Constuction of LAN System for Compressed Video Data Based on Wavelet Analysis

1.2002(1)开发了MPEG2视频传输速率的动态平滑。(2)利用分数布朗运动(FBM)对MPEG2建模。(3)分布式标志帧同步码的编解码算法。(4)提出了适用于压缩视频数据的可数信源算术编码。2003从数值实验中发现，平滑后的视频传输速率可以建模为FBM，即一个长时间记忆和自相似过程。此外，在jitter3影响下，评估了服务器端缓冲区的溢出概率。2004(1)推导了小波变换的最大尺度参数，以最小化表征FBM的Hurst参数的极限方差。(2)解决了对复接后的视频流进行平滑处理时，部分视频流可能无法传输的问题。(3)提出了一种新的基于IP选项的单播地址组播通信协议，实现了在现有网络上的视频广播

1. 2002 (1) Development of dynamic smoothing of transmission rate of MPEG2 video. (2) Modeling MPEG2 by using fractional Brownian motions (fBm). (3) En/decoding algorithms of frame synchronization codes with distributed markers. (4) Proposal of arithmetic codes for countable sources suited to compressed video data2. 2003 From numerical experiments, we found that smoothed video transmission rate can be modeled as fBm, that is, a long-time memory and self-similar process. Moreover, overflow probability of buffer on the server side has been evaluated under the effects on jitter3. 2004 (1) Derivation of the maximal scaling parameter of Wavelet transform to minimize the limiting variance of the Hurst parameter that characterizes fBm. (2) We solved the problem that transmission of some video streams may become infeasible when smoothing multiplexed video streams. (3) We proposed a new multicast communication protocol using unicast address with IP option which realizes video broadcasting over the existing network