【摘要】 传统的图像序列压缩算法采用的是基于DCT变换的变长编码算法,但传统的DCT算法以及量化过程带来不可避免的边缘效应和块效应。文中提出了基于第二代小波视频编码算法的完整模型,并且对此模型的可行性进行了分析和验证。文中的实验基于的是H.263的编码协议采用了二代小波(提升结构)变换,零型树编码,零数量化的方法。由PC机上的仿真实验结果显示此方法确实解决了前述的方块效应和边缘效应,同时满足了图像压缩率的问题和实时性要求。为将来在嵌入式平台上实现高质量的视频序列的实时传输提供了理论依据。更多还原

【Abstract】 Although the traditional compression method of video sequence is changeable coding based on DCT,the method of DCT brings some inevitable problems such as brink-effect and block-effect.This article provides a new model based on the second-wavelet.The coding method of the experiment in this article is update-wavelet transform combined with the split coding method and threshold quantization based on the protocol H.263.It is clear that this method really resolves the problem brought by traditional method DCT from the emulational result on PC,and meets the requirements of picture compression rate and real-time transmission.All of these conclusions provide a theoretical foundation for the high-qualified video sequence real-time transmission and parallel processing of pictures.更多还原