| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem such that the most appropriate expression of conversion corresponding to real image data can not be automatically applied. <P>SOLUTION: After finding the brightness (y) of the pixels of image data by the thinning, etc., in the Step S102, the ends going inside by a prescribed distribution ratio at upper and lower ends are regarded as the ends of distribution of the brightness (Step S116). As a result, both the parameter (a) corresponding to the enlargement ratio in a range for reproducing the brightness and the parameter (b) corresponding to the quantity of offset can be obtained, and therefore, the original brightness (y) can be automatically converted into the converted brightness Y by using such a relation expression as Y=ay+b. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
