Estimation of block artifact strength based on edge statistics

Details Estimation of block artifact strength based on edge statistics Estimation of block artifact strength based on edge statistics

2011-03-22

2011-03-22

Harold, Jefferey F (Department: 2422)

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

C348S701000, C348S420100, C375S240270, C375S240290, C382S268000

Reexamination Certificate

active

07911538

ABSTRACT:
A method and apparatus estimates the strength of block artifacts in compressed video is described. Block artifacts are associated with the block-based image/video compression schemes. The block artifacts deteriorate the quality of compressed image and video, especially at low bit rates. A deblocking method measures the strength of the block artifacts at each block boundary and adjusts the deblocking parameters accordingly to improve the performance of the overall deblocking process. A method and device to measure the strength of block artifacts based on the global and local edge information of the current picture is provided.

REFERENCES:
patent: 2005/0013494 (2005-01-01), Srinivasan et al.
patent: 2007/0058726 (2007-03-01), Ha et al.
patent: 2007/0206871 (2007-09-01), Jalil et al.

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