Overview of the video transcoding techniques in DCT domain

被引：0
|
作者：
Du, Yao-Gang [1 ,2 ]
Cai, An-Ni [1 ]
机构：
[1] Telecommunication Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China
[2] Foundation Department, Beijing Institute of Electronic Science and Technology, Beijing 100070, China
来源：
Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2005年 / 33卷 / 09期
关键词：
Digital watermarking - Image compression - Mathematical transformations - Motion estimation - Motion pictures - Sampling - Security of data - Video signal processing;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
With widely applications of digital video, the requirement of video transcoding is very exigent. Video transcoding is defined as the conversion of one coded video format to another and becomes a key technique of digital multimedia network gateway. In this paper, a survey on video transcoding in DCT-domain, including several typical architectures, key techniques and an optimal transcoding strategy, and various existing algorithms to analyze their advantages and disadvantages respectively are presented. An intrablock refreshing architecture for reduced spatial resolution transcoding in DCT domain and a solution of an optimal transcoding strategy are introduced. Several research aspects in the future are proposed.
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页码：1644 / 1650
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