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DOI:
Journal of Software:2006.17(zk):233-242

一种面向窄带环境的远程屏幕同步方法
蒋文斌,金海,过敏意,邵志远,朱漳楠
(华中科技大学 集群与网格计算湖北省重点实验室,湖北 武汉 430074;上海交通大学 计算机科学与工程系,上海 200030)
A Low Bandwidth-Oriented Remote Screen Synchronization Approach
JIANG Wen-Bin,JIN Hai,GUO Min-Yi,SHAO Zhi-Yuan,ZHU Zhang-Nan
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Received:March 30, 2006    Revised:October 08, 2006
> 中文摘要: 综合考虑计算机屏幕在变化过程中时间与空间的双重冗余,提出一种新的远程屏幕同步方法,以进一步减少传输的数据量.当前屏幕的变化区域和前一帧相应区域间的时间冗余得到了充分考虑.同时采用了一种改进的SSC-APDS(subsampling search candidates in adjustable partial distortion search)算法,显著地提高了时间冗余处理过程中块运动估计的速度.实验结果表明该方法,能够进一步减少屏幕传输的带宽消耗,并降低客户端的开销.该方法已经在一个实际的无线会议投影与协作系统FreeSpeech中采用,取得了较好的效果.
Abstract:This paper presents an approach for remote screen synchronization by applying the association of spatio-temporal redundancy reductions (ASTR). The temporal redundancy between the current changed screen area and the previous frame is taken into account. By applying an improved SSC-APDS (Subsampling Search Candidates in Adjustable Partial Distortion Search) algorithm, the speed of the block motion estimation is increased obviously. Experimental results approve that this approach can save more bandwidth in transferring the screen data and reduce the overhead of the client. It has been used in a practical wireless application for conference projecting and cooperating named FreeSpeech with good performance.
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基金项目:Supported by the National Natural Science Foundation of China under Grant No.90412010 (国家自然科学基金) Supported by the National Natural Science Foundation of China under Grant No.90412010 (国家自然科学基金)
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蒋文斌,金 海,过敏意,邵志远,朱漳楠.一种面向窄带环境的远程屏幕同步方法.软件学报,2006,17(zk):233-242

JIANG Wen-Bin,JIN Hai,GUO Min-Yi,SHAO Zhi-Yuan,ZHU Zhang-Nan.A Low Bandwidth-Oriented Remote Screen Synchronization Approach.Journal of Software,2006,17(zk):233-242