期刊名称：International Journal of Advanced Research In Computer Science and Software Engineering
印刷版ISSN：2277-6451
电子版ISSN：2277-128X
出版年度：2013
卷号：3
期号：1
出版社：S.S. Mishra
摘要：Today, video coding is used in a wide range of applications ranging from multi -media messaging, video telephony, video conferencing over mobile TV, wireless and internet video streaming to Standard Definition TV Broadcasting (SDTV) and High Definition TV Broadcasting (HDTV). In order to provide efficient communication the audio and video signals are compressed before broadcasting. Differences exist among various compression standards and their implementation based on the primary requirements of the target a pplication. Though MPEG-1, MPEG-2, MPEG-4 and MPEG-7 standards exists, only MPEG-2 provides efficient transmission of the compressed digital content across a network. Both SDTV and HDTV end users have different quality, resolution and must have an encoding-decoding mechanism, such that they can receive same broadcast and deliver the respective quality and resolution videos. These variable transmission conditions can be dealt using the sca lability technique. The ability to encode and decode a video at varying quality and resolution is termed as scalability. In this project we mainly concentrate on scalability techniques of MPEG-2 stand ard, that have an ability to encode and decode a video at varying quality and resolution and we also implement the performance of each scalability technique for different video signals.
关键词：Compression; Video coding; Motion estimation; MPEG-2; Scalability techniques
