有损网络中三维模型渐进传输策略

Progressive Transmission Strategy of 3D Model over Lossy Network

采用渐进压缩网格(CPM)算法将其产生的数据流进行重要度分组,按照重要度的不同分成若干组,结合流式传输技术,对各重要度的数据组采用不同的网络信道进行传输,并根据网络状况和用户需求,动态改变通过可靠信道传输的数据量,从而提高系统的实时性,提出一种新的三维模型远程交互显示解决方案及相应的数据传输策略。仿真实验结果表明,该方法能在满足用户视觉需求和精度要求的前提下,获得较好的实时性。

The CPM algorithm is applied and the data streams created by it is grouped into several sets by their important degree.With combination of streaming transmission technology,the data sets with different important degree are transmitted by respective channels.The network condition and user＇s needs are taken into account.The amount of data transmitted by the reliable channel can be changed dynamically and the real time characteristic of the system is improved.A new remote interactive display solution for 3D model over lossy network is also presented.Simulation results show the solution has better real-time performance under the premise of the user＇s visual need and the precision requirement.