Patent ID: 7907789
Filing Date: 2011-03-15
Classification: H04N

Abstract:
1. A method of processing block-based image information, the block-base image information comprising a plurality of image blocks in which each image block comprises a plurality of pixels and in which each of the plurality of image blocks comprises a plurality of sub-blocks, said method comprising: up sample filtering pixels located along boundaries of the plurality of image blocks using a a Kaiser-Bessel window function low pass filter with filter tap coefficients [1, −5, 20, 20, −5, 1]/32 and a beta factor of 3.1; up sample filtering pixels located along boundaries of the plurality of sub-blocks using a Kaiser-Bessel window function low pass filter with filter tap coefficients [−3, 19, 19, −3]/32 and a beta factor of 2.75; and up sample filtering pixels other than those located along boundaries of the image blocks and the sub-blocks using a Kaiser-Bessel window function low pass filter with filter tap coefficients [0, 16, 16, 0]/32 and a beta factor of 10.