Patent ID: 8135232
Filing Date: 2012-03-13
Classification: H04N

Abstract:
1. An image evaluation apparatus comprising: a block setting unit that sets a block, which has a predetermined size, in an input image; a difference evaluation unit that evaluates a gradation difference of the input image based on the block set by the block setting unit; a control unit that controls the block setting unit and the difference evaluation unit so as to evaluate the gradation difference of the input image with respect to plural types of blocks, which are different in phases in the image or in size; and an evaluation value generating unit, wherein the difference evaluation unit includes the evaluation value generating unit generates an evaluation value, regarding the gradation difference, of the input image based on (i) the gradation differences, which are evaluated by the difference evaluation unit with respect to the respective plural types of blocks, and (ii) the amounts of block distortion, which are evaluated with respect to the respective plural types of blocks.