IMAGE PROCESSING METHOD, IMAGE PROCESSOR, IMAGING DEVICE AND IMAGE PROCESSING PROGRAM

摘要

PROBLEM TO BE SOLVED: To improve brightness reproducibility of a photographic object by calculating an index quantitatively expressing a photographic scene from photographic image data, and determining an image processing condition on the basis of the calculated index.

SOLUTION: An image adjustment processing part 701 divides the photographic image data into areas each comprising combination of prescribed brightness and hue, an occupation ratio showing a ratio of the divided area to the whole photographic image data is calculated in each the divided area, and the index for specifying the photographic scene is calculated by multiplying the calculated occupation ratio in each the area by a coefficient preset according to a photographic condition. By at least multiplying an average brightness value of a flesh color area in a screen center part of the photographic image data by the coefficient preset according to the photographic condition, the index for specifying the photographic scene is further calculated. The photographic scene of the photographic image data is distinguished on the basis of the calculated indexes, and a method of gradation adjustment to the photographic image data is determined according to the distinguished photographic scene.

COPYRIGHT: (C)2006,JPO&NCIPI