IEICE TRANSACTIONS on Information
A Foreground-Background-Based CTU λ Decision Algorithm for HEVC Rate Control of Surveillance Videos
Summary :
Although HEVC rate control can achieve high coding efficiency, it still does not fully utilize the special characteristics of surveillance videos, which typically have a moving foreground and relatively static background. For surveillance videos, it is usually necessary to provide a better coding quality of the moving foreground. In this paper, a foreground-background CTU λ separate decision scheme is proposed. First, low-complexity pixel-based segmentation is presented to obtain the foreground and the background. Second, the rate distortion (RD) characteristics of the foreground and the background are explored. With the rate distortion optimization (RDO) process, the average CTU λ value of the foreground or the background should be equal to the frame λ. Then, a separate optimal CTU λ decision is proposed with a separate λ clipping method. Finally, a separate updating process is used to obtain reasonable parameters for the foreground and the background. The experimental results show that the quality of the foreground is improved by 0.30 dB in the random access configuration and 0.45 dB in the low delay configuration without degradation of either the rate control accuracy or whole frame quality.
- Publication
- IEICE TRANSACTIONS on Information Vol.E102-D No.3 pp.670-674
- Publication Date
- 2019/03/01
- Publicized
- 2018/12/18
- Online ISSN
- 1745-1361
- DOI
- 10.1587/transinf.2018EDL8159
- Type of Manuscript
- LETTER
- Category
- Image Processing and Video Processing
Authors
Zhenglong YANG
Shanghai University of Engineering Science
Guozhong WANG
Shanghai University of Engineering Science
GuoWei TENG
Shanghai University
Keyword
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Zhenglong YANG, Guozhong WANG, GuoWei TENG, "A Foreground-Background-Based CTU λ Decision Algorithm for HEVC Rate Control of Surveillance Videos" in IEICE TRANSACTIONS on Information,
vol. E102-D, no. 3, pp. 670-674, March 2019, doi: 10.1587/transinf.2018EDL8159.
Abstract: Although HEVC rate control can achieve high coding efficiency, it still does not fully utilize the special characteristics of surveillance videos, which typically have a moving foreground and relatively static background. For surveillance videos, it is usually necessary to provide a better coding quality of the moving foreground. In this paper, a foreground-background CTU λ separate decision scheme is proposed. First, low-complexity pixel-based segmentation is presented to obtain the foreground and the background. Second, the rate distortion (RD) characteristics of the foreground and the background are explored. With the rate distortion optimization (RDO) process, the average CTU λ value of the foreground or the background should be equal to the frame λ. Then, a separate optimal CTU λ decision is proposed with a separate λ clipping method. Finally, a separate updating process is used to obtain reasonable parameters for the foreground and the background. The experimental results show that the quality of the foreground is improved by 0.30 dB in the random access configuration and 0.45 dB in the low delay configuration without degradation of either the rate control accuracy or whole frame quality.
URL: https://global.ieice.org/en_transactions/information/10.1587/transinf.2018EDL8159/_p
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@ARTICLE{e102-d_3_670,
author={Zhenglong YANG, Guozhong WANG, GuoWei TENG, },
journal={IEICE TRANSACTIONS on Information},
title={A Foreground-Background-Based CTU λ Decision Algorithm for HEVC Rate Control of Surveillance Videos},
year={2019},
volume={E102-D},
number={3},
pages={670-674},
abstract={Although HEVC rate control can achieve high coding efficiency, it still does not fully utilize the special characteristics of surveillance videos, which typically have a moving foreground and relatively static background. For surveillance videos, it is usually necessary to provide a better coding quality of the moving foreground. In this paper, a foreground-background CTU λ separate decision scheme is proposed. First, low-complexity pixel-based segmentation is presented to obtain the foreground and the background. Second, the rate distortion (RD) characteristics of the foreground and the background are explored. With the rate distortion optimization (RDO) process, the average CTU λ value of the foreground or the background should be equal to the frame λ. Then, a separate optimal CTU λ decision is proposed with a separate λ clipping method. Finally, a separate updating process is used to obtain reasonable parameters for the foreground and the background. The experimental results show that the quality of the foreground is improved by 0.30 dB in the random access configuration and 0.45 dB in the low delay configuration without degradation of either the rate control accuracy or whole frame quality.},
keywords={},
doi={10.1587/transinf.2018EDL8159},
ISSN={1745-1361},
month={March},}
Copy
TY - JOUR
TI - A Foreground-Background-Based CTU λ Decision Algorithm for HEVC Rate Control of Surveillance Videos
T2 - IEICE TRANSACTIONS on Information
SP - 670
EP - 674
AU - Zhenglong YANG
AU - Guozhong WANG
AU - GuoWei TENG
PY - 2019
DO - 10.1587/transinf.2018EDL8159
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E102-D
IS - 3
JA - IEICE TRANSACTIONS on Information
Y1 - March 2019
AB - Although HEVC rate control can achieve high coding efficiency, it still does not fully utilize the special characteristics of surveillance videos, which typically have a moving foreground and relatively static background. For surveillance videos, it is usually necessary to provide a better coding quality of the moving foreground. In this paper, a foreground-background CTU λ separate decision scheme is proposed. First, low-complexity pixel-based segmentation is presented to obtain the foreground and the background. Second, the rate distortion (RD) characteristics of the foreground and the background are explored. With the rate distortion optimization (RDO) process, the average CTU λ value of the foreground or the background should be equal to the frame λ. Then, a separate optimal CTU λ decision is proposed with a separate λ clipping method. Finally, a separate updating process is used to obtain reasonable parameters for the foreground and the background. The experimental results show that the quality of the foreground is improved by 0.30 dB in the random access configuration and 0.45 dB in the low delay configuration without degradation of either the rate control accuracy or whole frame quality.
ER -
English
