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Research on optimal spatio-temporal rate control for 4K UHD videos

Research Project

Project/Area Number 15K00150
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Multimedia database
Research InstitutionUniversity of Fukui

Principal Investigator

YOSHIDA Toshiyuki  福井大学, 学術研究院工学系部門, 教授 (50240297)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords動画像符号化 / 4K動画像 / 時空間画質 / MOS / 画質制御 / レート制御 / 定MOS符号化
Outline of Final Research Achievements

4K60P video transmission requires an efficient video encoder as well as a spatio-temporal rate control technique that maximizes resulting video qualities. This research has aimed at an extention of such a rate control technique, previously proposed by the author, into 4K60P videos, i.e., the rate control tecnique based on a maxmization of an estimated subjective video quality (EMOS). A spatio-temporal EMOS estimation technique for 4K60P videos was first established, and then it was applied to H.265/HEVC encoder to realize an EMOS-maximization-based video encoder. It was also applied to a constant-EMOS coding and a video quality equalization technique to verify the validity of our approach. These experiments have suggeested that a frame rate of 60Hz is often insufficient to make the best of the 4K video resolution.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (6 results)

All 2018 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Estimation of Subjective Quality for Compressed 4K Videos2017

    • Author(s)
      吉田俊之
    • Journal Title

      電子情報通信学会論文誌D 情報・システム

      Volume: J100-D Issue: 9 Pages: 835-838

    • DOI

      10.14923/transinfj.2017IEL0002

    • ISSN
      1880-4535, 1881-0225
    • Year and Date
      2017-09-01
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] EMOS-based spatio-temporal rate control technique2018

    • Author(s)
      Akira Yamanaka, Toshiyuki Yoshida
    • Organizer
      International Workshop on Advanced Image Technology
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 4K動画像を対象とした時間方向のMOS予測手法について2017

    • Author(s)
      山口翔也,吉田俊之
    • Organizer
      平成 29 年度電気関係学会北陸支部連合大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 4K60P動画像に対するEMOS最大化レート制御について2017

    • Author(s)
      山中彰,吉田俊之
    • Organizer
      2017年度画像符号化シンポジウム
    • Related Report
      2017 Annual Research Report
  • [Presentation] 4K60P動画像に対する時空間のMOS予測について2016

    • Author(s)
      菊野哲誠,吉田俊之
    • Organizer
      第31回 画像符号化シンポジウム
    • Place of Presentation
      ラフォーレ修善寺(静岡県伊豆市)
    • Year and Date
      2016-11-16
    • Related Report
      2016 Research-status Report
  • [Presentation] 1点のRDポイントの計測に基づくRD曲線の高精度予測について2016

    • Author(s)
      山中彰,吉田俊之
    • Organizer
      第31回 画像符号化シンポジウム
    • Place of Presentation
      ラフォーレ修善寺(静岡県伊豆市)
    • Year and Date
      2016-11-16
    • Related Report
      2016 Research-status Report

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Published: 2015-04-16   Modified: 2019-03-29  

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