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Adaptive postprocessors with DCT-based block classifications

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3 Author(s)
Chung-Bin Wu ; Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan ; Bin-Da Liu ; Jar-Ferr Yang

In this paper, we propose an adaptive postprocessor with DCT-based block classification to effectively remove blocky effect. The proposed DCT-based detection algorithms for both intra and interframes require much lower computation complexity than the spatial-domain approaches. In order to preserve the edge information, the adaptive postprocessor is also designed with a DCT-based edge detection mechanism. Simulation results show that the proposed DCT-based detection algorithms accurately classify smooth, edge, or non-smooth blocks to help the adaptive postprocessor to effectively remove the blocky effect and sharply preserve the edge information

Published in:

Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on  (Volume:5 )

Date of Conference:

2001