框架扩展下的多描述MDSQ编码的改进  

Improvement of MDSQ algorithm by frame-expansion

作　　者：王礽晓[1] 倪林[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系

出　　处：《计算机工程与应用》2009年第23期162-164,181,共4页Computer Engineering and Applications

基　　金：国家自然科学基金No.60672055~~

摘　　要：数据在差错信道下可能会发生数据包丢失等问题,而研究开发实时并且具有较好鲁棒性的媒体流数据编码已成为当前一个热门研究领域,多描述编码则是解决上述问题的一种很好的编码方式。框架是一组冗余的基,通过框架表示的数据具有很强的差错恢复性和鲁棒性。通过框架扩展对多描述MDSQ算法进行改进。通过实验表明,该算法简单、有效,能够很好地提高数据恢复质量。The data in the error-prone channels may occur problems such as packet loss.The research and development of the media stream data coding which has the properties of real-time and better robustness has now become a hot area of research,multiple description coding is one of the coding methods to solve the problems.Frame is a set of redundant base,the data represented by frames have the strong error recovery and robustness.This paper introduces a new method used the frame-expansion of the MDSQ algorithm.Experiment shows that the algorithm is simple,effective and can be very good to improve the quality of data recovery.

关 键 词：多描述编码 标量量化多描述编码(MDSQ) 框架扩展 信息冗余 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]