摘要
为提供稳定高效的网络多视点立体电视服务,设计并实现了网络立体电视中P2P对等体的测量机制和调度机制.P2P对等体测量机制基于多视点视频的传输失真模型对对等体的失真率进行计算评估,应用VoDCrawler软件对P2P网络中影响数据传输的对等体关键参数进行测量,从而将失真率低和数据传输效果好的对等体提供给用户连接,达到优化网络对等体的数据传输的目的.实时分配数据传输任务的调度机制根据对等体列表中每个对等体的测量结果,对数据传输的任务分配进行优化,保证了多视点立体视频的视点完整性以及保证QoS的视频播放服务.实验结果表明,网络立体电视用户在获取服务时的服务质量可满足需求,视频播放的帧速率高且稳定.
In order to provide stable and efficient multiview 3D video service,the P2P connection filtration mechanism and the transmission scheduling mechanism of network multiview 3D video system were proposed.P2P connection filtration mechanism evaluated the loss rate of other peers based on the channel distortion model for multiview video transmission,and VodCrawler was used to measure the key metrics which would affect P2P transmission.According to the results of the P2P connection filtration mechanism,the system provided the clients with peers that had low loss rate and better network data transmission to improve the data transmission between clients.The transmission scheduling mechanism implemented improved task allocation based on the measurement of peers to guarantee the completeness of the views and video play with QoS.Experiment results demonstrate that network multiview 3D video clients have better service quality and the video frame per second(FPS) is higher and more stable in the proposed network multiview 3D video system.
出处
《天津大学学报（自然科学与工程技术版）》
EI
CAS
CSCD
北大核心
2012年第7期622-628,共7页
Journal of Tianjin University：Science and Technology
基金
国家高技术研究发展计划(863计划)资助项目(2009AA01A336)
