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中文摘要：
研究开发实时、鲁棒的流媒体编码与传输技术已成为当前信息技术的一个热点问题.多描述编码作为解决该问题的一种方法,因其在满足数据传输实时性要求的同时可减少数据失真,受到广泛关注.文中首先介绍了多描述编码的历史和评价性能指标,然后详述了多描述编码的研究和进展状况,包括各类多描述编码方法的思想、框架和特点,最后对现有研究中存在的难点问题进行了探讨与展望.
英文摘要：
The research on streaming media coding and transmission technology which is real-time and robust, has become a hotspot in current information technology. As a method of solving this problem, multiple description coding （MDC） is concerned widely, due to satisfy the requirement of real-time data transmission and reduce data distortion. This paper firstly introduces the history of MDC and its factors for evaluating performance. Then, it elaborates the research and progress of MDC, including the ideas, frames and characteristics of various kinds of MDC methods. Finally, it discusses the difficult problems on this area.
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