| 摘要 |
PROBLEM TO BE SOLVED: To prevent a high saturation color from saturating, when the dynamic range of an image is compressed. SOLUTION: An image analyzing part 2 analyzes an image S0 and sets a dynamic range compression rate P0. Also, the image analyzing part 20 calculates the saturation of each pixel of the image S0 and counts the number of pixels of high saturation pixels, whose saturation is equal to or greater than a prescribed threshold. When the number of pixels of the high saturation pixels is greater than the prescribed threshold, the set dynamic range compression rate P0 is made weak and a new dynamic range compression rate P1 is set. A compression table generating part 3 generates a compression table T0, on the basis of the dynamic range compression rates P0 and P1, and a compression processing part 4 compresses the dynamic range of the image S0 according to the compression table T0, to obtain processed image data S1. An image output part 5 prints out the processed image data S1. COPYRIGHT: (C)2005,JPO&NCIPI |
