改进的H.263视频编解码系统的设计与实现  

Design and Realization of Ameliorative Video Encode/Decode System Based on H.263 Protocol

作　　者：邢燕[1] 贺贵明[1] 

机构地区：[1]武汉大学计算机系,湖北武汉430072

出　　处：《计算机应用研究》2002年第2期148-149,152,共3页Application Research of Computers

摘　　要：以H .2 63协议为标准 ,对其关键部分 ,如DCT ,运动估计等加以改进 ,加上快速半像素搜索 ,并以Philips公司的TM1 0 0 0卡为开发平台 ,实现了一种视频编解码系统。经过测试该系统在对qcif格式图像同时编码解码时 ,能达到每秒 3 0帧以上 ,平均码率能控制在 40Kbps以下 ,实时性和质量都有较好保证。该编码解码系统能广泛应用于可视电话、图像监控。This paper realizes a video encode decode system, according to the H.263 protocol ,which improve the key algorithm,such as DCT,motion compensation,adding fast half piexl search and taking TM1000 DSPCPU of Philips as development environment. This system, on the result of strict test,ensure real time performance and good qulity,which can achieve more than 30 fps and keep the average bit rate under 40bps when encoding and decoding qcif image at the same time. This encode decode system can be widely used in Video phone, Video monitor, Video conference and other multi media applications.

关 键 词：H.263 视频编解码系统 设计 视频通信 

分 类 号：TN919.81[电子电信—通信与信息系统]