TONE CORRECTING APPARATUS, TONE CORRECTING METHOD, AND RECORDING MEDIUM FOR RECORDING THE TONE CORRECTING PROGRAM

摘要

Features of the parts in the image makes it possible to run a more appropriate tone correction is reflected precisely. Each of the input image 100 is divided by a plurality of block regions 101 as a first key determining region (A) executing a first key determination and the brightness of the area is determined by the level of the multiple steps. Also run the second key determining a plurality of block regions 101 which are adjacent to the first key determining region (A) and around a second key determining region (B), and by the brightness of the area to the level of the plurality of stages checked. Further, if each of the block regions 101 of the brightness levels of the first and second levels of the brightness levels in which a plurality of detailed steps than the brightness level is determined by the key determination, the first and the second key determination for both executes the third key determination to determine from a combination of the determination result. The individually correcting the brightness of the pixels of the input image 100 on the basis of the brightness level of each of the block regions 101 is determined in the third key determination.