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

    ASJC Scopus subject areas

    • General Engineering

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