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Optical Engineering

Macroblock-based adaptive loop filter for all intra-coding
Author(s): Hyun-Ho Jo; Jung-Hak Nam; Kwang-Soo Jung; Dong-Gyu Sim; Byeong-Doo Choi
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Paper 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.

Paper Details

Date Published: 12 March 2013
PDF: 16 pages
Opt. Eng. 52(3) 037403 doi: 10.1117/1.OE.52.3.037403
Published in: Optical Engineering Volume 52, Issue 3
Show Author Affiliations
Hyun-Ho Jo, Kwangwoon Univ. (Korea, Republic of)
Jung-Hak Nam, Kwangwoon Univ. (Korea, Republic of)
Kwang-Soo Jung, Kwangwoon Univ. (Korea, Republic of)
Dong-Gyu Sim, Kwangwoon Univ. (Korea, Republic of)
Byeong-Doo Choi, Kwangwoon Univ. (Korea, Republic of)

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