Operational processing of coded data in the coded region

Kazuo Ohzeki, Michinori Nakajima

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Distribution of coded files is increasingly growing. Signal processing after coding increases with the growth of distribution, and is becoming a significant burden in the media environment. New signal processing methods of addition, multiplication, and exchanging of coded regions are becoming important for suppressing delay, reducing the amount of calculation, and maintaining picture quality. Some of these processing had been tried as manipulating compressed images[1-2]. The B-picture in the MPEG algorithm is a barrier in realizing these processing ideals. A new coding algorithm in the future should meet a new criterion to evaluate operational convenience of the coded region together with the conventional rate and distortion criterion. In this presentation we consider examples of signal processing of the coded region, such as logo insertion and non-linear editing. The logo insertion replaces parts of a coded file by other coded logo data. The problem of moving frame is analyzed. Non-linear editing of the coded region cannot be completed for MPEG data. A number of conditions for maintaining picture quality are presented.

Original languageEnglish
Title of host publicationPicture Coding Symposium
Number of pages6
Publication statusPublished - 2003 Dec 9
EventPicture Coding Symposium - Saint Malo, France
Duration: 2003 Apr 232003 Apr 25

Publication series

NamePicture Coding Symposium


ConferencePicture Coding Symposium
CitySaint Malo

ASJC Scopus subject areas

  • Signal Processing
  • Computer Graphics and Computer-Aided Design


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