Abstract: A color processing apparatus includes a first subtracting unit, a second subtracting unit, and an output unit. The first subtracting unit subtracts color values of CMY color signals corresponding to an achromatic color value from color values of input CMY color signals in accordance with replacement to the achromatic color value. The second subtracting unit subtracts color values of CMY color signals corresponding to a color value of an additional color signal different from the CMY color signals from the color values of the CMY color signals after the subtraction by the first subtracting unit in accordance with replacement to the color value of the additional color signal.

Abstract: An image processing apparatus includes a storage unit in which plural colorimetric values obtained by measuring a target-color image having a glittering characteristic from plural directions are stored for each target color; a color information receiving unit that receives color information for specifying a target color to be printed; a display controller that reads out plural colorimetric values stored corresponding to the target color of the color information from the storage unit and causes the plural colorimetric values to be displayed on a display; a change receiving unit that receives a change of the plural colorimetric values displayed on the display by the display controller; and a converter that converts the plural colorimetric values reflecting the change into color values including a value indicative of an amount of a glittering color material and a value indicative of an amount of a color material other than the glittering color material.

Abstract: An image processing apparatus includes a memory and an estimation unit. The memory stores a color conversion model representing relations between plural colorimetric values obtained by performing, in plural color measurement directions, a color measurement of plural images formed on a first sheet using plural coloring materials including a luster coloring material, and coloring-material amounts used for the images for which the color measurement is performed and the color measurement directions for which the colorimetric values are obtained. The estimation unit estimates, on the basis of a colorimetric value, of a measurement target image formed on a second sheet of a type different from a type of the first sheet, obtained in a single direction and on the basis of the color conversion model, a colorimetric value, of the measurement target image, obtained in a case of performing a color measurement in a direction other than the single direction.

Abstract: A three-dimensional data generation device includes a data division unit, a detection unit, an output command unit, and a data correction unit. The data division unit divides sectional shape data on one layer of a shaped object into mark data for shaping a mark for correction of sectional shape data on a different layer to be output as superposed on the one layer and post-removal data obtained by removing the mark data from the sectional shape data on the one layer. The detection unit detects an amount of misregistration of the mark output using the mark data from a position determined in advance. The output command unit commands output using the post-removal data so as to form the one layer of the shaped object together with the mark. The data correction unit corrects the sectional shape data on the different layer using the amount of misregistration of the detected mark.

Abstract: An image forming apparatus includes an image forming component that forms an image on a recording medium by using a white color material and a color material other than the white color material, and a controller that controls a color material amount of the white color material to differ depending on a position where an image that uses the white color material is formed in order of formation of images that use respective color materials in the image forming component.

Abstract: A color conversion device includes a receiving unit receiving colorimetric values obtained by measuring plural target-color images of different tones from plural directions; a memory storing a color conversion model associating a combination of colorimetric direction and color material amounts of respective colors and actually measured color values; and a converter converting the colorimetric values into color values including values indicative of amounts of glittering color material and other color materials, wherein the converter calculates, for each target-color image, a weighted average of color differences between colorimetric values of the target-color image in colorimetric directions and color values in the colorimetric directions obtained from the model by using preset weighting coefficients and selects a combination of weighting coefficients that makes tone characteristics closest to tone characteristics of the target-color images by changing the weighting coefficients when a combination of color mat

Abstract: An image forming apparatus includes an image forming component that forms an image on a recording medium by using a white color material and a color material other than the white color material, and a controller that controls a color material amount of the white color material to differ depending on a position where an image that uses the white color material is formed in order of formation of images that use respective color materials in the image forming component.

Abstract: An image processing apparatus includes a first converter and a second converter. The first converter converts coloring-material amounts of plural coloring materials including a luster coloring material to plural colorimetric values obtained in a case of performing, in plural color measurement directions, a color measurement of a target color image printed using the plural coloring materials. The second converter converts the plural colorimetric values obtained as a result of conversion by the first converter to display values for displaying the target color image on a display device.

Abstract: An image processing apparatus includes a storage unit in which plural colorimetric values obtained by measuring a target-color image having a glittering characteristic from plural directions are stored for each target color; a color information receiving unit that receives color information for specifying a target color to be printed; a display controller that reads out plural colorimetric values stored corresponding to the target color of the color information from the storage unit and causes the plural colorimetric values to be displayed on a display; a change receiving unit that receives a change of the plural colorimetric values displayed on the display by the display controller; and a converter that converts the plural colorimetric values reflecting the change into color values including a value indicative of an amount of a glittering color material and a value indicative of an amount of a color material other than the glittering color material.

Abstract: An image processing apparatus includes a memory and an estimation unit. The memory stores a color conversion model representing relations between plural colorimetric values obtained by performing, in plural color measurement directions, a color measurement of plural images formed on a first sheet using plural coloring materials including a luster coloring material, and coloring-material amounts used for the images for which the color measurement is performed and the color measurement directions for which the colorimetric values are obtained. The estimation unit estimates, on the basis of a colorimetric value, of a measurement target image formed on a second sheet of a type different from a type of the first sheet, obtained in a single direction and on the basis of the color conversion model, a colorimetric value, of the measurement target image, obtained in a case of performing a color measurement in a direction other than the single direction.

Abstract: A color conversion device includes a receiving unit receiving colorimetric values obtained by measuring plural target-color images of different tones from plural directions; a memory storing a color conversion model associating a combination of colorimetric direction and color material amounts of respective colors and actually measured color values; and a converter converting the colorimetric values into color values including values indicative of amounts of glittering color material and other color materials, wherein the converter calculates, for each target-color image, a weighted average of color differences between colorimetric values of the target-color image in colorimetric directions and color values in the colorimetric directions obtained from the model by using preset weighting coefficients and selects a combination of weighting coefficients that makes tone characteristics closest to tone characteristics of the target-color images by changing the weighting coefficients when a combination of color mat

Abstract: A color conversion apparatus includes an accepting unit and a converter. The accepting unit accepts plural colorimetric values obtained by measuring a target color image in plural directions. The converter converts the plural colorimetric values accepted by the accepting unit to color values including a value indicating a coloring-material amount of a luster coloring material and a value indicating a coloring-material amount of a coloring material other than the luster coloring material.

Abstract: A color processing apparatus includes a processor configured to implement first, second, and third acquiring units. The first acquiring unit acquires first color data indicating association among first-space color in a first space, second-space color obtained by reading measurement images having different first-space colors, and third-space color obtained by converting the second-space color through a predetermined transformation model. The second acquiring unit acquires second color data indicating association between the first-space color and the third-space color obtained by performing color measurement on some of the specific-color measurement images containing a specific color in the first space and included in the measurement images. The third acquiring unit acquires third color data indicating association between the first-space color and the third-space color obtained by converting the first-space color through a transformation equation obtained from the first and second color data.

Abstract: A color processing apparatus includes first, second, and third acquiring units. The first acquiring unit acquires first color data indicating association among first-space color in a first space, second-space color obtained using a reading unit reading measurement images having different first-space colors, and third-space color obtained by converting the second-space color through a predetermined transformation model. The second acquiring unit acquires second color data indicating association between the first-space color and the third-space color obtained using a measuring unit performing color measurement on some of the specific-color measurement images containing a specific color in the first space and included in the measurement images. The third acquiring unit acquires third color data indicating association between the first-space color and the third-space color obtained by converting the first-space color through a transformation equation obtained from the first and second color data.

Abstract: A three-dimensional data generation device includes a data division unit, a detection unit, an output command unit, and a data correction unit. The data division unit divides sectional shape data on one layer of a shaped object into mark data for shaping a mark for correction of sectional shape data on a different layer to be output as superposed on the one layer and post-removal data obtained by removing the mark data from the sectional shape data on the one layer. The detection unit detects an amount of misregistration of the mark output using the mark data from a position determined in advance. The output command unit commands output using the post-removal data so as to form the one layer of the shaped object together with the mark. The data correction unit corrects the sectional shape data on the different layer using the amount of misregistration of the detected mark.

Abstract: A color processing apparatus includes first, second, and third acquiring units. The first acquiring unit acquires first color data indicating association among first-space color in a first space, second-space color obtained using a reading unit reading measurement images having different first-space colors, and third-space color obtained by converting the second-space color through a predetermined transformation model. The second acquiring unit acquires second color data indicating association between the first-space color and the third-space color obtained using a measuring unit performing color measurement on some of the specific-color measurement images containing a specific color in the first space and included in the measurement images. The third acquiring unit acquires third color data indicating association between the first-space color and the third-space color obtained by converting the first-space color through a transformation equation obtained from the first and second color data.

Abstract: A correcting apparatus includes a first acquiring unit that acquires a target characteristic expressing a correspondence relationship between a gradation value and a target density of an image to be output from an output apparatus in accordance with the gradation value; a second acquiring unit that acquires an output characteristic expressing a correspondence relationship between a gradation value and a measured density of the image output from the output apparatus in accordance with the gradation value; an updating unit that updates the target characteristic by correcting the target density corresponding to a high density region including a maximum target density value when a difference between a maximum measured density value and the maximum target density value is larger than a predetermined value; and a correcting unit that corrects the gradation value so as to approximate the output characteristic to the updated target characteristic.

Abstract: A correcting apparatus includes a first acquiring unit that acquires a target characteristic expressing a correspondence relationship between a gradation value and a target density of an image to be output from an output apparatus in accordance with the gradation value; a second acquiring unit that acquires an output characteristic expressing a correspondence relationship between a gradation value and a measured density of the image output from the output apparatus in accordance with the gradation value; an updating unit that updates the target characteristic by correcting the target density corresponding to a high density region including a maximum target density value when a difference between a maximum measured density value and the maximum target density value is larger than a predetermined value; and a correcting unit that corrects the gradation value so as to approximate the output characteristic to the updated target characteristic.

Abstract: An image processing apparatus includes a calculation unit and a white layer density determination unit. The calculation unit calculates, based on multiple color component signals to be used for image formation, an image layer halftone percentage of an image layer to be formed on a recording medium. The white layer density determination unit determines, based on the image layer halftone percentage, a white layer halftone percentage of a white layer to be formed as an underlying layer of the image layer on the recording medium.

Abstract: An image forming apparatus includes an image forming unit and a controller. The image forming unit forms an image on each medium with a metallic toner. The controller controls the image forming unit such that, in the formation of an image on each medium of plural media different in reflectance, the metallic toner has a toner weight according to the medium.