Patent ID: 6320981
Filing Date: 2001-11-20
Classification: G06T,H04N

Abstract:
An image processing system for assigning any one of block representative values to approximate image data to the image data corresponding to each of pixels making up an input image and then coding the image data in units of block images made up of the pixels, said image processing system comprising:frequency distribution detection means for detecting a frequency distribution of image data input for each of the block images;feature amount calculation means for calculating a feature amount concerning a distribution state of an area in the proximity of a distribution range end in the detected frequency distribution;determination means for determining whether or not the block representative values are to be set from the frequency distribution of the area in the proximity of the distribution range end based on the calculated feature amount; andrepresentative value setting means for setting the block representative values based on the detected frequency distribution in response to the determination result of said determination means.