based on the initial and user target color gamut apex coordinates; and an expansion unit for expanding saturations of display data based on the saturation expansion coefficients. The expansion coefficients of saturation data are decided based on the initial and user target color gamut apex coordinates, and saturations of display data are expanded according to the expansion coefficients. Thus, the degree of expanding the saturations can be controlled for each color gamut or each of R, G and B color properties of an LC display panel.

Abstract: A color data setting unit that sets a plurality of sets of fifth color data that are defined in a first color space in one to one correspondence with a plurality of fourth color data sets. An identifying unit identifies some of first reference points, that are in proximity to the fifth color data set for each of second reference points. A calculation unit calculates, for each of all the second reference points, color differences between the fifth color data set for the each second reference point and the some of the first reference points. A determining unit determines, for each of the first reference points, a single fifth color data set that has the smallest color difference among all the color differences that are calculated with respect to the each of the first reference points. A registering unit registers, at each of the first reference points, the fourth color data set that is set in correspondence with the single fifth color data sets.

Abstract: A color gamut data creating device includes a locating unit, and an extracting unit. The locating unit locates characteristic points based on the measurement points on a target plane. The extracting unit extracts at least three vertices of a color gamut from among the characteristic points. The at least three vertices satisfy the conditions that a first point, which is any one of the at least three vertices, is located within a reference distance from a second point adjacent to the first point from among the at least three vertices, and that all cross products that are calculated by a vector from the first point to the second point and vectors from the first point to any characteristic points that are located within the reference distance from the first point have the same sign.

Abstract: A method of operating a color printer including using a first set of one-dimensional TRCs or a second set of one-dimensional TRCs with a single set of color tables.

Abstract: A color processing apparatus includes an image signal acquisition section, a color conversion matrix storage section, a matrix regularization processing section and a normal color conversion section. The image signal acquisition section acquires an image signal containing a predetermined input color signal. The color conversion matrix storage section stores information of a color conversion matrix which associates the input color signal and an output color signal with each other. The matrix regularization processing section reads the information of the color conversion matrix from the color conversion matrix storage section and converts the color conversion matrix into a nonsingular matrix. The normal color conversion section converts the input color signal acquired by the image signal acquisition section into an output color signal using the nonsingular matrix.

Abstract: A method and apparatus that outputs an optimally-converted image using predefined data and color characteristics. The method includes: receiving the color characteristics; converting the received color characteristics into a range of lightness; converting the range of lightness and the received color characteristics into a gamut of lightness and chroma to be represented by the printer; and adaptively outputting the image according to the converted range of lightness and the received color characteristics.

Abstract: A color space conversion apparatus and a method of controlling the same, the color space conversion apparatus including: a first color space conversion unit to convert a first color space into a first Lab color space; a second color space conversion unit to convert a second color space into a second Lab color space; a spherical color space conversion unit to expand the first and second Lab color spaces into a spherical color space; and a spherical gamut mapping unit to perform gamut mapping between the first and second color spaces through spherical parametrization, thus avoiding problems in color reproduction caused by the lack of one-to-one correspondence between Lab color space values of the input and output devices.

Abstract: A color document is scanned using sensors of two color components, and monochrome image data is generated by performing a color conversion process on color image data made up of two color components obtained through the scanning.

Abstract: An output device which outputs pixel data corresponding to a color material used by a printing unit to the printing unit includes an image buffer which stores image data, a generation unit which generates density data corresponding to the color material based on image data read out from the image buffer, a print buffer which stores density data generated by the generation unit, and a conversion unit which converts density data read out from the print buffer into pixel data corresponding to the resolution of the printing unit synchronously with the printing unit.

Abstract: A print control device that controls a printing process using registered color conversion information includes: a generating unit that, when a user edits the registered color conversion information, adds access authority information indicating that the color conversion information is user color conversion information used by only a predetermined user or common color conversion information that can be used by all users to the color conversion information to generate new edited color conversion information; and a registration unit that determines whether the edited color conversion information generated by the generating unit can be registered and whether the edited color conversion information is registered as the user color conversion information or the common color conversion information, on the basis of the access authority information and the registration state of the color conversion information, and registers the edited color conversion information on the basis of the determination result.

Abstract: Each of a plurality of polyhedron spaces is defined by a plurality of first vertices. Each of the plurality of first vertices is defined by a plurality of sets of third color data that are defined in the second color space. A color data setting unit sets a plurality of sets of fourth color data that are defined in a first color space in one to one correspondence with the plurality of third color data sets. A second dividing unit divides each of a plurality of polyhedron spaces into a plurality of smaller polyhedron spaces by a division number set for the each polyhedron spaces. Each of the plurality of smaller polyhedron spaces is defined by a plurality of second vertices and the plurality of first vertices. Each of the plurality of second vertices is defined by a plurality of sets of fifth color data defined in the second color space.

Abstract: A method for setting a color conversion condition for use in an image forming device. The image forming device includes: a first color conversion unit that converts input image data into first output image data by using a first three-dimensional LUT; and second-first, second-second and second-third color conversion units for sequentially converting the input image data into intermediate image data ? and ? by using at least one LUT. The method includes: setting, in a form of values expressing a color conversion relationship on a second three-dimensional LUT, a relationship between the intermediate image data ? and the intermediate image data ? to ensure that first colorimetric data of an image formed on the basis of the first output image data is equal to third colorimetric data of an image that is formed on the basis of image data obtained by sequentially converting the same input image data.

Abstract: A color conversion apparatus is for converting an input point defined in a three-dimensional first color space into an output point defined in a three-dimensional second color space. The color conversion apparatus includes: a position identifying unit; a first conversion unit; a second conversion unit; and an output point identifying unit. The position identifying unit identifies a two-dimensional position for the input point, the two-dimensional position being defined on a specific plane passing through a first white point, a first black point and the input point, the first white point and the first black point being defined in the first color space. The first conversion unit converts the input point into an intermediate point that is defined in a device-independent color space. The second conversion unit converts the intermediate point into a temporary output point that is defined in the three-dimensional second color space.

Abstract: Differences in color appearance due to the individual differences in color matching functions are corrected. Hence, a spectral data obtaining unit inputs spectral image data. A color matching function setting unit sets personal color matching functions. A referential color matching function setting unit sets referential color matching functions. A spectral image correction unit corrects the spectral image data based on the personal color matching functions and the referential color matching functions.

Abstract: Aspects of the disclosure provide a printing method that can determine a configuration of a printing system based on contents of a printing job to achieve an optimum image quality for the printing job. Further, the configuration can be provided to a configuration update mechanism via a communication method. The printing method can include storing a plurality of printing configurations for at least one printer, analyzing a printing job to determine printing characteristics, rating the plurality of printing configurations based on printing abilities of the plurality of printing configurations corresponding to the printing characteristics, and selecting a printing configuration based on the rating.

Abstract: An International Color Consortium (ICC) profile making tool includes a regression module to establish a dependency between a profile connection space (PCS) and a device color space and an optimization module to generate a first output profile based on an ink minimization mode and a second output profile based on a high accuracy mode.

Abstract: A converting unit converts a first color signal into a second color signal and a third color signal. A first correcting unit corrects a magnitude relation between hue angles of the third color signal such that a magnitude relation between hue angles of the second color signal corresponding to the first color signal is maintained in the hue angles of the third color signal. The first color signal is a device-dependent input red, green, blue color signal. The second color signal is a color signal of a hue, lightness, saturation color space. The third color signal is a color signal of CIECAM02 color space.

Abstract: A color processing apparatus includes a storage section, a normalizing section and a tone correction section. The storage section stores tone correction information used in tone correction for a color signal to be corrected. The normalizing section reads the tone correction information from the storage section and normalizes the read tone correction information in accordance with the color signal to be corrected to generate normalized tone correction information. The tone correction section converts the color signal to be corrected into a corrected color signal using the normalized tone correction information.

Abstract: An image processing apparatus is provided. The image processing apparatus includes: an acquiring unit that acquires original image data and a first color conversion profile associated with the original image data; an editing unit that edits the original image data by using the first color conversion profile to generate edited image data; a preparing unit that prepares a second color conversion profile different from the first color conversion profile in a first case where the editing unit generates the edited image data having a data size smaller than that of the original image data, wherein a data size of the second color conversion profile is smaller than that of the first color conversion profile; and a storage control unit that, in the first case, stores the edited image data and the second color conversion profile in a memory while being associated with each other.

Abstract: Mapping spectral colors in an Interim Connection Space (ICS) of a full spectral space based on an objective function is provided. A spectral color value in the ICS is accessed, and a spectral gamut boundary of the destination gamut is accessed. The spectral color value is mapped into mapped spectral color value based on minimization of an objective function of coordinates of a first subspace of the ICS, by fixing coordinates of a second subspace of the ICS, subject to a constraint that a result is within the spectral gamut boundary. The first subspace is a null space of a transformation from the ICS to a color space, while the second subspace is an orthogonal complement of the first subspace in the ICS. The constraint is determined by a gamut section that is an intersection of the spectral gamut in the ICS and an affine subspace characterized by the fixed coordinates of the second subspace.

Abstract: In a method of mapping data from a source space to a target space, a space transformation look-up table (LUT) that contains a plurality of locations storing information is maintained, wherein each of the plurality of locations includes information specifying a function to be evaluated. First data defined according to a multi-dimensional source space is input, and second data defined according to a multi-dimensional target space is generated, by applying information contained in the LUT to the first data.

Abstract: A recording apparatus has a buffer for dividing a storage area into a plurality of areas in a scanning direction of a recording head to record data by allowing a carriage loaded with the recording head to scan data on a record medium, and storing the divided image data in a divided area unit, and includes: a write control unit for controlling write address information about image data in the area unit for data of each color for storage of the image data divided in an area unit in the buffer; a read control unit for controlling for data of each color read address information for a read of image data stored in the buffer; and a record data generation unit for generating record data in a unit of the divided area based on the read image data according to the read address information.

Abstract: A method for correcting color characteristics of a flat panel display comprises the steps of using a signal generating device to generate an input signal to the display and a color measurement instrument to measure color displayed by the display to obtain an output value; obtaining corrected color characteristic values necessary for the display to display a target output value Txyz through the relation of an inverse function RGB=f?1(XYZ) between the input signal RGB and output value XYZ, and storing the corrected color characteristic values and an identification code of the display into a storage medium. The corrected color characteristic values are downloaded to a hard disk of a computer from the storage medium according to the identification code; and the computer uses a driver of the display to activate the flat panel display to display a corrected color according to the corrected color characteristic values.

Abstract: A display color correcting method is provided. A first plurality of input color values are provided to a display, wherein the input color values correspond to a plurality of vertices of a plurality of cubes within a cubic color space of the display. Each cube has two vertices arranged along a gray diagonal of the cubic color space. A response value is measured for each of the color values and a first plurality of calibration values is determined, the calibration values corresponding to the first plurality of input color values. A second plurality of calibration values corresponding to a second plurality of input color values is determined by interpolating the first plurality of calibration values.

Abstract: An information processing device to generate data pertaining to a document from electronic paper which has a display section to display and retain the document, and a memory to store document identification data, includes a document data storage unit which stores document electronic data, a communication unit which acquires document identification data from the electronic paper, a reading unit which scans the display section, a data extraction unit which extracts from the document data storage unit document electronic data corresponding to the document identification data, a difference processing unit which extracts a note image appended on a surface of the display section according to a difference between an image from the extracted document electronic data and an image of the scanned display section, and a data generation unit which associates data of the extracted appendix image and the extracted document electronic data, thereby generates data pertaining to the document.

Abstract: 4+ color management sequentially processes four colors at a time from among the 4+ colors to leverage solution capability using a 4-color management tools. In methods and apparatus for processing 4+ colors, received information of 4+ colors may be processed in a first stage using four colors of the 4+ colors, such as CMYO. The processed four colors are then mapped into three virtual colors. The mapped three virtual colors and one additional unprocessed color of the 4+ colors are then processed in a second stage using a 4-color tool. From this, a second color model of at least five colors (4+) is generated. The resulting four colors determine five printer colors, and are then mapped into three virtual colors. The mapped three virtual colors and one additional unprocessed color of the 4+ colors are then processed in a third stage using a 4-color tool. From this, a third color model of at least five colors (4+) is generated.

Abstract: A color conversion device is provided including: a setting unit that sets a conversion mode, based on characteristics of a source color region related to an input image signal in a color space, for converting the input image signal to an image signal that falls within at least one color region from a plurality of color regions that have been defined in the color space; and a conversion unit that converts the input image signal in accordance with the conversion mode into the image signal that falls within the color region.

Abstract: Disclosed herein is a method wherein each pixel is tagged with a special VI (Variable Information) flag, which indicates the color of the pixel is variable or fixed. When the document gets created during raster image processing (“ripping”), the output CMYK of the VI and non-VI pixels are constrained to be odd and even numbers, respectively. In the meantime, a special TRC is created, and the VI colors are obtained through this special TRC at the odd indices, while the non-VI colors are obtained through the even indices. To enable the variable colorization printing, the job needs to be ripped once and saved. The saved job then can be reprinted multiple times with different TRCs that have the same values at the even indices, but different values at the odd indices.

Abstract: An image forming system includes: a resource information storage unit that previously stores resource information to be combined with input print information; a first setting unit that sets an image characteristic of the resource information stored in the resource information storage unit; a second setting unit that sets an image characteristic of the input print information; and a color conversion unit that, when the image characteristic set by the first setting unit and the image characteristic set by the second setting unit are different, performs color conversion on the resource information based on the image characteristic set by the first setting unit, and performs color conversion on the print information based on the image characteristic set by the second setting unit.

Abstract: An image forming apparatus that forms a color image includes: a sensor that detects a density of an image formed on the transfer body; a density adjusting unit that forms a density test pattern on a transfer body and that adjusts process parameters such that a density of the density test pattern on the transfer body falls within a predetermined range of a reference density; and a gradation adjusting unit that forms a gradation test pattern on the transfer body and updates the gradation correction data such that a density for every gradation of the gradation test pattern on the transfer body falls within a predetermined range of a reference gradation density acquired and stored beforehand. The gradation adjusting unit updates the gradation correction data subsequently after the density adjusting unit adjusts the density of the density test pattern.

Abstract: An image processing apparatus, program product, and method determine an achievable gamut achievable by the imaging engine or engines for all spatial locations of an output image, or all utilized print engines. A reference gamut is calculated which is any gamut containing the achievable gamut. A gamut mapping is used to map gamuts from the mean gamut to the achievable gamut, and a set of transformations is calculated for each of a set of input colors to a set of target colors selected from colors in the achievable gamut. Values for a received digital image are transformed for each image pixel or clusters of pixels based on the calculated set of transformations. Output images are generated based on the transformed values.

Abstract: Since many ICC profile generation tools print and measure a large number of color patches and then make profile generation calculations, profile re-generation requires a long time. Hence, patch data are generated, calorimetric values corresponding to the patch data are obtained. Reference values of an Lab color space, which correspond to the patch data, are calculated using a conversion lookup table from a CMYK color space to the Lab color space, which is included in a profile. A conversion lookup table from the Lab color space to the CMYK color space, which is included in the profile, is updated using the calorimetric values and reference values.