<abstract xmlns="http://www.w3.org/1999/xhtml"><p>With the development of Internet and video capture techniques, videoconferencing becomes still more popular. However, with the increased size of the video resolution, the volume of the raw videoconferencing video data increases dramatically. The H.265/HEVC video compression standard can efficiently compresses the videoconferencing video, while the high compression rate is at the cost of heavy encoding complexity. Hence, reducing the complexity is vital to be used for the H.265/HEVC encoder in videoconferencing systems. In this paper we proposed a low complexity H.265/HEVC coding unit size decision algorithm for a videoconferencing system, by considering the coding content property of the coding unit, in which the coding unit size decision process is terminated if the prediction residuals of the coding unit are all transformed and quantized to zeroes. The experimental results show that the proposed algorithm achieves 62.79% on average in encoding time saving, while the rate distortion degradation is acceptable.</p></abstract>

With the development of Internet and video capture techniques, videoconferencing becomes still more popular. However, with the increased size of the video resolution, the volume of the raw videoconferencing video data increases dramatically. The H.265/HEVC video compression standard can efficiently compresses the videoconferencing video, while the high compression rate is at the cost of heavy encoding complexity. Hence, reducing the complexity is vital to be used for the H.265/HEVC encoder in videoconferencing systems. In this paper we proposed a low complexity H.265/HEVC coding unit size decision algorithm for a videoconferencing system, by considering the coding content property of the coding unit, in which the coding unit size decision process is terminated if the prediction residuals of the coding unit are all transformed and quantized to zeroes. The experimental results show that the proposed algorithm achieves 62.79% on average in encoding time saving, while the rate distortion degradation is acceptable.

Low Complexity H.265/HEVC Coding Unit Size Decision for a Videoconferencing System

School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, China

Jiangsu Engineering Centre of Network Monitoring, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, China

School of Computer Science and Engineering, Hebei University of Technology, Tianjin 300401, Tianjin, China

Cybernetics and Information Technologies

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

With the development of Internet and video capture techniques, videoconferencing becomes still more popular. However, with the increased size of the video...

Low Complexity H.265/HEVC Coding Unit Size Decision for a Videoconferencing System

Published Online: Dec 30, 2015

Page range: 159 - 167

DOI: https://doi.org/10.1515/cait-2015-0076

Keywords
Videoconferencing system, H.265/HEVC, Coding unit, quadtree, low complexity

© 2015 Zhaoqing Pan et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Low Complexity H.265/HEVC Coding Unit Size Decision for a Videoconferencing System

Published Online: Dec 30, 2015

Page range: 159 - 167

DOI: https://doi.org/10.1515/cait-2015-0076

KeywordsVideoconferencing system, H.265/HEVC, Coding unit, quadtree, low complexity

© 2015 Zhaoqing Pan et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Videoconferencing system, H.265/HEVC, Coding unit, quadtree, low complexity