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多媒体数据压缩技术是多媒体、网络通讯以及计算机等应用研究领域的一项关键技术。多媒体数据经过压缩后再进行存储或通过网络进行传输，这已经逐渐成为多媒体应用中的标准模式；同时，多媒体应用中所涉及到的各种媒体数据，如图象、视频和音频数据，往往需要进行各种灵活的操作与处理，因此，压缩域多媒体数据直接处理技术成为一项很有意义的研究领域。文中首先就压缩数据处理的基本概念进行讨论，然后集中分析了这一研究领域的重要研究成果，并指出了一些可能的研究方向。
Multimedia data compression technology is a key technology in multimedia, network communication and computer application research. Multimedia data is compressed and then stored or transmitted over the network, which has gradually become the standard model in multimedia applications; at the same time, various media data involved in multimedia applications, such as image, video and audio data, often require For a variety of flexible operation and processing, therefore, compressed domain multimedia data processing technology has become a very interesting area of research. In this paper, the basic concepts of compressed data processing are discussed first, and then the important research results in this field are analyzed intensively. Some possible research directions are also pointed out.