| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that when trying to obtain a contrast emphasized image for weak-contrast image data, the most suitable transformation formula corresponding to real image data cannot be automatically applied. <P>SOLUTION: Transformation destination luminance Y can be automatically converted with respect to transformation source luminance (y) by utilizing a relational expression of Y=ay+b, etc., because it becomes possible to obtain a parameter (a) corresponding to magnification within a range capable of reproducing luminance and a parameter (b) corresponding to an offset quantity by calculating the luminance (y) about pixels of image data while performing thinning-out processing or the like in a step S102 and subsequently regarding ends that come inward at upper and lower ends by a prescribed distribution ratio as the end of a corresponding luminance distribution (step S116). <P>COPYRIGHT: (C)2008,JPO&INPIT |
