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1引言MPEG-4是运动图像专家组(Moving Picture Expert Group)标准家庭中的一员,是国际标准化组织为多媒体通信制定的一种解决方案。MPEG-1/2均以音频帧、视频帧为编码对象,图像中的 AV(Audio 和 Video)对象所组成的场景不能与人们进行交互。而 MPEG-4的主要特点是
1 Introduction MPEG-4 is a member of the Moving Picture Expert Group standard family and is a solution developed by the International Organization for Standardization for multimedia communications. MPEG-1/2 encode audio frames and video frames. Scenes composed of AV (Audio and Video) objects in an image can not interact with people. The main feature of MPEG-4 is