Optimal transrating via DCT coefficients modification and dropping

Shmuel Benyaminovich, Ofer Hadar, Evgeny Kaminsky

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

Coefficient dropping is a common tool for video transrating in order to adapt it to various network bandwidth constraints. Several recent works propose Lagrangian optimization for finding the optimal retained coefficients for each coded block to achieve the desired bit-rate with minimum distortion. In this paper we extend the Lagrangian optimization procedure by modifying the coefficients prior to dropping them. The purpose of this Lagrangian extension is to provide higher PSNR than other coefficient dropping methods without increasing computational complexity significantly.

Original languageEnglish
Title of host publicationITRE 2005 - 3rd International Conference on Information Technology
Subtitle of host publicationResearch and Education - Proceedings
Pages100-104
Number of pages5
DOIs
StatePublished - 1 Dec 2005
EventITRE 2005 - 3rd International Conference on Information Technology: Research and Education - Hsinchu, Taiwan, Province of China
Duration: 27 Jun 200530 Jun 2005

Publication series

NameITRE 2005 - 3rd International Conference on Information Technology: Research and Education - Proceedings
Volume2005

Conference

ConferenceITRE 2005 - 3rd International Conference on Information Technology: Research and Education
Country/TerritoryTaiwan, Province of China
CityHsinchu
Period27/06/0530/06/05

Keywords

  • MPEG
  • Transrating
  • Video Compression

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