A Low Complexity H.264/AVC Deblocking Filter with Simplified Filtering Boundary Strength Decision

Luong Pham VAN; Hoyoung LEE; Jaehwan KIM; Byeungwoo JEON

doi:10.1587/transfun.E96.A.562

A Low Complexity H.264/AVC Deblocking Filter with Simplified Filtering Boundary Strength Decision

Luong Pham VAN, Hoyoung LEE, Jaehwan KIM, Byeungwoo JEON

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Blocking artifacts are introduced in many block-based coding systems, and its reduction can significantly improve the subjective quality of compressed video. The H.264/AVC uses an in-loop deblocking filter to remove the blocking artifacts. The filter considers some coding conditions in its adaptive deblocking filtering such as coded block pattern (CBP), motion vector, macroblock type, etc. for inter-predicted blocks, however, it does not consider much for intra-coded blocks. In this paper, we utilize the human visual system (HVS) characteristic and the local characteristic of image blocks to modify the boundary strength (BS) of the intra-deblocking filter in order to gain improvement in the subjective quality and also to reduce the complexity in filtering intra coded slices. In addition, we propose a low-complexity deblocking method which utilizes the correlation between vertical and horizontal boundaries of a block in inter coded slices. Experimental results show that our proposed method achieves not only significant gain in the subjective quality but also some PSNR gain, and reduces the computational complexity of the deblocking filter by 36.23% on average.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E96-A No.2 pp.562-572

Publication Date: 2013/02/01

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Online ISSN: 1745-1337

DOI: 10.1587/transfun.E96.A.562

Type of Manuscript: PAPER

Category: Digital Signal Processing

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Luong Pham VAN, Hoyoung LEE, Jaehwan KIM, Byeungwoo JEON, "A Low Complexity H.264/AVC Deblocking Filter with Simplified Filtering Boundary Strength Decision" in IEICE TRANSACTIONS on Fundamentals, vol. E96-A, no. 2, pp. 562-572, February 2013, doi: 10.1587/transfun.E96.A.562.
Abstract: Blocking artifacts are introduced in many block-based coding systems, and its reduction can significantly improve the subjective quality of compressed video. The H.264/AVC uses an in-loop deblocking filter to remove the blocking artifacts. The filter considers some coding conditions in its adaptive deblocking filtering such as coded block pattern (CBP), motion vector, macroblock type, etc. for inter-predicted blocks, however, it does not consider much for intra-coded blocks. In this paper, we utilize the human visual system (HVS) characteristic and the local characteristic of image blocks to modify the boundary strength (BS) of the intra-deblocking filter in order to gain improvement in the subjective quality and also to reduce the complexity in filtering intra coded slices. In addition, we propose a low-complexity deblocking method which utilizes the correlation between vertical and horizontal boundaries of a block in inter coded slices. Experimental results show that our proposed method achieves not only significant gain in the subjective quality but also some PSNR gain, and reduces the computational complexity of the deblocking filter by 36.23% on average.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E96.A.562/_p

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@ARTICLE{e96-a_2_562,
author={Luong Pham VAN, Hoyoung LEE, Jaehwan KIM, Byeungwoo JEON, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A Low Complexity H.264/AVC Deblocking Filter with Simplified Filtering Boundary Strength Decision},
year={2013},
volume={E96-A},
number={2},
pages={562-572},
abstract={Blocking artifacts are introduced in many block-based coding systems, and its reduction can significantly improve the subjective quality of compressed video. The H.264/AVC uses an in-loop deblocking filter to remove the blocking artifacts. The filter considers some coding conditions in its adaptive deblocking filtering such as coded block pattern (CBP), motion vector, macroblock type, etc. for inter-predicted blocks, however, it does not consider much for intra-coded blocks. In this paper, we utilize the human visual system (HVS) characteristic and the local characteristic of image blocks to modify the boundary strength (BS) of the intra-deblocking filter in order to gain improvement in the subjective quality and also to reduce the complexity in filtering intra coded slices. In addition, we propose a low-complexity deblocking method which utilizes the correlation between vertical and horizontal boundaries of a block in inter coded slices. Experimental results show that our proposed method achieves not only significant gain in the subjective quality but also some PSNR gain, and reduces the computational complexity of the deblocking filter by 36.23% on average.},
keywords={},
doi={10.1587/transfun.E96.A.562},
ISSN={1745-1337},
month={February},}

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TY - JOUR
TI - A Low Complexity H.264/AVC Deblocking Filter with Simplified Filtering Boundary Strength Decision
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 562
EP - 572
AU - Luong Pham VAN
AU - Hoyoung LEE
AU - Jaehwan KIM
AU - Byeungwoo JEON
PY - 2013
DO - 10.1587/transfun.E96.A.562
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E96-A
IS - 2
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - February 2013
AB - Blocking artifacts are introduced in many block-based coding systems, and its reduction can significantly improve the subjective quality of compressed video. The H.264/AVC uses an in-loop deblocking filter to remove the blocking artifacts. The filter considers some coding conditions in its adaptive deblocking filtering such as coded block pattern (CBP), motion vector, macroblock type, etc. for inter-predicted blocks, however, it does not consider much for intra-coded blocks. In this paper, we utilize the human visual system (HVS) characteristic and the local characteristic of image blocks to modify the boundary strength (BS) of the intra-deblocking filter in order to gain improvement in the subjective quality and also to reduce the complexity in filtering intra coded slices. In addition, we propose a low-complexity deblocking method which utilizes the correlation between vertical and horizontal boundaries of a block in inter coded slices. Experimental results show that our proposed method achieves not only significant gain in the subjective quality but also some PSNR gain, and reduces the computational complexity of the deblocking filter by 36.23% on average.
ER -