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王旭博士学术报告

Author:电信系Time:2014-08-27Hits:

  报告题目:Generalized Nash Bargaining Solution to Rate Control Optimization for Spatial Scalable Video Coding

  

  报告人:王旭博士

  

  报告时间: 2014年8月30日上午9: 30-11: 30

  

  报告地点:武汉光电国家实验室F401

  

  Abstract:

  

  Rate control (RC) optimization is indispensable for scalable video coding (SVC) with respect to bitstream storage and video streaming usage. From the perspective of centralized resource allocation optimization, the inner-layer bit allocation problem is similar to the bargaining problem. Therefore, bargaining game theory can be employed to improve the RC performance for spatial SVC. In this paper, we propose a bargaining game-based one-pass RC scheme for spatial H.264/SVC. In each spatial layer, the encoding constraints, such as bit rates, buffer size are jointly modeled as resources in the inner-layer bit allocation bargaining game. The modified rate-distortion model incorporated with the inter-layer coding information is investigated. Then, the generalized nash bargaining solution (NBS) is employed to achieve an optimal bit allocation solution. The bandwidth is allocated to the frames from the generalized NBS adaptively based on their own bargaining powers. Experimental results demonstrate that the proposed RC algorithm achieves appealing image quality improvement and buffer smoothness. The average mismatch of our proposed algorithm is within the range of 0.19%–2.63%.

  

  Agenda:

  

Presentation: Generalized Nash Bargaining Solution to Rate Control Optimization for Spatial Scalable Video Coding

  

Discussions: 3D Video Processing and Crucial Techniques.

  

  Biography:

  

  Dr. Wang Xu received his Ph.D. degree from the Department of Computer Science, City University of Hong Kong, Hong Kong in 2014. He is currently a Postdoctoral researcher of the Department of Computer Science/Shenzhen Research Institute, City University of Hong Kong. Dr. WANG has been working on the field of video coding optimization and image quality assessment since 2007. He is a co-author of 24 publications in international conferences and journals, including 4 IEEE Trans. papers.


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