| 摘要 |
<P>PROBLEM TO BE SOLVED: To perform tone correction processing to an image data with high definition, while suppressing an increase of necessary memory capacity. <P>SOLUTION: An image processor 13 includes a tone corrector 133 for performing tone correction. The tone corrector 133 performs the tone correction by reading out a one-dimensional lookup table from a parameter data set DS1 stored in a library 135. The above one-dimensional lookup table retains data in a state of being thinned out in a specific tone area having a small tone variation. The one-dimensional lookup table has an output tone value of 8 bits in the specific tone area, as compared to the output tone value in the other tone area having the number of tones of 10 bits. Further, in the specific tone area, the output tone value is configured to have varied values for every four steps. <P>COPYRIGHT: (C)2007,JPO&INPIT |
