| 摘要 |
There are disclosed an image processing apparatus and method, in which color image data compression-encoded in the color difference system color space is input, the input color image data is decoded, luminance component data of the decoded color image data is subjected to correction processing, and the processed luminance component data and color difference component data of the decoded color image data are encoded. There are disclosed an image processing apparatus and method, in which color image data compression-encoded in the color difference system color space is input, the input color image data is decoded, luminance component data of the decoded color image data is subjected to correction processing, and color space conversion is performed on the basis of the processed luminance component data and color difference component data of the decoded color image data. There are disclosed an image processing apparatus and method, in which color image data is input, the input color image data is converted into data in the color difference system color space, luminance component data of the converted color image data is subjected to correction processing, and the processed luminance component data and color difference component data of the converted color image data are encoded. There are disclosed an image processing apparatus and method, in which color image data is input, first component data of the color image data is subjected to first pixel density conversion processing, second component data of the color image data is subjected to second pixel density conversion processing, and the first pixel density conversion processing can attain pixel density conversion with higher quality than that of the second pixel density conversion processing.
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