Macroblock-based adaptive loop filter for all intra-coding

Hyun-Ho Jo; Jung-Hak Nam; Kwang-Soo Jung; Dong-Gyu Sim; Byeong-Doo Choi

doi:10.1117/1.OE.52.3.037403

12 March 2013 Macroblock-based adaptive loop filter for all intra-coding

Hyun-Ho Jo, Jung-Hak Nam, Kwang-Soo Jung, Dong-Gyu Sim, Byeong-Doo Choi

Author Affiliations +

Optical Engineering, Vol. 52, Issue 3, 037403 (March 2013). https://doi.org/10.1117/1.OE.52.3.037403

Abstract

A macroblock-based adaptive loop filter (MBALF) to improve coding gain for all intra-coding was presented. The proposed method adaptively applies the adaptive loop filter for each reconstructed macroblock (MB) in order to reduce the blocking artifact caused by the quantization process. The MBALF can improve coding efficiency of intra-predicted MBs as it is conducted prior to intra-prediction for the subsequent MBs in a slice. We found that the proposed MBALF yields a coding gain of approximately 7.1% compared to the H.264/AVC High profile. In addition, we achieved a coding gain of approximately 8.9%, on average, by combining the conventional in-loop filter, block-based, adaptive filter control.

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Hyun-Ho Jo, Jung-Hak Nam, Kwang-Soo Jung, Dong-Gyu Sim, and Byeong-Doo Choi "Macroblock-based adaptive loop filter for all intra-coding," Optical Engineering 52(3), 037403 (12 March 2013). https://doi.org/10.1117/1.OE.52.3.037403

Published: 12 March 2013

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