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

1. 2002 (1) MPEG2视频传输速率动态平滑的研究进展。(2)利用分数布朗运动（fBm）对MPEG2进行建模。(3)分布式标记帧同步码的编解码算法。(4)提出适合压缩视频数据的可计数源的算术编码。2003通过数值实验，我们发现平滑视频传输速率可以建模为fBm，即一个长时间记忆和自相似的过程。此外，在jitter3的作用下，计算了服务器端的缓冲区溢出概率。2004(1)为了最小化表征fBm的Hurst参数的极限方差，推导了小波变换的最大尺度参数。(2)解决了平滑多路视频流时部分视频流传输不可行的问题。(3)提出了一种新的组播通信协议，该协议采用带IP选项的单播地址，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