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A research on graph watermarking via graph spread spectrum techniques

Research Project

Project/Area Number 20K04467
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21020:Communication and network engineering-related
Research InstitutionEhime University

Principal Investigator

UTO Toshiyuki  愛媛大学, 理工学研究科(工学系), 准教授 (90380261)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords電子透かし / 情報隠蔽 / グラフ処理 / スペクトル拡散 / 三次元メッシュ / グラフ信号 / グラフ信号処理 / グラフニューラルネット / 拡散符号 / コンテンツ保護 / 3Dメッシュ
Outline of Research at the Start

本研究は,未知であるグラフ領域におけるスペクトル拡散符号の生成法を導出することにより,IoTセンサやSNS,交通・電力網などのネットワークを表現するグラフ信号のための著作権保護技術を開発することを目指した研究である.
この研究の特色は,信号処理分野の新技術であるグラフ信号処理に着目し,[目標1]スペクトル拡散技術をグラフ領域に展開したグラフ拡散符号,ならびに,[目標2]グラフ拡散符号に基づく高次元データ電子透かしの開発を狙いとしている点である.

Outline of Final Research Achievements

This study focuses on digital watermarking via graph spread spectrum techniques. Main contributions of this work are three-fold: 1) generation methods of graph spread codes, 2) watermarking schemes for 3D mesh models, and 3) watermarking algorithms for images. I presented the aforementioned approaches and demonstrated their validity.

Academic Significance and Societal Importance of the Research Achievements

スペクトル拡散技術は一次元空間や二次元空間において主に研究され,各次元領域での拡散符号が生成・応用されてきた.そこで,本研究ではグラフ領域でのスペクトル拡散技術の研究に焦点を当て,優れた自己相関特性を持つグラフ拡散符号の生成や性質を解明することに取り組んだ.結果として,サイクルグラフの生成法や有向グラフの性質を明らかにした.これらの知見からグラフ拡散符号の研究開発を進展するための基礎を構築できた.また,グラフやメッシュモデルを対象とした電子透かし手法も開発した.これらの知見は身の回りにあるアニメやCG等の著作権保護に活用でき,データの安全安心な流通を促進する効果を発揮する.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2022 2021 2020 Other

All Presentation (8 results) (of which Int'l Joint Research: 7 results) Remarks (2 results)

  • [Presentation] Robust Image Hashing Based on Wavelet Decomposition2022

    • Author(s)
      Shota Moriguchi and Toshiyuki Uto
    • Organizer
      37th International Technical Conference on Circuits/Systems, Computers and Communications
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Graph Wavelet Convolutional Network with Graph Clustering2022

    • Author(s)
      Hiroki Inatsuki and Toshiyuki Uto
    • Organizer
      37th International Technical Conference on Circuits/Systems, Computers and Communications
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spread Spectrum Based Image Watermarking with Morphological Component Analysis2022

    • Author(s)
      Yuki Yamada, Atsuya Tokunaga, Hiroki Okazaki, and Toshiyuki Uto
    • Organizer
      2022 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 有向グラフ上での拡散符号生成2021

    • Author(s)
      徳永 篤也,宇戸 寿幸
    • Organizer
      令和3年度電気・電子・情報関係学会四国支部連合大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Graph Spread Code Generation Method Based on Smear Transform2021

    • Author(s)
      Atsuya Tokunaga, Kazuki Hasegawa, and Toshiyuki Uto
    • Organizer
      2021 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Reversible Data Hiding with Embedding in Connectivity Data for Encrypted 3D Models2021

    • Author(s)
      Yuki Yamada, Kazuki Hasegawa, and Toshiyuki Uto
    • Organizer
      2021 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Image Watermarking Based on the Watershed Segmentation2020

    • Author(s)
      Kazuki Hasegawa and Toshiyuki Uto
    • Organizer
      35th International Technical Conference on Circuits/Systems, Computers and Communications
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 3-D Mesh Watermarking Based on Optimized Multiple Histograms2020

    • Author(s)
      Naoki Kashida, Kazuki Hasegawa, and Toshiyuki Uto
    • Organizer
      35th International Technical Conference on Circuits/Systems, Computers and Communications
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Remarks] 愛媛大学人工知能研究室ホームページ

    • URL

      http://aiweb.cs.ehime-u.ac.jp/~uto/

    • Related Report
      2022 Annual Research Report
  • [Remarks] 愛媛大学工学部情報工学科|宇戸研究室

    • URL

      http://aiweb.cs.ehime-u.ac.jp/~uto/

    • Related Report
      2021 Research-status Report 2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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