| 摘要 |
PROBLEM TO BE SOLVED: To prevent discontinuity in color conversion due to a color conversion table. SOLUTION: A data-detecting unit 201 detects pixels, having a pixel value near a grid point value of the color conversion table from a source image, represented by an N-dimensional first color space. A data-comparing unit 202 acquires differences in signal values in the first color space and differences for each dimension, between the pixel values of the pixels detected by the unit 201 and and the pixel values of corresponding pixels in a corresponding image. When the acquired difference in the signal value exceeds a predetermined value, a data limit unit 203 adjusts the difference for each dimension so that the changing amount, from the input value to the output value in the color conversion, using the color conversion table does not exceed the predetermined value. A table-creating unit 204 decides each grid point value of an N-dimensional color conversion table, on the basis of the differences for each dimension which are adjusted, as necessary. COPYRIGHT: (C)2004,JPO
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