Prefiltering and Postfiltering Based on Global Motion Compensation for Improving Coding Efficiency in H.264 and HEVC Codecs

Ho Hyeong RYU; Kwang Yeon CHOI; Byung Cheol SONG

doi:10.1587/transinf.2016EDP7273

Prefiltering and Postfiltering Based on Global Motion Compensation for Improving Coding Efficiency in H.264 and HEVC Codecs

Ho Hyeong RYU, Kwang Yeon CHOI, Byung Cheol SONG

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In this paper, we propose a filtering approach based on global motion estimation (GME) and global motion compensation (GMC) for pre- and postprocessing of video codecs. For preprocessing a video codec, group of pictures (GOP), which is a basic unit for GMC, and reference frames are first defined for an input video sequence. Next, GME and GMC are sequentially performed for every frame in each GOP. Finally, a block-based adaptive temporal filter is applied between the GMC frames before video encoding. For postprocessing a video codec at the decoder end, every decoded frame is inversely motion-compensated using the transmitted global motion information. The holes generated during inverse motion compensation can be filled with the reference frames. The experimental results show that the proposed algorithm provides higher Bjontegaard-delta peak signal-to-noise ratios (BD-PSNRs) of 0.63 and 0.57 dB on an average compared with conventional H.264 and HEVC platforms, respectively.

Publication: IEICE TRANSACTIONS on Information Vol.E100-D No.1 pp.160-165

Publication Date: 2017/01/01

Publicized: 2016/10/07

Online ISSN: 1745-1361

DOI: 10.1587/transinf.2016EDP7273

Type of Manuscript: PAPER

Category: Image Processing and Video Processing

Authors

Ho Hyeong RYU
  Inha University
Kwang Yeon CHOI
  Inha University
Byung Cheol SONG
  Inha University

Keyword

global motion, rotation motion, zoom motion, CODEC, temporal filter

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Ho Hyeong RYU, Kwang Yeon CHOI, Byung Cheol SONG, "Prefiltering and Postfiltering Based on Global Motion Compensation for Improving Coding Efficiency in H.264 and HEVC Codecs" in IEICE TRANSACTIONS on Information, vol. E100-D, no. 1, pp. 160-165, January 2017, doi: 10.1587/transinf.2016EDP7273.
Abstract: In this paper, we propose a filtering approach based on global motion estimation (GME) and global motion compensation (GMC) for pre- and postprocessing of video codecs. For preprocessing a video codec, group of pictures (GOP), which is a basic unit for GMC, and reference frames are first defined for an input video sequence. Next, GME and GMC are sequentially performed for every frame in each GOP. Finally, a block-based adaptive temporal filter is applied between the GMC frames before video encoding. For postprocessing a video codec at the decoder end, every decoded frame is inversely motion-compensated using the transmitted global motion information. The holes generated during inverse motion compensation can be filled with the reference frames. The experimental results show that the proposed algorithm provides higher Bjontegaard-delta peak signal-to-noise ratios (BD-PSNRs) of 0.63 and 0.57 dB on an average compared with conventional H.264 and HEVC platforms, respectively.
URL: https://globals.ieice.org/en_transactions/information/10.1587/transinf.2016EDP7273/_p

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@ARTICLE{e100-d_1_160,
author={Ho Hyeong RYU, Kwang Yeon CHOI, Byung Cheol SONG, },
journal={IEICE TRANSACTIONS on Information},
title={Prefiltering and Postfiltering Based on Global Motion Compensation for Improving Coding Efficiency in H.264 and HEVC Codecs},
year={2017},
volume={E100-D},
number={1},
pages={160-165},
abstract={In this paper, we propose a filtering approach based on global motion estimation (GME) and global motion compensation (GMC) for pre- and postprocessing of video codecs. For preprocessing a video codec, group of pictures (GOP), which is a basic unit for GMC, and reference frames are first defined for an input video sequence. Next, GME and GMC are sequentially performed for every frame in each GOP. Finally, a block-based adaptive temporal filter is applied between the GMC frames before video encoding. For postprocessing a video codec at the decoder end, every decoded frame is inversely motion-compensated using the transmitted global motion information. The holes generated during inverse motion compensation can be filled with the reference frames. The experimental results show that the proposed algorithm provides higher Bjontegaard-delta peak signal-to-noise ratios (BD-PSNRs) of 0.63 and 0.57 dB on an average compared with conventional H.264 and HEVC platforms, respectively.},
keywords={},
doi={10.1587/transinf.2016EDP7273},
ISSN={1745-1361},
month={January},}

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TY - JOUR
TI - Prefiltering and Postfiltering Based on Global Motion Compensation for Improving Coding Efficiency in H.264 and HEVC Codecs
T2 - IEICE TRANSACTIONS on Information
SP - 160
EP - 165
AU - Ho Hyeong RYU
AU - Kwang Yeon CHOI
AU - Byung Cheol SONG
PY - 2017
DO - 10.1587/transinf.2016EDP7273
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E100-D
IS - 1
JA - IEICE TRANSACTIONS on Information
Y1 - January 2017
AB - In this paper, we propose a filtering approach based on global motion estimation (GME) and global motion compensation (GMC) for pre- and postprocessing of video codecs. For preprocessing a video codec, group of pictures (GOP), which is a basic unit for GMC, and reference frames are first defined for an input video sequence. Next, GME and GMC are sequentially performed for every frame in each GOP. Finally, a block-based adaptive temporal filter is applied between the GMC frames before video encoding. For postprocessing a video codec at the decoder end, every decoded frame is inversely motion-compensated using the transmitted global motion information. The holes generated during inverse motion compensation can be filled with the reference frames. The experimental results show that the proposed algorithm provides higher Bjontegaard-delta peak signal-to-noise ratios (BD-PSNRs) of 0.63 and 0.57 dB on an average compared with conventional H.264 and HEVC platforms, respectively.
ER -