| New Rate Allocation Method for MPEG-4 FGS Video Streaming |
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| 引用本文： | 董海燕,芦汉生,李升才,侯山峰,高稚允. New Rate Allocation Method for MPEG-4 FGS Video Streaming[J]. 北京理工大学学报(英文版), 2005, 14(2): 150-153 |
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| 作者姓名： | 董海燕 芦汉生 李升才 侯山峰 高稚允 |
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| 作者单位： | [1]SchoolofInformationScienceandTechnology,BeijingInstituteofTechnology,Beijing100081,China [2]BeijingGefeiVisionTechnologyandDevelopmentCoLtd,Beijing100029,China |
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| 摘 要： | A new rate allocation method for fine-granular scalability (FGS) coded bltstreams is presented in order to achieve smooth quality reconstruction of frames under channel conditions with a wide range of bandwidth variation and improve the average PSNR of the whole sequence. Based on a quality weighted bit allocation method, a sliding window rate allocation method is proposed for the first time so that the window can slide along the video sequence with a certain sliding step. Experimental results show that, under dynamic bandwidth conditions, the proposed method can simultaneously satisfy the requirements for improving average PSNR of the whole video sequence greatly and reducing the fluctuations between adjacent frames greatly.
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| 关 键 词： | MPEG-4 视频通信 图像处理 可测量性 比例分配 |
| 收稿时间： | 2003-09-26 |
New Rate Allocation Method for MPEG-4 FGS Video Streaming |
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| DONG Hai-yan,LU Han-sheng,LI Sheng-cai,HOU Shan-feng and GAO Zhi-yun. New Rate Allocation Method for MPEG-4 FGS Video Streaming[J]. Journal of Beijing Institute of Technology, 2005, 14(2): 150-153 |
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| Authors: | DONG Hai-yan LU Han-sheng LI Sheng-cai HOU Shan-feng GAO Zhi-yun |
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| Affiliation: | 1. School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2. Beijing Gefei Vision Technology and Development Co Ltd, Beijing 100029, China |
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| Abstract: | A new rate allocation method for fine-granular scalability (FGS) coded bitstreams is presented in order to achieve smooth quality reconstruction of frames under channel conditions with a wide range of bandwidth variation and improve the average PSNR of the whole sequence. Based on a quality weighted bit allocation method, a sliding window rate allocation method is proposed for the first time so that the window can slide along the video sequence with a certain sliding step. Experimental results show that, under dynamic bandwidth conditions, the proposed method can simultaneously satisfy the requirements for improving average PSNR of the whole video sequence greatly and reducing the fluctuations between adjacent frames greatly. |
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| Keywords: | fine granular scalability video streaming rate allocation smooth quality sliding window |
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