Patent ID: 7796159
Filing Date: 2010-09-14
Classification: G06T,H04N

Abstract:
1. An image correction device for correcting image degradation resulting from camera shake comprising: a difference value determination device which computes window region local difference values for a plurality of neighboring pixels, each of the window region local difference values being a difference value between image data of a notice pixel in a difference value determination region formed of a whole or a part of a screen area of an input image and image data of a neighboring pixel in a window region set around the notice pixel, and determines a maximum local difference value which is a maximum value of the window region local difference values in each window region; an input image evaluation device which determines a threshold value reflecting a characteristic of the input image in accordance with the maximum local difference value; a filter coefficient production device which produces adaptive filter coefficients for respective pixels of the input image by using the threshold value, the adaptive filter coefficients having an effect of high-pass filtering on the image; and a filter processing device which performs filter processing of the input image by using the adaptive filter coefficients.