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AssigneeCanon Kabushiki Kaisha
InventorsKosei Takahashi, Takeshi Makita, Osamu Yamada
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In a system for converting an input image signal input from an image input device into an output image signal to be output by an image output device, an image compression unit converts a spectral image input via an image input unit into R, G, and B data, obtains principal component data by making principal component analysis of the spectral image, and stores these data in an input image storage unit. When the principal component data and R, G, and B data are loaded and stored in an output image storage unit, a spectral reflectance reconstruction unit reconstructs the spectral reflectance of each pixel using these data. A printer model determines the dot quantities of inks used to record each pixel in an image output device on the basis of the calculated spectral reflectance, and generates an output image signal for the image output device. In this way, image data which allows to estimate the spectral reflectance characteristics of an input image is provided, and faithful color reproduction can be realized.
A color processing apparatus for calculating a color signal indicated by a plurality of color components from spectral data of an input color, said apparatus comprising:
A color processing method for calculating a color signal indicated by a plurality of color components from spectral data of an input color, said method comprising steps of:
A computer readable memory that stores a control program causing a computer execute a color processing for calculating a color signal indicated by a plurality of color components from spectral data of an input color, said processing comprising steps of:
Dependencies are inferred from the claim text.