课程设计数字电视视频压缩技术.doc

课题：数字电视视频压缩技术 学院：信息科学与工程 专业：电子信息工程（应用） 班级：07-2班 姓名： 学号： 指导老师： 二〇一〇 年 十二 月 二十八 日 数字电视视频压缩技术 摘 要 20世纪80年代以后，电子信息技术领域的数字化革命极大地改变了人类的生活方式和工作方式，获取和处理信息越来越容易快捷，方式越来越多样，信息也已经从简单的文字图片向更为复杂的音视频多媒体信息转变。但信息量的爆炸性增长也使得现有的信道资源出现瓶颈，所以数据压缩技术，特别是广播电视系统的压缩编码技术成为了解决信息有效传输的关键。为了实现各种网络和多媒体系统的互通互联，国际标准化组织（International Organization for Standardization，ISO）、国际电工委员会（International Electrotechnical Commission，IEC）、国际电信联盟（International Telecommunications Union，ITU）等国际组织，于20世纪90年代制定了许多重要的多媒体数据压缩标准，如JPEG，H.261，H.263，H.264，MPEG-1，MPEG-2，MPEG-4和MPEG-7等。这些标准已在数字电视、多媒体通信领域得到广泛应用，极大的推动了数字电视技术及多媒体技术的发展。 关键字：数字电视 数据压缩 编码 标准 Digital televisions video compression technology Information Science and Engineering College Electronic and Information Engineering Class 07-2 yangjianlong 3071818215 Abstract: After 80s of the 20th century，the digital revolution of electronic and information technology has greatly changed the way people live and work, it’s more easier and faster to obtain and process information, and there are more and more variety, the information has changed from the simple texts and pictures to the complexer audio and video multimedia information。But the explosive growth of information also makes the existing information channel resources into the bottleneck, so the data compression technology, especially radio and television system compression technology，has become the key to solve the effective transmission of information. In order to achieve the interconnection of a variety of network and multimedia systems, the International Organization for Standardization (International Organization for Standardization, ISO), International Electrotechnical Commission (International Electrotechnical Commission, IEC), International Telecommunications Union (International Telecommunications Union, ITU) and other international organizations had developed numerous important standards of multimedia data compression in 90s of the 20th century，such as JPEG, H.261, H.263, H.264, MPEG-1, MPEG-2, MPE