Extended Visual Cryptography Scheme for Continuous-Tone images

• Project/Area Number: 24650035
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Media informatics/Database
• Research Institution: The University of Tokyo
• Principal Investigator: YAMAGUCHI Yasushi 東京大学, 総合文化研究科, 教授 (80210376)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
• Keywords: 視覚情報処理 / 画像処理 / 視覚復号型暗号 / 画質

Outline of Final Research Achievements

Extended visual cryptography is a kind of cryptography which can be decrypted by only human visual system without any computation. For instance, a secret image can be reconstructed by stacking the transparent sheets with some other images. The conventional visual cryptography schemes are based on binary images and boolean operations. Therefore it is inevitable that encrypted and/or decrypted images are distorted by the encryption process when continuous-tone images are input to be encrypted. This study aims at improving the image quality by using continuous-tone with in the extended visual cryptography when continuous-tone images are to be encrypted.

Research Products

• [Int'l Joint Research] National Dong Hwa University(Taiwan)
• [Journal Article] Adding information does not necessarily help the motion perception: a study of the curtate cycloid illusion (2015)
  • Author(s): Hiroshi Ueda, Kohske Takahashi, Katsumi Watanabe, Yasushi Yamaguchi
  • Journal Title: Proc. of 7th International Conference on Knowledge and Smart Technology Pages: 176-179
  • DOI: 10.1109/kst.2015.7051482
  • Peer Reviewed
• [Journal Article] Image Synthesis in Consideration of a Human Visual System (2015)
  • Author(s): Yasushi Yamaguchi
  • Journal Title: The Visual Language of Technique Pages: 65-79
  • DOI: 10.1007/978-3-319-05341-7_4
  • ISBN: 9783319053400, 9783319053417
  • Peer Reviewed
• [Journal Article] Sparse Pixel Sampling for Appearance Edit Propagation (2015)
  • Author(s): T. Yatagawa and Y. Yamaguchi
  • Journal Title: The Visual Computer Volume: 31 Issue: 6-8 Pages: 1101-1111
  • DOI: 10.1007/s00371-015-1094-y
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Mesh Approximation for Generating Development with Creases and Slits (2015)
  • Author(s): Kuniko Takahashi, Tomohiro Tachi, Yasushi Yamaguchi
  • Journal Title: Journal for Geometry and Graphics Volume: 19(1) Pages: 107-118
  • Peer Reviewed
• [Journal Article] Analysis and design of elastic materials formed using 2D repetitive slit pattern (2015)
  • Author(s): Taisuke Ohshima, Tomohiro Tachi, Hiroya Tanaka, Yasushi Yamaguchi
  • Journal Title: Proc. of the International Association for Shell and Spatial Structures Symposium Volume: IASS2015-526418 Pages: 1-12
  • Peer Reviewed
• [Journal Article] Controllable Region via Texture Projection for Stylized Shading (2015)
  • Author(s): Muhammad Arief, Hideki Todo, Kunio Kondo, Koji Mikami, Yasushi Yamaguchi
  • Journal Title: Proc. of VRCAI 2015 Pages: 35-38
  • DOI: 10.1145/2817675.2817688
  • Peer Reviewed
• [Journal Article] Development and Evaluation of Education Materials for Stereoscopic 3D Computer Graphics Animation (2015)
  • Author(s): Ayumi Miyai, Yasushi Yamaguchi
  • Journal Title: Proc. of SIGGRAPH Asia 2015 Symposium on Education Volume: a. 2 Pages: 1-8
  • DOI: 10.1145/2818498.2818510
  • Peer Reviewed
• [Journal Article] Extended Visual Cryptography for Continuous-Tone Images -- Effect of the Optimum Tone Mapping -- (2015)
  • Author(s): Yasushi Yamaguchi
  • Journal Title: The International Journal of Information and Communication Technology Volume: 7(1) Issue: 1 Pages: 25-39
  • DOI: 10.1504/ijict.2015.065997
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] An Approximation Method of Triangular Mesh Models for Generating Development Diagrams with Creases and Slits (2014)
  • Author(s): Kuniko Takahashi, Tomohiro Tachi, Yasushi Yamaguchi
  • Journal Title: 16th Intl. Conf. on Geometry and Graphics Volume: - Pages: 66-74
  • NAID: 110009632511
  • Peer Reviewed
• [Journal Article] Assessment Method for an Edge Alignment Free Hybrid Image (2014)
  • Author(s): Peeraya Sripian, Yasushi Yamaguchi
  • Journal Title: 16th Intl. Conf. on Geometry and Graphics Volume: - Pages: 81-92
  • Peer Reviewed
• [Journal Article] Temporally Coherent Video Editing using an Edit Propagation Matrix (2014)
  • Author(s): Tatsuya Yatagawa and Yasushi Yamaguchi
  • Journal Title: Computers & Graphics Volume: 43 Pages: 1-10
  • DOI: 10.1016/j.cag.2014.05.001
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Extended Visual Cryptography Scheme for Multiple-Secrets Continuous-Tone Images (2014)
  • Author(s): Yasushi Yamaguchi
  • Journal Title: Lecture Notes in Computer Science Volume: 8363 Pages: 25-41
  • DOI: 10.1007/978-3-642-55046-1_2
  • ISBN: 9783642550454, 9783642550461
  • Peer Reviewed
• [Journal Article] An Extended Visual Cryptography Scheme for Continuous- Tone Images (2012)
  • Author(s): Yasushi Yamaguchi
  • Journal Title: Lecture Notes in Comput- er Science Volume: Vol.7128 Pages: 228-242
  • DOI: 10.1007/978-3-642-32205-1_19
  • ISBN: 9783642322044, 9783642322051
  • Peer Reviewed
• [Journal Article] Shape- Free Hybrid Image (2012)
  • Author(s): P. Sripian and Y. Yamaguchi
  • Journal Title: Proc. of NPAR Volume: - Pages: 11-19
  • DOI: 10.2312/PE/NPAR/NPAR12/011-019
  • Peer Reviewed
• [Journal Article] Stereoscopic 3DCG Animation Curriculum for New Anime Education (2012)
  • Author(s): Ayumi Miyai
  • Journal Title: 15th Intl. Conf. on Geometry and Graphics Volume: 121 Pages: 1-10
  • Peer Reviewed
• [Journal Article] A Tem- plate-Based Completion Framework for Videos with Dynamic Background (2012)
  • Author(s): T. Yatagawa and Y. Yamaguchi
  • Journal Title: Lecture Notes in Computer Science Volume: Vol.7432 Pages: 155-165
  • DOI: 10.1007/978-3-642-33191-6_16
  • ISBN: 9783642331909, 9783642331916
  • Peer Reviewed
• [Presentation] Developing Visual Cryptography for Authentication on Smartphones (2016)
  • Author(s): Ching-Nung Yang, Jung-Kuo Liao, Fu-Heng Wu, and Yasushi Yamaguchi
  • Organizer: EAI International Conference on Industrial IoT Technologies and Applications
  • Place of Presentation: Fortune Hotel Guangzhou（広州，中国）
  • Year and Date: 2016-03-25
  • Int'l Joint Research
• [Presentation] サイクロイド錯視による運動知覚と追従眼球運動への影響 (2015)
  • Author(s): 上田大志, 高橋孝介, 渡辺克己, 山口 泰
  • Organizer: 日本基礎心理学会第34回大会
  • Place of Presentation: 大阪樟蔭女子大学小阪キャンパス（大阪府東大阪市）
  • Year and Date: 2015-11-28
• [Presentation] Real-time Ray-traced Collision Detection for Deformable Objects (2015)
  • Author(s): Suiyan Li, Yasushi Yamaguchi
  • Organizer: 情報処理学会グラフィクスとCAD研究発表会
  • Place of Presentation: 神戸大学（兵庫県神戸市）
  • Year and Date: 2015-11-06
• [Presentation] Illusory motion perception and eye movements: a study of the cycloid illusion (2015)
  • Author(s): Hiroshi Ueda, Kohske Takahashi, Katsumi Watanabe, Yasushi Yamaguchi
  • Organizer: ECEM 2015
  • Place of Presentation: University of Vienna（ウィーン，オーストリア）
  • Year and Date: 2015-08-16
  • Int'l Joint Research
• [Presentation] レイヤーアニメーションのためのシームレスな法線マップ連結手法 (2015)
  • Author(s): 藤堂英樹, 山口 泰
  • Organizer: Visual Computing / グラフィクスとCADシンポジウム
  • Place of Presentation: 姫路市市民会館（兵庫県姫路市）
  • Year and Date: 2015-06-28
• [Presentation] Adding information does not necessarily help the motion perception: a study of the curtate cycloid illusion (2015)
  • Author(s): Hiroshi Ueda, Kohske Takahashi, Katsumi Watanabe, Yasushi Yamaguchi
  • Organizer: 7th International Conference on Knowledge and Smart Technology
  • Place of Presentation: The Tide Resort, Chonburi, Thailand
  • Year and Date: 2015-01-28 – 2015-01-31
• [Presentation] Practical Region Control in Projective Texture for Stylized Shading (2014)
  • Author(s): Muhammad Arief, Hideki Todo, Kunio Kondo, Koji Mikami, Yasushi Yamaguchi
  • Organizer: SIGGRAPH Asia 2014 Posters
  • Place of Presentation: Shenzhen Convention & Exhibition Center, Shenzhen, China
  • Year and Date: 2014-12-03 – 2014-12-06
• [Presentation] Texture Projection Control for Hand-Drawn Gradient Shading (2014)
  • Author(s): Muhammad Arief, Hideki Todo, Yasushi Yamaguchi, Koji Mikami, Kunio Kondo
  • Organizer: 日本図学会秋季大会
  • Place of Presentation: 東京藝術大学美術学部中央棟，東京都台東区
  • Year and Date: 2014-11-29 – 2014-11-30
• [Presentation] 拡張視覚復号型暗号の画質改善 (2014)
  • Author(s): 山口 泰
  • Organizer: 日本図学会秋季大会
  • Place of Presentation: 東京藝術大学美術学部中央棟，東京都台東区
  • Year and Date: 2014-11-29 – 2014-11-30
• [Presentation] 錯覚（ヒト視覚系の特徴）と画像処理技術への応用 (2014)
  • Author(s): 山口 泰
  • Organizer: 照明学会関西支部専門講習会「錯視のメカニズムとその応用」
  • Place of Presentation: 神戸大学工学部教育棟，兵庫県神戸市
  • Year and Date: 2014-11-17
  • Invited
• [Presentation] 眼と手の同時運動反応課題によるギャップ効果の考察 (2014)
  • Author(s): 上田大志, 高橋康介, 渡邊克巳, 山口泰
  • Organizer: 第六回多感覚研究会
  • Place of Presentation: 広島大学霞キャンパス，広島県広島市
  • Year and Date: 2014-11-11 – 2014-11-12
• [Presentation] スパース放射基底関数マップによるリアルタイム画像・動画編集 (2014)
  • Author(s): 谷田川達也, 山口 泰
  • Organizer: Visual Computing / グラフィクスとCADシンポジウム
  • Place of Presentation: 早稲田大学国際会議場，東京都新宿区
  • Year and Date: 2014-06-29 – 2014-06-30
• [Presentation] 陰影解析に基づく２次元イラスト画像のリライティング (2014)
  • Author(s): 藤堂英樹, 山口 泰
  • Organizer: Visual Computing / グラフィクスとCADシンポジウム
  • Place of Presentation: 早稲田大学国際会議場，東京都新宿区
  • Year and Date: 2014-06-29 – 2014-06-30
• [Presentation] Interference of manual reactions by concurrent saccades: an analysis of the saccadic and manual gap effect (2014)
  • Author(s): Hiroshi Ueda, Kohske Takahashi, Katsumi Watanabe, Yasushi Yamaguchi
  • Organizer: APCV 2014 Abstracts
  • Place of Presentation: Kagawa International Convention Hall, Takamatsu, Japan
  • Year and Date: 2014-06-19 – 2014-06-22
• [Presentation] 多面体メッシュの折り目と切れ目を含んだ可展形状近似 (2013)
  • Author(s): 高橋都子, 舘知宏, 山口 泰
  • Organizer: 日本図学会春季大会
  • Place of Presentation: 産業技術短期大学，兵庫
• [Presentation] Image Synthesis in Consideration of a Human Visual System (2013)
  • Author(s): Yasushi Yamaguchi
  • Organizer: The Visual Language of Technique between Science and Art (150th Anniversary of Politecnico di Milano)
  • Place of Presentation: Politecnico di Milano, Milan, Italy
  • Invited
• [Presentation] 編集シーンの変化を考慮した動画編集法 (2013)
  • Author(s): 谷田川達也, 山口 泰
  • Organizer: 第16回画像の認識・理解シンポジウム
  • Place of Presentation: 国立情報学研究所，東京
• [Presentation] Extended Visual Cryptography for Continuous-Tone Images - Effect of the Optimum Tone Mapping - (2013)
  • Author(s): Yasushi Yamaguchi
  • Organizer: The Asian Forum on Graphic Science
  • Place of Presentation: Zhongxia Garden Hotel, Dalian, China
  • Invited
• [Presentation] Image Synthesis & Processing for Human Visual System (2013)
  • Author(s): Yasushi Yamaguchi
  • Organizer: China-Japan Joint Workshop on Geometry and Graphics
  • Place of Presentation: Beijing Institute of Technology, Beijing, China
  • Invited
• [Presentation] 複数の秘密画像を扱う連続階調画像の視覚復号型暗号 (2013)
  • Author(s): 山口 泰
  • Organizer: 日本応用数理学会2013年度年会
  • Place of Presentation: アクロス福岡，福岡
• [Presentation] 非対称類似度行列の低ランク近似による時間連続性を考慮した動画編集法 (2013)
  • Author(s): 谷田川達也, 山口 泰
  • Organizer: 日本応用数理学会2013年度年会
  • Place of Presentation: アクロス福岡，福岡
• [Presentation] Extended Visual Cryptography Scheme for Multiple-Secret Continuous-Tone Images (2013)
  • Author(s): Yasushi Yamaguchi
  • Organizer: International Workshop on Digital-forensics and Watermarking
  • Place of Presentation: Auckland University of Technology, Auckland, New Zealand
  • Invited
• [Presentation] 複数の連続階調秘密画像を埋め込める拡張視覚復号暗号 (2013)
  • Author(s): 山口 泰
  • Organizer: 日本図学会秋季大会
  • Place of Presentation: ホテル大観，岩手
• [Presentation] 折り目と切れ目を利用した三角形メッシュの展開図作成について (2013)
  • Author(s): 高橋都子, 舘知宏, 山口 泰
  • Organizer: 情報処理学会グラフィクスとCAD研究発表会
  • Place of Presentation: 九州大学西新プラザ，福岡
• [Presentation] 動的背景を含む動画に対する補完手法の高速化 (2012)
  • Author(s): 谷田川達也
  • Organizer: Visual Computing - グラフィクスとCAD 合同シンポジウム
  • Place of Presentation: 早稲田大学国際会議場（東京）
• [Presentation] 物体形状に依存しないハイブリッド画像の作成手法 (2012)
  • Author(s): Peeraya Sripian
  • Organizer: 情報処理学会 グラフィクスとCAD研究会 第148回研究発表会
  • Place of Presentation: 九州大学西新プラザ（福岡）
• [Presentation] Shape-free hybrid image effects of artificial noise and complementary color (2012)
  • Author(s): Peeraya Sripian
  • Organizer: European Conference on Visual Perception
  • Place of Presentation: Alghero, Italy
• [Presentation] フレーム間の連続性を保持する動画編集法 (2012)
  • Author(s): 谷田川達也
  • Organizer: 情報処理学会 グラフィクスとCAD研究会 第149回研究発表会
  • Place of Presentation: 横浜国立大学教育文化ホール（横浜）
• [Book] Javaによる3DCG入門 (2015)
  • Author(s): 山口 泰
  • Total Pages: 166
  • Publisher: 朝倉書店
• [Patent(Industrial Property Rights)] 折り畳み構造物，ならびに，折り畳み構造物の製造方法，製造装置，及び，プログラム (2015)
  • Inventor(s): 舘 知宏, 山口 泰 他2名
  • Industrial Property Rights Holder: 舘 知宏, 山口 泰 他2名
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2015-160229
  • Filing Date: 2015-08-14
• [Patent(Industrial Property Rights)] 多面体メッシュから可展性の高い部分領域を生成する方法、当該方法を用いた多面体メッシュの可展化方法、及び、これらの方法を実行するコンピュータプログラム (2013)
  • Inventor(s): 山口 泰, 舘 知宏, 高橋 都子
  • Industrial Property Rights Holder: 山口 泰, 舘 知宏, 高橋 都子
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2013-100115
  • Filing Date: 2013-05-10
• [Patent(Industrial Property Rights)] 動画編集方法及び装置 (2012)
  • Inventor(s): 山口 泰, 谷田川達也
  • Industrial Property Rights Holder: 山口 泰, 谷田川達也
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2012-256274
  • Filing Date: 2012-11-22