多媒体数据的压缩原理及技术

随着互联网的普及，人们对信息的需求尤其是多媒体信息的需求日益增长。为保障大容量的多媒体数据在互联网上的有效传输，必须对多媒体数据进行压缩处理。针对多媒体数据在空间、时间、结构、视觉、知识等方面所产生的冗余，利用有损压缩和无损压缩方法，对图像、音频、视频等多媒体数据进行压缩，形成联合图像专家组JPEG、运动图像专家组MPEG、H．320视频编码算法等常用压缩标准。

The compressing principle and technique of multimedia data

With the widespread popularity of Internet,the demand for information,especially multimedia information has keep rising.To protect the large capacity multimedia data to transmit on the internet effectively,we must compress the multimedia data.According to the redundancy in space,time,structure,vision and knowledge,multimedia data such as images,audio frequency,video are compressed by the loss and lossless compression.The common compression on standards include of JPEG,MPEG and so on.