• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2014 Fiscal Year Annual Research Report

インタラクティブマルチビュービデオ通信システム

Research Project

Project/Area Number 23700136
Research InstitutionNational Institute of Informatics

Principal Investigator

CHEUNG GENE  国立情報学研究所, コンテンツ科学研究系, 准教授 (40577467)

Project Period (FY) 2011-04-28 – 2015-03-31
Keywords国際情報交換 / グラフ信号処理 / 画像復元
Outline of Annual Research Achievements

研究実績は以下の二点に要約される。一点目はグラフ信号を用いた画像復元問題の適応。二点目はマルチビュービデオストリーミングシステム用の画像合成。

一点目に関しては、グラフ信号処理(graph signal processing (GSP))のツールgraph-signal smoothness priorを適切に定義し、画像のノイズ除去 (denoising)、JPEG画像の逆量子化 (de-quantization)、コントラスト促進 (contrast enhancement)などの画像復元問題に適応する研究を行った。不完全なノイズ破損した信号から適切なグラフを設計するのが注目点である。グラフ設計により、問題は制約のない二次方程式になり、効率よく解決できる。区分的に滑らかな画像 (piecewise smooth images)には、従来の技術よりいい画質が得られた。その成果はIEEE会議で発表した。

二点目に関しては、クライアントが三次元のシーンを多視点から観察できるように、サーバー側が保存した視点画像に限らず、ネットワーク内で新たなリファレンス視点画像を合成し、クライアントに転送する手法を提案した。サーバー側が保存した視点画像のみでクライアントで視点画像を合成する手法と比べれば、よりよい画像品質ができることが判明した。その成果もIEEE会議で発表した。

  • Research Products

    (14 results)

All 2015 2014 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Acknowledgement Compliant: 2 results) Presentation (7 results) Remarks (1 results)

  • [Journal Article] Multiresolution Graph Fourier Transform for Compression of Piecewise Smooth Images2015

    • Author(s)
      Wei Hu, Gene Cheung, Antonio Ortega, Oscar Au
    • Journal Title

      IEEE Transactions on Image Processing

      Volume: vol.24, no.1, January Pages: pp.419-433

    • DOI

      10.1109/TIP.2014.2378055

    • Peer Reviewed
  • [Journal Article] Multiple Description Coding & Recovery of Free Viewpoint Video for Multi-Path Network Streaming2015

    • Author(s)
      Zhi Liu, Gene Cheung, Jacob Chakareski, Yusheng Ji
    • Journal Title

      IEEE Journal of Selected Topics in Signal Processing

      Volume: vol.9, no.1, February Pages: pp.151-164

    • DOI

      10.1109/JSTSP.2014.2330332

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Anchor View Allocation for Collaborative Free Viewpoint Video Streaming2015

    • Author(s)
      Dongni Ren, Gary Chan, Gene Cheung, Vicky Zhao, Pascal Frossard
    • Journal Title

      IEEE Transactions on Multimedia

      Volume: vol.17, no.3, March Pages: pp.307-322

    • DOI

      10.1109/TMM.2015.2389714

    • Peer Reviewed
  • [Journal Article] Loss-Resilient Coding of Texture and Depth for Free-Viewpoint Video Conferencing2014

    • Author(s)
      Bruno Macchiavello, Camilo Dorea, Edson M. Hung, Gene Cheung, Wai-tian Tan
    • Journal Title

      IEEE Transactions on Multimedia

      Volume: vol.16, no.3, April Pages: pp.711-725

    • DOI

      10.1109/TMM.2014.2299768

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Incentive Analysis for Cooperative Interactive Multiview Video Streaming2014

    • Author(s)
      Bo Hu, H. Vicky Zhao, Gene Cheung
    • Journal Title

      EURASIP Signal Processing: Image Communication

      Volume: vol.29, no.6, July Pages: pp.641-666

    • Peer Reviewed
  • [Journal Article] Coding Structure and Replication Optimization for Interactive Multiview Video Streaming2014

    • Author(s)
      Dongni Ren, Gary Chan, Gene Cheung, Pascal Frossard
    • Journal Title

      IEEE Transactions on Multimedia

      Volume: vol.16, no.7, November Pages: pp.1874-1887

    • DOI

      10.1109/TMM.2014.2332139

    • Peer Reviewed
  • [Presentation] Redefining Self-Similarity in Natural Images for Denoising Using Graph Signal Gradient2014

    • Author(s)
      Jiahao Pang, Gene Cheung, Wei Hu, Oscar C. Au
    • Organizer
      APSIPA ASC 2014
    • Place of Presentation
      Siem Reap, Combodia
    • Year and Date
      2014-12-09 – 2014-12-12
  • [Presentation] Disocclusion Hole-Filling in DIBR-Synthesized Images using Multi-Scale Template Matching2014

    • Author(s)
      Smarti Reel, Patrick Wong, Gene Cheung, Laurence S. Dooley
    • Organizer
      IEEE Visual Communications and Image Processing
    • Place of Presentation
      Valleta, Malta
    • Year and Date
      2014-12-07 – 2014-12-10
  • [Presentation] Graph-based Joint Denoising and Super-resolution of Generalized Piecewise Smooth Images2014

    • Author(s)
      Wei Hu, Gene Cheung, Xin Li, Oscar Au
    • Organizer
      IEEE International Conference on Image Processing
    • Place of Presentation
      Paris, France
    • Year and Date
      2014-10-27 – 2014-10-30
  • [Presentation] Image Bit-depth Enhancement via Maximum-a-Posteriori Estimation of Graph AC Component2014

    • Author(s)
      Pengfei Wan, Gene Cheung, Dinei Florencio, Cha Zhang, Oscar Au
    • Organizer
      IEEE International Conference on Image Processing
    • Place of Presentation
      Paris, France
    • Year and Date
      2014-10-27 – 2014-10-30
  • [Presentation] Joint Gaze-Correction and Beautification of DIBR-Synthesized Human Face via Dual Sparse Coding2014

    • Author(s)
      Xianming Liu, Gene Cheung, Deming Zhai, Debin Zhao, Hiroshi Sankoh, Sei Naito
    • Organizer
      IEEE International Conference on Image Processing
    • Place of Presentation
      Paris, France
    • Year and Date
      2014-10-27 – 2014-10-30
  • [Presentation] Image Interpolation for DIBR View Synthesis Using Graph Fourier Transform2014

    • Author(s)
      Yu Mao, Gene Cheung, Yusheng Ji
    • Organizer
      3DTV-Conference 2014
    • Place of Presentation
      Budapest, Hungary
    • Year and Date
      2014-07-02 – 2014-07-04
  • [Presentation] Low-Saliency Prior for Disocclusion Hole Filling in DIBR-Synthesized Images2014

    • Author(s)
      Bruno Macchiavello, Camilo Dorea, Edson M. Hung, Gene Cheung, Ivan Bajic
    • Organizer
      IEEE International Conference on Acoustics, Speech and Signal Processing
    • Place of Presentation
      Florence, Italy
    • Year and Date
      2014-05-04 – 2014-05-09
  • [Remarks] Gene Cheung's personal page

    • URL

      http://research.nii.ac.jp/~cheung/index.html

URL: 

Published: 2016-06-01  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi