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Flicker Reduction and Visual Quality Improvement for High Definition Compressed Videos

Research Project

Project/Area Number 26330128
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Multimedia database
Research InstitutionThe University of Electro-Communications

Principal Investigator

ZHANG Xi  電気通信大学, 大学院情報理工学研究科, 教授 (40251706)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords動画像符号化 / ノイズ除去 / フリッカー低減 / ウェーブレット変換 / 閾値処理 / 高精細動画像 / ディジタルフィルタ / 画質改善 / フリッカー除去 / 動画像圧縮 / ウェーブレット縮退法 / 高速アルゴリズム / 評価基準 / 最適閾値
Outline of Final Research Achievements

Flicker artifact can appear in compressed videos even at medium bit rate. It is perceptible as a small variation in pixel value, and is extremely visible in high definition videos. This visual artifact impairs significantly the visual quality of compressed videos. Therefore, it is important to suppress the flicker artifact and to improve the visual quality of compressed videos.
In this research, we introduce a new approach to flicker reduction of compressed videos by using wavelet thresholding. The flicker artifact can be thought of as Gaussian noise in the temporal domain. We view this flicker reduction as a denoising problem in the temporal domain, and apply the wavelet thresholding algorithm in solving this flicker reduction problem. The wavelet thresholding algorithm has exhibited the excellent denoising property. It is shown from our experimental results that our wavelet-based method suppresses the flicker artifact and achieve an improvement, compared with the conventional methods.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report

Research Products

(17 results)

All 2017 2016 2015 2014

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Acknowledgement Compliant: 2 results) Presentation (14 results) (of which Int'l Joint Research: 7 results)

  • [Journal Article] High dynamic range image compression with improved logarithmic transformation2017

    • Author(s)
      M. Sumizawa, X. Zhang
    • Journal Title

      IEICE ComEX

      Volume: 6 Issue: 1 Pages: 17-21

    • DOI

      10.1587/comex.2016xbl0148

      10.1587/comex.2016XBL0148

    • NAID

      130005239786

    • ISSN
      2187-0136
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] A New Class of Hilbert Pairs of Almost Symmetric Orthogonal Wavelet Bases2016

    • Author(s)
      D. W. Wang, X. Zhang
    • Journal Title

      IEICE Trans. Fundamentals

      Volume: E99-A Issue: 5 Pages: 884-891

    • DOI

      10.1587/transfun.e99.a.884

      10.1587/transfun.E99.A.884

    • NAID

      130005148588

    • ISSN
      0916-8508, 1745-1337
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Lossy to Lossless Image Coding Based on Wavelets Using a Complex Allpass Filter2014

    • Author(s)
      X. Zhang, N. Fukuda
    • Journal Title

      International Journal of Wavelets, Multiresolution and Information Processing

      Volume: 12

    • DOI

      10.1142/s0219691314600029

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] オールパスフィルタに基づくウェーブレットによる高精細圧縮動画像のフリッカー低減2016

    • Author(s)
      志賀洋介,張煕
    • Organizer
      第31回信号処理シンポジウム
    • Place of Presentation
      関西大学(大阪府吹田市)
    • Year and Date
      2016-11-08
    • Related Report
      2016 Annual Research Report
  • [Presentation] High Dynamic Range Image Compression Using Improved Logarithmic Transformation2016

    • Author(s)
      M.Sumizawa, X.Zhang
    • Organizer
      The Irago Conference 2016
    • Place of Presentation
      電気通信大学(東京調布)
    • Year and Date
      2016-11-01
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Frame Interpolation Method for Low Frame Rate Videos2016

    • Author(s)
      K.Yoshida, X.Zhang
    • Organizer
      The Irago Conference 2016
    • Place of Presentation
      電気通信大学(東京調布)
    • Year and Date
      2016-11-01
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Improvement of Search Algorithm for Motion Compensation in Video Coding2016

    • Author(s)
      J.Gao, X.Zhang
    • Organizer
      The Irago Conference 2016
    • Place of Presentation
      電気通信大学(東京調布)
    • Year and Date
      2016-11-01
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Design of Orthogonal Graph Wavelet Filter Banks2016

    • Author(s)
      X.Zhang
    • Organizer
      IECON 2016
    • Place of Presentation
      Palazzo dei Congressi (Florence, Italy)
    • Year and Date
      2016-10-23
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Novel Design of Biorthogonal Graph Wavelet Filter Banks2016

    • Author(s)
      X.Zhang
    • Organizer
      ICIP 2016
    • Place of Presentation
      Phoenix Convention Centre (Phoenix, Arizona, USA)
    • Year and Date
      2016-09-25
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 対数変換を改良したHDR画像符号化2016

    • Author(s)
      住澤柾秀,張煕
    • Organizer
      2016年電子情報通信学会総合大会, D-11-50
    • Place of Presentation
      九州大学
    • Year and Date
      2016-03-15
    • Related Report
      2015 Research-status Report
  • [Presentation] ヒストグラムパッキングを用いたHDR画像二階層符号化の改善2015

    • Author(s)
      菅野元貴,張煕
    • Organizer
      電子情報通信学会技術研究報告, IE2015-96
    • Place of Presentation
      神戸大学
    • Year and Date
      2015-12-03
    • Related Report
      2015 Research-status Report
  • [Presentation] Flicker Reduction for Motion JPEG 2000 Using Allpass-based Wavelets2015

    • Author(s)
      Y.Shiga, X.Zhang
    • Organizer
      The Irago Conference 2015
    • Place of Presentation
      Tahara-city, Aichi, Japan
    • Year and Date
      2015-10-22
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Variable Step-size Based-adaptive Algorithm for Acoustic Feedback Cancellation During Online Operation of ANC Systems2015

    • Author(s)
      S.Ahmed, M.T.Akhtar, X.Zhang
    • Organizer
      Proceedings of ChinaSIP 2015
    • Place of Presentation
      Chengdu, China
    • Year and Date
      2015-07-12
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Scalable Video Coding Using Allpass-Based Wavelet Filters2014

    • Author(s)
      X.Zhang, T.Suzuki
    • Organizer
      APCCAS 2014
    • Place of Presentation
      石垣島全日空ホテル
    • Year and Date
      2014-11-17 – 2014-11-20
    • Related Report
      2014 Research-status Report
  • [Presentation] MthバンドFIR線形位相フィルタの最適近似2014

    • Author(s)
      張煕
    • Organizer
      2014年電子情報通信学会ソサイエティ大会
    • Place of Presentation
      徳島大学
    • Year and Date
      2014-09-23 – 2014-09-26
    • Related Report
      2014 Research-status Report
  • [Presentation] Design of Mth-band FIR Linear Phase Filters, 2014-08, (Hong Kong)2014

    • Author(s)
      X.Zhang
    • Organizer
      DSP 2014
    • Place of Presentation
      香港科学技術大学
    • Year and Date
      2014-08-20 – 2014-08-23
    • Related Report
      2014 Research-status Report
  • [Presentation] Self-Tuned Auxiliary-Noise-Power Scheduling with Matching Step-Size for Online Acoustic Feedback Path Mitigation in Active Noise Control2014

    • Author(s)
      S.Ahmed, M.T.Akhtar, X.Zhang
    • Organizer
      電子情報通信学会応用音響研究会
    • Place of Presentation
      東北学院大学
    • Year and Date
      2014-08-19 – 2014-08-20
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2018-03-22  

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