Patent ID: 8145006
Filing Date: 2012-03-27
Classification: G06T,H04N

Abstract:
1. An image processing apparatus comprising: a processor configured to function as: a decoder configured to decode an encoded image to obtain a decoded image; an acquisition module configured to acquire quantization information indicating accuracy of quantization upon generating the encoded image; a sharpening module configured to perform sharpening on the decoded image; a detector configured to detect a frequency histogram indicating existing pixels corresponding to each frequency component of the decoded image with respect to the decoded image; and a controller configured to control effect of the sharpening based on the quantization information such that the effect of the sharpening is reduced as the accuracy decreases, and to control the effect of the sharpening such that the effect of the sharpening is reduced for a decoded image containing a larger number of high-frequency component pixels based on the frequency histogram.