Overview of the Video Transcoding Techniques in DCT Domain

DU Yao-gang; CAI An-ni

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Overview of the Video Transcoding Techniques in DCT Domain

更新时间：2025-07-16

- Overview of the Video Transcoding Techniques in DCT Domain
- Acta Electronica Sinica Vol. 33, Issue 9, Pages: 1644-1650(2005)
- 作者机构：
  
  1. 北京邮电大学电信工程学院,北京,100876
  2. 北京电子科技学院基础部,北京,100070
  3. 北京邮电大学电信工程学院北京,100876
  4. 北京电子科技学院基础部北京,100070
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN919.8
- Published：2005
- 稿件说明：
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DU Yao-gang, CAI An-ni. Overview of the Video Transcoding Techniques in DCT Domain[J]. Acta Electronica Sinica, 2005, 33(9): 1644-1650.
DOI：

DU Yao-gang, CAI An-ni. Overview of the Video Transcoding Techniques in DCT Domain[J]. Acta Electronica Sinica, 2005, 33(9): 1644-1650. DOI：

摘要

随着数字视频技术的广泛应用

实现各种视频编码格式之间转码的要求越来越迫.视频转码是数字媒体网络网关的关键技术.本文从DCT域视频转码的体系结构、关键技术及最优转码策略三个方面

介绍了现有的各种算法

分析和总结了各自的特点

提出了DCT域视频下采样帧内刷新体系结构和最优视频转码策略解的概念

并指出了下一步的研究方向.

Abstract

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 soluton of an optimal transcoding strategy are introduced.Several research aspects in the future are proposed.

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上海交通大学图像通信与信息处理研究所

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