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基于 DCT 频域条件帧间补偿法的视频编码方案及其实现
引用本文:郑伟国,肖自美.基于 DCT 频域条件帧间补偿法的视频编码方案及其实现[J].中国图象图形学报,1997(Z1).
作者姓名:郑伟国  肖自美
作者单位:中山大学电子系
基金项目:广东省重点科技攻关项目
摘    要:运动图象的压缩是实现多媒体通信的关键技术之一。本文提出一种基于离散余弦变换(DCT)系数的条件帧间补偿法及其视频编码方案。该算法利用DCT变换的特点和人眼视觉特性,快速高效地对运动图象进行编码。由于运算量低,该算法可以在PC机上用软件实时实现,适用于基于PC平台的可视电话、会议电视和可视多媒体通信系统。

关 键 词:运动图象压缩编码,频域条件帧间补偿,视频编码

A Novel Video Coding Scheme with DCT Frequency Domain Based Conditional Interframe Replenishment Algorithm and Its Implementation
Zheng Weiguo,Xiao Zimei.A Novel Video Coding Scheme with DCT Frequency Domain Based Conditional Interframe Replenishment Algorithm and Its Implementation[J].Journal of Image and Graphics,1997(Z1).
Authors:Zheng Weiguo  Xiao Zimei
Abstract:A Novel Video Coding Scheme with conditional interframe replenishment(CFR) algorithm based on DCT frequency domain is proposed in this paper. Utilizing the characteristics of DCT and visual perception of human, this DCT-based CFR algorithm can encode and decode motion pictures quickly and efficiently. Its compression ratio and reconstructed picture quality are similar with DCT/MC coding scheme such as H.261 and MPEG but with much lower complexity. Both simulation and practical video communication application have shown that this algorithm has high performance and ease of implementation. Because of its low computing complexity, it can be real-time realized by PC software. It can also work with H.261/MPEG by replacing ME/MC module(the motion vector is fixed as zero) after some little modifications on coding scheme. This DCT-based CFR algorithm and the video coding scheme are very suitable for low cost full PC software videophone, video conference and multimedia communication system.
Keywords:Motion picture coding  Conditional interframe replenishment in frequency  domain  Video coding  
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