Updated on 2023/11/09

写真a

 
IWATA Motoi
 
Organization
Graduate School of Informatics Department of Core Informatics Associate Professor
School of Engineering Department of Information Science
Title
Associate Professor
Affiliation
Institute of Informatics
Contact information
メールアドレス
Affiliation campus
Nakamozu Campus

Position

  • Graduate School of Informatics Department of Core Informatics 

    Associate Professor  2022.04 - Now

  • School of Engineering Department of Information Science 

    Associate Professor  2022.04 - Now

Degree

  • 博士(工学) ( Others )

  • 修士(工学) ( Others )

Research Areas

  • Informatics / Intelligent robotics

  • Informatics / Intelligent informatics

  • Informatics / Perceptual information processing

  • Humanities & Social Sciences / Educational technology

Research Interests

  • Learning support

  • Learning support systems

  • データハイディング

  • ステガノグラフィ

  • コミック工学

  • steganography

  • fingerprinting

  • digital watermarking

  • data hiding

  • 電子透かし

Research subject summary

  • コミック工学

  • 物体認識

  • 線画像検索

  • 画像検索

  • ステガノグラフィ

  • 電子透かし

  • Learning support

Research Career

  • comic computing

    contents recognition, estimation of readers' condition 

    2013.04 - Now 

  • image retrieval

    nearest neighbor search, hash, local likely arrangement hashing 

    2012.04 - Now 

  • object recognition

    exact matching of feature vectors, large-scale 3D specific object recognition 

    2012.04 - Now 

  • retrieval for line drawing

    HoG features, Bag-of-Features 

    2012.04 - Now 

  • digital watermarking

    copyright protection, data hiding, siginal processing, frequency transformation, visual perception psychology 

    1999.04 - Now 

  • steganography

    secret communication, data hiding, JPEG compression, image processing, visual perception psychology 

    1999.04 - Now 

  • electronic signature

    network security, long term security, signature history 

    1999.04 - 2012.03 

Professional Memberships

  • Association for Computing Machinery (ACM)

    2020.09 - Now   Overseas

  • The Imaging Society of Japan

    2014.06 - Now   Domestic

  • IEEE

    2013.07 - Now   Overseas

  • 映像情報メディア学会

    2000.04 - Now   Domestic

  • Society of Information theory and its applications

    1999.04 - 2010.12   Domestic

  • The Institute of Electronics, Information and Communication Engineers (IEICE)

    1997.04 - Now   Domestic

  • 映像情報メディア学会

  • 電子情報通信学会

  • 情報理論とその応用学会

  • IEEE

▼display all

Committee Memberships (off-campus)

  • 専門委員   電子情報通信学会 EMM研究会  

    2021.06 - Now 

  • 副委員長   電子情報通信学会 EMM研究会  

    2019.06 - 2021.06 

  • 専門委員   電子情報通信学会 EMM研究会  

    2017.06 - 2019.06 

  • 幹事補佐   電子情報通信学会 EMM研究会  

    2015.06 - 2017.06 

  • 編集委員(信学会和文論文誌A)   電子情報通信学会  

    2014.06 - 2018.06 

  • 編集委員   日本画像学会  

    2014.06 - Now 

  • 専門委員   電子情報通信学会 EMM研究会  

    2014.06 - 2015.06 

  • 幹事   情報ハイディング及びその評価基準委員会  

    2013.04 - 2019.05 

  • 専門委員   情報ハイディング及びその評価基準委員会  

    2011.04 - 2013.03 

  • 庶務幹事   映像情報メディア学会関西支部  

    2000.04 - 2002.04 

▼display all

Awards

  • IHC研究会主催第1回電子透かしコンテスト 高耐性賞

    2012.09   電子情報通信学会 EMM研究会 IHC研究会  

  • 平成11年電気関係学会関西支部連合大会奨励賞

    1999.11   電気関係学会関西支部  

Job Career (off-campus)

  • Osaka Metropolitan University   Graduate School of Informatics

    2022.04 - Now

  • Osaka Prefecture University   Graduate School of Engineering

    2016.04 - Now

  • Engineering, Osaka Prefecture Univ.

  • Osaka Prefecture Univ.

Papers

  • Intelligence Augmentation: Future Directions and Ethical Implications in HCI Reviewed International coauthorship

    Andrew Vargo, Benjamin Tag, Mathilde Hutin, Victoria Abou-Khalil, Shoya Ishimaru, Olivier Augereau, Tilman Dingler, Motoi Iwata, Koichi Kise, Laurence Devillers, Andreas Dengel

    Human-Computer Interaction – INTERACT 2023   14145 LNCS   644 - 649   2023.08( ISSN:0302-9743 ( ISBN:9783031422928

     More details

    Publishing type:Part of collection (book)   International / domestic magazine:International journal  

    DOI: 10.1007/978-3-031-42293-5_87

  • Perception Versus Reality: How User Self-reflections Compare to Actual Data Reviewed

    Hannah R. Nolasco, Andrew Vargo, Yusuke Komatsu, Motoi Iwata, Koichi Kise

    Human-Computer Interaction – INTERACT 2023   14144 LNCS   665 - 674   2023.08( ISSN:0302-9743 ( ISBN:9783031422850

     More details

    Publishing type:Part of collection (book)   International / domestic magazine:International journal  

    DOI: 10.1007/978-3-031-42286-7_37

  • Estimation of Unknown Words Using Speech and Eye Gaze When Reading Aloud Comics Reviewed

    Taro Takaike, Motoi Iwata, Koichi Kise

    Pattern Recognition, Computer Vision, and Image Processing. ICPR 2022 International Workshops and Challenges   13644 LNCS   91 - 106   2023.08( ISSN:03029743 ( ISBN:9783031377419

     More details

    Publishing type:Part of collection (book)   International / domestic magazine:International journal  

    DOI: 10.1007/978-3-031-37742-6_7

  • Face Image Generation of Anime Characters Using an Advanced First Order Motion Model with Facial Landmarks Reviewed

    Junki OSHIBA, Motoi IWATA, Koichi KISE

    IEICE Transactions on Information and Systems   E106.D ( 1 )   22 - 30   2023.01( ISSN:09168532

     More details

    Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    <p>Recently, deep learning for image generation with a guide for the generation has been progressing. Many methods have been proposed to generate the animation of facial expression change from a single face image by transferring some facial expression information to the face image. In particular, the method of using facial landmarks as facial expression information can generate a variety of facial expressions. However, most methods do not focus on anime characters but humans. Moreover, we attempted to apply several existing methods to anime characters by training the methods on an anime character face dataset; however, they generated images with noise, even in regions where there was no change. The first order motion model (FOMM) is an image generation method that takes two images as input and transfers one facial expression or pose to the other. By explicitly calculating the difference between the two images based on optical flow, FOMM can generate images with low noise in the unchanged regions. In the following, we focus on the aspect of the face image generation in FOMM. When we think about the employment of facial landmarks as targets, the performance of FOMM is not enough because FOMM cannot use a facial landmark as a facial expression target because the appearances of a face image and a facial landmark are quite different. Therefore, we propose an advanced FOMM method to use facial landmarks as a facial expression target. In the proposed method, we change the input data and data flow to use facial landmarks. Additionally, to generate face images with expressions that follow the target landmarks more closely, we introduce the landmark estimation loss, which is computed by comparing the landmark detected from the generated image with the target landmark. Our experiments on an anime character face image dataset demonstrated that our method is effective for landmark-guided face image generation for anime characters. Furthermore, our method outperformed other methods quantitatively and generated face images with less noise.</p>

    DOI: 10.1587/transinf.2022mup0004

  • Learning Cyclotron: An Ecosystem of Knowledge Circulation Reviewed International coauthorship

    Andrew Vargo, Motoi Iwata, Mathilde Hutin, Sofiya Kobylyanskaya, Ioana Vasilescu, Olivier Augereau, Ko Watanabe, Shoya Ishimaru, Benjamin Tag, Tilman Dingler, Koichi Kise, Laurence Devillers, Andreas Dengel

    UbiComp/ISWC '22 Adjunct: Adjunct Proceedings of the 2022 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the 2022 ACM International Symposium on Wearable Computers   308 - 312   2022.09

     More details

    Publishing type:Research paper (international conference proceedings)   International / domestic magazine:International journal  

    DOI: 10.1145/3544793.3560383

  • Towards Guided-Breath as an Intervention Within Computer-Assisted Learning Reviewed

    Kanta Yamaoka, Andrew Vargo, Motoi Iwata, Koichi Kise

    UbiComp/ISWC '22 Adjunct: Adjunct Proceedings of the 2022 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the 2022 ACM International Symposium on Wearable Computers   136 - 137   2022.09( ISBN:9781450394239

     More details

    Publishing type:Research paper (international conference proceedings)   International / domestic magazine:International journal  

    DOI: 10.1145/3544793.3560335

  • Exploring Sensor Modalities to Capture User Behaviors for Reading Detection Reviewed

    Md. Rabiul ISLAM, Andrew W. VARGO, Motoi IWATA, Masakazu IWAMURA, Koichi KISE

    IEICE Transactions on Information and Systems   E105.D ( 9 )   1629 - 1633   2022.09( ISSN:0916-8532

     More details

    Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.1587/transinf.2020zdl0003

  • Evaluating Contrastive Learning for Fine-grained Reading Detection Reviewed

    Md. Rabiul Islam, Andrew W. Vargo, Motoi Iwata, Masakazu Iwamura, and Koichi Kise

    Proceedings of 2022 12th International Congress on Advanced Applied Informatics (IIAI-AAI)   430 - 435   2022.07( ISSN:2472-0070 ( ISBN:9781665497558

     More details

    Publishing type:Research paper (international conference proceedings)   International / domestic magazine:International journal  

    DOI: 10.1109/iiaiaai55812.2022.00091

  • Helping Mobile Learners Know Unknown Words through their Reading Behavior Reviewed

    Riku Higashimura, Andrew Vargo, Motoi Iwata, Koichi Kise

    CHI EA '22: Extended Abstracts of the 2022 CHI Conference on Human Factors in Computing Systems   1 - 5   2022.04

     More details

    Publishing type:Research paper (international conference proceedings)   International / domestic magazine:International journal  

    DOI: 10.1145/3491101.3519620

  • Confidence Estimation via Wrist Movement Reviewed

    Seiya Tanaka, Andrew W. Vargo, Motoi Iwata, Koichi Kise

    UbiComp/ISWC '21 Adjunct: Adjunct Proceedings of the 2021 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2021 ACM International Symposium on Wearable Computers   76 - 77   2021.09

     More details

    Publishing type:Research paper (international conference proceedings)   International / domestic magazine:International journal  

    DOI: 10.1145/3460418.3479286

  • Self-supervised Learning for Reading Activity Classification Reviewed

    Md. Rabiul Islam, Shuji Sakamoto, Yoshihiro Yamada, Andrew W. Vargo, Motoi Iwata, Masakazu Iwamura, Koichi Kise

    Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies   5 ( 3 )   1 - 22   2021.09

     More details

    Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    Reading analysis can relay information about user's confidence and habits and can be used to construct useful feedback. A lack of labeled data inhibits the effective application of fully-supervised Deep Learning (DL) for automatic reading analysis. We propose a Self-supervised Learning (SSL) method for reading analysis. Previously, SSL has been effective in physical human activity recognition (HAR) tasks, but it has not been applied to cognitive HAR tasks like reading. We first evaluate the proposed method on a four-class classification task on reading detection using electrooculography datasets, followed by an evaluation of a two-class classification task of confidence estimation on multiple-choice questions using eye-tracking datasets. Fully-supervised DL and support vector machines (SVMs) are used as comparisons for the proposed SSL method. The results show that the proposed SSL method is superior to the fully-supervised DL and SVM for both tasks, especially when training data is scarce. This result indicates the proposed method is the superior choice for reading analysis tasks. These results are important for informing the design of automatic reading analysis platforms.

    DOI: 10.1145/3478088

  • Quality Assessment of Crowdwork via Eye Gaze: Towards Adaptive Personalized Crowdsourcing Reviewed

    Md. Rabiul Islam, Shun Nawa, Andrew Vargo, Motoi Iwata, Masaki Matsubara, Atsuyuki Morishima, Koichi Kise

    Human-Computer Interaction – INTERACT 2021   12933 LNCS   104 - 113   2021.08( ISSN:0302-9743

     More details

    Publishing type:Part of collection (book)   International / domestic magazine:International journal  

    DOI: 10.1007/978-3-030-85616-8_8

  • Digital Watermarking Method for Printed Matters Using Deep Learning for Detecting Watermarked Areas Reviewed

    Hiroyuki IMAGAWA, Motoi IWATA, and Koichi KISE

    IEICE Transactions on Information and Systems 雑誌 The Institute of Electronics, Information and Communication Engineers (IEICE)   E104-D ( 1 )   34 - 42   2021.01

     More details

    Kind of work:Joint Work  

  • Mobile Vocabulometer: A Context-based Learning Mobile Application to Enhance English Vocabulary Acquisition Reviewed

    Kohei Yamaguchi, Motoi Iwata, Andrew Vargo, Koichi Kise

    Adjunct Proceedings of the 2020 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2020 ACM International Symposium on Wearable Computers   156 - 159   2020.09

     More details

    Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1145/3410530.3414406

    Other URL: https://dblp.uni-trier.de/db/conf/huc/ubicomp2020ap.html#YamaguchiIVK20

  • Preliminary Experiments Toward Personalized Nudging Strategies Extensive Reading of English Reviewed

    Sadafumi Tonomoto, Motoi Iwata, Koichi Kise

    Proceedings of COBI2020   1   1 - 8   2020.04

     More details

    Publishing type:Research paper (international conference proceedings)   International / domestic magazine:International journal  

  • Estimation of Student's Engagement Based on the Posture Reviewed

    Kazuaki Nomura, Motoi Iwata, Olivier Augereau, Koichi Kise

    UbiComp/ISWC '19 Adjunct: Adjunct Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable Computers   164 - 167   2019.09

     More details

    Publishing type:Research paper (international conference proceedings)   International / domestic magazine:International journal  

    DOI: 10.1145/3341162.3343767

  • A Method of Trademark Search Based onthe Automatically Assigned Codes of Vienna Classification and Figure Shapes Reviewed

    Riki Kudo, Motoi Iwata, Masakazu Iwamura, Koichi Kise

    Journal of the Imaging Society of Japan   58 ( 3 )   274 - 283   2019.06

     More details

    Publishing type:Research paper (scientific journal)   International / domestic magazine:Domestic journal  

    DOI: 10.11370/isj.58.274

  • Estimation of Student’s Engagement Using a Smart Chair Reviewed

    Kazuaki Nomura, Motoi Iwata, Olivier Augereau, Koichi Kise

    UbiComp '18: Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers   186 - 189   2018.10

     More details

    Publishing type:Research paper (international conference proceedings)   Kind of work:Joint Work   International / domestic magazine:International journal  

    DOI: 10.1145/3267305.3267611

  • Keystroke tell you how confident you are: A new vocabulary acquisition tool Reviewed

    Takanori Maruichi, Olivier Augereau, Motoi Iwata, Koichi Kise

    UbiComp '18: Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers   154 - 157   2018.10

     More details

    Publishing type:Research paper (international conference proceedings)   Kind of work:Joint Work   International / domestic magazine:International journal  

    DOI: 10.1145/3267305.3267609

  • Similar Trademark Searching Method Considering Similarity Between Vienna Classification and Figures Reviewed

    Riki KUDO, Motoi IWATA, Masakazu IWAMURA, Koichi KISE

    Journal of the Imaging Society of Japan   57 ( 5 )   533 - 536   2018.10

     More details

    Publishing type:Research paper (scientific journal)   Kind of work:Joint Work   International / domestic magazine:Domestic journal  

    DOI: 10.11370/isj.57.533

  • 高速・高精度を実現した類似商標画像検索システムの提案 Reviewed

    工藤 力,岩田 基,岩村 雅一,黄瀬 浩一

    日本画像学会誌 雑誌   57 ( 4 )   403 - 412   2018.08

     More details

    Kind of work:Joint Work  

  • A Survey of Comics Research in Computer Science Reviewed

    O. Augereau, M. Iwata and K. Kise

    Journal of Imaging 雑誌   4 ( 7 )   1 - 19   2018.06

     More details

    Kind of work:Joint Work  

  • Information Hiding and Its Criteria for Evaluation Reviewed

    K. Iwamura, M. Kawamura, M. Kuribayashi, M. Iwata, H. Kang, S. Gohshi, and A. Nishimura

    IEICE Trans. INF. & SYST. 雑誌   100 ( 1 )   2 - 12   2017.01

     More details

    Kind of work:Joint Work  

  • Practical Watermarking Method Estimating Watermarked Region from Recaptured Videos on Smartphone Reviewed

    M. Iwata, N. Mizushima, and K. Kise

    IEICE Trans. INF. & SYST. 雑誌   100 ( 1 )   24 - 32   2017.01

     More details

    Kind of work:Joint Work  

  • Speech balloon and speaker association for comics and manga understanding Reviewed

    C. Rigaud, N. L. Thanh, J.-C. Burie, J.-M. Ogier, M. Iwata, E. Imazu, and K. Kise

    Proc. of the 13th International Conference on Document Analysis and Recognition 雑誌   351 - 355   2015.08

     More details

    Kind of work:Joint Work  

  • 均等色空間からRGB表色系への変換に起因する抽出誤りを防止した電子透かし法 Reviewed

    岩田基,江口健太,黄瀬浩一

    日本画像学会誌 雑誌   54 ( 4 )   284 - 291   2015.08

     More details

    Kind of work:Joint Work  

  • 透かしの痕跡を利用して再撮影動画像から透かし入り動画像の領域を推定する電子透かし法の実装実験 Reviewed

    岩田基,黄瀬浩一

    日本画像学会誌 雑誌   53 ( 5 )   436 - 447   2014.10

     More details

    Kind of work:Joint Work  

  • Memory specs — an annotation system on Google Glass using document image retrieval Reviewed

    K. Tanaka, K. Kunze, and M. Iwata, and K. Kise

    Proc. of the 2014 ACM Conference on Pervasive and Ubiquitous Computing Adjunct Publication 雑誌   267 - 270   2014.09

     More details

    Kind of work:Joint Work  

  • 単一楽器演奏曲を対象とするサンプリング音を用いた音楽電子透かし法 Reviewed

    村田晴美,荻原昭夫,岩田基,汐崎陽

    電子情報通信学会論文誌 雑誌   J96-D ( 4 )   941 - 951   2013.04

     More details

    Kind of work:Joint Work  

  • 人物の流れに着目した大局的な行動パターンの逐次学習・認識 Reviewed

    宜保達哉,青木茂樹,宮本貴朗,岩田 基,汐崎 陽

    電気学会論文誌(D) 雑誌   131 ( 6 )   820 - 828   2011.06

     More details

    Kind of work:Joint Work  

  • Digital watermarking method warranting the lower limit of image quality of watermarked images Reviewed

    Motoi Iwata, Tomoo Kanaya, Akira Shiozaki, and Akio Ogihara

    EURASIP Journal on Advances in Signal Processing 雑誌 Hindawi Publishing Corporation   2010   2010.07

     More details

    Kind of work:Joint Work  

  • 色差成分の分散を用いて微小な幾何学的改変に耐性を持たせた電子透かし法 Reviewed

    崎山圭, 岩田基, 荻原昭夫, 汐崎陽

    電子情報通信学会論文誌 A 雑誌   J92-A ( 3 )   189 - 192   2009.03

     More details

    Kind of work:Joint Work  

  • Reversible watermarking method for JPEG images Reviewed

    A. Shiozaki, M. Iwata, and A. Ogihara

    IEICE Tras. Inf. & Syst. 雑誌   E91-D ( 7 )   2068 - 2071   2008.07

     More details

    Kind of work:Joint Work  

  • ロケーションマップの圧縮効率を高めた可逆電子透かし法 Reviewed

    関屋宏光, 岩田基, 荻原昭夫, 汐崎陽

    電子情報通信学会論文誌 D 雑誌   J91-D ( 6 )   1679 - 1683   2008.06

     More details

    Kind of work:Joint Work  

  • Correlation-based Video Watermarking Method using Inter-Frame Similarity Reviewed

    M. Yamamoto, A. Shiozaki, M. Iwata, and A. Ogihara

    IEICE Trans. Fundamentals 雑誌   E89-A ( 1 )   186 - 193   2006.01

     More details

    Kind of work:Joint Work  

  • Information Hiding using Operation of Modulo 3 in JPEG Coded Domain Reviewed

    T. Koga, A. Shiozaki, M. Iwata and A. Ogihara

    Electronics Letters 雑誌   41   957 - 958   2005.04

     More details

    Kind of work:Joint Work  

  • Digital steganography utilizing features of JPEG images Reviewed

    M. Iwata, K. Miyake and A. Shiozaki

    IEICE Trans. Fundamentals. 雑誌   E87-A ( 4 )   929 - 936   2004.04

     More details

    Kind of work:Joint Work  

  • Digital watermarking method to embed index data into JPEG images Reviewed

    M. Iwata, K. Miyake and A. Shiozaki

    IEICE Trans. Fundamentals. 雑誌   E85-A ( 10 )   2267 - 2271   2002.10

     More details

    Kind of work:Joint Work  

  • Index data embedding method utilizing quantitative relation of wavelet coefficients Reviewed

    M. Iwata, and A. Shiozaki

    IEICE Trans. Fundamentals. 雑誌   E84-A ( 10 )   2508 - 2513   2001.10

     More details

    Kind of work:Joint Work  

  • Watermarking method for embedding index data into images utilizing features of wavelet transform Reviewed

    M. Iwata, and A. Shiozaki

    IEICE Trans. Fundamentals. 雑誌   E84-A ( 7 )   1772 - 1778   2001.07

     More details

    Kind of work:Joint Work  

  • Hilbert 走査を用いた鍵の生成と局所探索により幾何学的改変に対する耐性を高めた電子透かし Reviewed

    岩田基,汐崎陽

    電子情報通信学会論文誌 D-Ⅱ 雑誌   J84-D-Ⅱ ( 7 )   1351 - 1359   2001.07

     More details

    Kind of work:Joint Work  

  • A digital image watermarking scheme withstanding malicious attacks Reviewed

    A. Shiozaki, J. Tanimoto, and M. Iwata

    IEICE Trans. Fundamentals. 雑誌   E83-A ( 10 )   2015 - 2022   2000.10

     More details

    Kind of work:Joint Work  

  • Text-line extraction as selection of paths in the neighbor graph Reviewed

    K. Kise, M. Iwata, A. Dengel, and K. Matsumoto

    DOCUMENT ANALYSIS SYSTEMS: THEORY AND PRACTICE 雑誌   1655   225 - 239   1999.12

     More details

    Kind of work:Joint Work  

  • 隣接グラフを用いた欧文文書画像からの文字列抽出 Reviewed

    岩田基,黄瀬浩一,松本啓之亮

    情報処理学会論文誌 雑誌   40 ( 8 )   3239 - 3248   1999.08

     More details

    Kind of work:Joint Work  

  • Segmentation of page images using the area Voronoi diagram Reviewed

    K. Kise, A. Sato, and M. Iwata

    Computer Vision and Image Understanding, (インパクトファクター0.938 (99年), 0.753(98年)) 雑誌   70 ( 3 )   370 - 382   1998.06

     More details

    Kind of work:Joint Work  

▼display all

Books and Other Publications

  • Pixel Value Adjustment for Digital Watermarking Using Uniform Color Space

    Motoi Iwata, Takao Ikemoto, Akira Shiozaki and Akio Ogihara( Role: Joint author)

    InTech  2012.05 

  • 情報ハイディング技術

    岩田 基, 汐崎 陽( Role: Joint author)

    画像電子学会  2008.02 

MISC

  • Toward the realization of a digital watermarking method against print-cam attack using deep learning International journal

    Image Laboratory   31 ( 6 )   67 - 72   2020.06( ISSN:0915-6755

     More details

    Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   International / domestic magazine:Domestic journal  

    CiNii Article

  • How to display comics on smartphones based on eye tracking International journal

    Motoi Iwata, Olivier Augereau, Koichi Kise

    Image Laboratory   30 ( 8 )   21 - 26   2019.08( ISSN:0915-6755

     More details

    Authorship:Lead author   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   International / domestic magazine:Domestic journal  

    CiNii Article

  • 私のブックマーク「コミック工学(Comic Computing)」 International journal

    松下光範,山西良典,松井勇佑,岩田基,上野未貴,西原陽子,中村聡史

    人工知能学会誌   32 ( 6 )   999 - 1007   2017.11

     More details

    Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Kind of work:Joint Work   International / domestic magazine:Domestic journal  

  • 電子透かし International journal

    岩田基

    画像電子学会 画像電子学会誌   39 ( 6 )   875 - 877   2010.11

     More details

    Authorship:Lead author   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Kind of work:Single Work   International / domestic magazine:Domestic journal  

  • 電子透かし International journal

    岩田基

    画像電子学会 画像電子学会誌   37 ( 6 )   853 - 854   2008.11

     More details

    Authorship:Lead author   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Kind of work:Single Work   International / domestic magazine:Domestic journal  

  • 電子透かし International journal

    岩田 基, 汐崎 陽

    画像電子学会 画像電子学会誌   35 ( 6 )   737 - 738   2006.11

     More details

    Authorship:Lead author   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Kind of work:Joint Work   International / domestic magazine:Domestic journal  

▼display all

Presentations

  • text-to-imageモデルによる生成画像を用いた英単語学習の提案と画像で表現可能な英単語の調査 Domestic conference

    中島 悠太, 岩田 基, 黄瀬 浩一

    第39回情報処理学会教育学習支援情報システム研究会(CLE)   2023.03  情報処理学会

     More details

    Presentation type:Oral presentation (general)  

    Venue:福岡(ハイブリッド開催)  

  • 英単語学習を長期的に継続するための適応型学習システムの開発 Domestic conference

    岩下 雄一郎, 岩田 基, Andrew W. Vargo, 黄瀬 浩一

    2023年電子情報通信学会総合大会  2023.03  電子情報通信学会

     More details

    Presentation type:Oral presentation (general)  

    Venue:埼玉県  

  • 再撮影に対して頑健な3D U-Netに基づいた動画像電子透かし法の検討 Domestic conference

    高橋 涼太, 岩田 基, 黄瀬 浩一

    電子情報通信学会マルチメディア情報ハイディング・エンリッチメント研究会 (EMM)   2023.03  電子情報通信学会

     More details

    Presentation type:Oral presentation (general)  

    Venue:長崎県  

  • モバイル学習者の読書行動に基づく未知単語推定 Domestic conference

    東村 理功, Andrew, W. Vargo, 岩田 基, 黄瀬 浩一

    第21回情報科学技術フォーラム(FIT2022)  2022.09 

     More details

    Presentation type:Oral presentation (general)  

  • Estimation of Unknown Words Using Speechand Eye Gaze When Reading Aloud Comics International conference

    Taro Takaike, Motoi Iwata and Koichi Kise

    The 5th International Workshop on coMics ANalysis, Processing and Understanding  2022.08  ICPR2022 (The 26th International Conference on Pattern Recognition)

     More details

    Presentation type:Oral presentation (general)  

    Venue:Montréal Québec, Canada  

  • スマートフォンを用いた読書活動データからの未知単語推定 Domestic conference

    東村 理功, 岩田 基, 黄瀬 浩一

    2022年 電子情報通信学会 総合大会  2022.03  電子情報通信学会

     More details

    Presentation type:Oral presentation (general)  

    Venue:オンライン  

  • 音読音声と視線情報を用いた漫画英訳本の理解度推定 Domestic conference

    高池 太郎,岩田 基,黄瀬 浩一

    2022年 電子情報通信学会 総合大会  2022.03  電子情報通信学会

     More details

    Presentation type:Oral presentation (general)  

    Venue:オンライン  

  • マルチメディアVocabulometerによる動画の字幕を利用した英単語学習 Domestic conference

    山口 航平, 岩田 基, Andrew Vargo, 黄瀬 浩一

    第36回情報処理学会教育学習支援情報システム(CLE)研究会  2022.03  情報処理学会

     More details

    Presentation type:Oral presentation (general)  

    Venue:オンライン  

  • 陰影付き線画を用いた光源位置推定

    鶴田 あおい, 岩田 基, 黄瀬 浩一

    第5回コミック工学研究会  2021.03 

     More details

    Presentation type:Oral presentation (general)  

  • 視線情報と座圧情報を用いた多読時の漫画英訳本に対する興味度推定

    高池 太郎, 岩田 基, 黄瀬 浩一

    第5回コミック工学研究会  2021.03 

     More details

    Presentation type:Oral presentation (general)  

  • 視線情報に基づいたクラウドワークの品質評価 Domestic conference

    名和 俊, Islam Md. Rabiul, Andrew Vargo, 岩田 基, 松原 正樹, 森嶋 厚行, 黄瀬 浩一

    2021年 電子情報通信学会 総合大会  2021.03  電子情報通信学会

     More details

    Presentation type:Oral presentation (general)  

  • 陰影付き線画を用いた光源位置推定 Domestic conference

    鶴田 あおい,岩田 基,黄瀬 浩一

    第5回コミック工学研究会  2021.03  電子情報通信学会 ヒューマンコミュニケーショングループ 第二種時限研究会 コミック工学研究会

     More details

    Presentation type:Poster presentation  

  • 視線情報と座圧情報を用いた多読時の漫画英訳本に対する興味度推定 Domestic conference

    高池 太郎,岩田 基,黄瀬 浩一

    第5回コミック工学研究会  2021.03  電子情報通信学会 ヒューマンコミュニケーショングループ 第二種時限研究会 コミック工学研究会

     More details

    Presentation type:Poster presentation  

  • Reading Activity Classification Using Self-supervised Deep Learning

    Md. Rabiul Islam, Shuji Sakamoto, Yoshihiro Yamada, Andrew Vargo, Motoi Iwata, Masakazu Iwamura, Koichi Kise

    第191回ヒューマンコンピュータインタラクション研究会  2021.01 

     More details

    Presentation type:Oral presentation (general)  

  • Reading Activity Classification Using Self-supervised Deep Learning Domestic conference

    Md. Rabiul Islam, Shuji Sakamoto, Yoshihiro Yamada, Andrew Vargo, Motoi Iwata, Masakazu Iwamura, Koichi Kise

    SIG Human-Computer Interaction, IPSJ  2021.01  Information Processing Society of Japan

     More details

    Presentation type:Poster presentation  

  • Automatic Landmark-guided Face Image Generation for Anime Characters Using C2GAN International conference

    Junki Oshiba, Motoi Iwata, and Koichi Kise

    The 4th International Workshop on coMics ANalysis, Processing and Understanding  2021.01  The International Association for Pattern Recognition (IAPR)

     More details

    Presentation type:Poster presentation  

  • Manga Vocabulometer, A new support system for extensive reading with Japanese mangatranslated into English International conference

    Jin Kato, Motoi Iwata, Koichi Kise

    The 4th International Workshop on coMics ANalysis, Processing and Understanding  2021.01  The International Association for Pattern Recognition (IAPR)

     More details

    Presentation type:Poster presentation  

  • Preliminary Experiments Toward Personalized Nudging Strategies Extensive Reading of English International conference

    Sadafumi Tonomoto, Motoi Iwata, Koichi Kise

    CHI2020 Workshop on Detection and Design for Cognitive Biases in People and Computing Systems  2020.04 

     More details

    Presentation type:Poster presentation  

  • C2GANを用いたランドマークに基づくアニメキャラクタの顔画像自動生成手法

    大芝 潤気, 岩田 基, 黄瀬 浩一

    第3回コミック工学研究会  2020.03 

     More details

    Presentation type:Oral presentation (general)  

  • 読書行動識別のためのSelf-supervised Learningの実験的検討 (ヒューマン情報処理)

    坂本 周司, 山田 良博, 岩村 雅一, 岩田 基, 黄瀬 浩一

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報  2019.12  電子情報通信学会

  • 英語多読学習支援のための Manga Vocabulometer の開発 Domestic conference

    大工 勇樹, 岩田 基, 黄瀬 浩一

    第2回コミック工学研究会発表会  2019.10 

     More details

    Presentation type:Oral presentation (general)  

  • 位置検出に深層学習を利用した印刷物用電子透かし法 Domestic conference

    今川 寛之, 岩田 基, 黄瀬 浩一

    電子情報通信学会 EMM研究会  2019.09 

     More details

    Presentation type:Oral presentation (general)  

  • Digital watermarking method against print-cam attack using deep learning for synchronization

    2019.09 

  • Estimation of Student's Engagement witha Pressure Mat and a Web Camera Domestic conference

    Kazuaki Nomura, Olivier Augereau, Motoi Iwata, Koichi Kise

    2019.07 

     More details

    Presentation type:Oral presentation (general)  

  • Estimation of Student's Engagement with a Pressure Mat and a Web Camera

    野村 和朗, Olivier Augereau, 岩田 基, 黄瀬 浩一

    人工知能学会 先進的学習科学と工学研究会(ALST)  2019.07 

     More details

    <br />
    It is important for teachers to grasp students’ engagement in order to improve the quality of lectures. When they find that their students are not engaged in the lecture, they can give advice to the students to pay attention to the lecture. However, in the e-learning environment, there is no teacher to grasp the student’s engagement. So if the student loses his engagement, no one can help him to regain it. It may cause ineffective learning. The purpose of this study is to grasp the student’s engagement by using a pressure mat and web camera. We recorded the students’ postural data, that is upper body pressure distribution and upper body pose information, while they were taking e-learning lectures. In order to get the body to pose information from a web camera, we used a human pose estimation library called OpenPose. Then we extracted 38 features from upper body pressure distribution and 33 features from upper body pose information for every minute. We selected effective features by using the Forward Stepwise Selection. Lastly, we estimate whether he or she was engaged in or not with a Support Vector Machine. As a result, the average accuracy was 79.3% for student-dependent estimation. This result shows it is possible to predictthe student’s engagement automatically.

  • Convolutional Neural Network を用いた樹木画の画型分類の改善 Domestic conference

    薗田 統輔, 岩田 基, 稲富 宏之, 黄瀬浩一

    電子情報通信学会 PRMU研究会  2019.03 

     More details

    Presentation type:Oral presentation (general)  

  • Improvement of Tree-Drawing Classification Using Convolutional Neural Network

    2019.03 

  • 視点情報を用いた電子コミックの表示方法 (パターン認識・メディア理解)

    松原 瑞氣, Augereau Olivier, 岩田 基, 黄瀬 浩一

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報  2016.03  電子情報通信学会

     More details

    近年,多くの人がスマートフォンなどの小型端末を用いて,電子コミックを読んでいる.小型端末の画面 に電子コミックの 1 ページ全体を表示すると,小さな文字が読めない場合や,絵が見えにくい場合がある.本稿では, 事前に記録された電子コミックを読んでいる際の視点を用いて,電子コミックを拡大表示する手法を提案する.提案 手法により,小型端末の画面でも見やすい縮尺で電子コミックを表示することが可能となる.また,本稿では被験者 に提案手法を用いて電子コミックを読んでもらうことで,その使いやすさを調査する.その結果,提案手法により, 文字や絵が見やすい大きさでの表示が可能であることが分かった.また,今後の課題として,拡大率を自動で最適な 値にする機能が必要であることが分かった.

  • 画像検索を用いて位置検出用マーカのない印刷物から透かしを抽出できる電子透かし法

    小川 広晃, 岩田 基, 黄瀬 浩一

    2016年 暗号と情報セキュリティシンポジウム予稿集  2016.01 

     More details

    電子透かしを用いて,印刷物に人間には認識できないように情報を埋め込み,それをスマートフォンで撮影して情報を取り出す手法について検討する.SCIS2013 に投稿した手法を基に手法の改良を行った.従来の電子透かし法では位置検出のためにマーカや,枠線をつける必要があった.本来,電子透かしの利点の一つは,見た目を損なわないという点にあるのだが,マーカや,枠線をつけることはその利点と相反している.本稿では,この問題点を解決するために,位置検出の手法を改善し,画像に何も付与せずに位置検出し,透かしから情報を取り出す手法を提案する.画像に何も付与せずに位置検 出を行うために,画像検索を用いて撮影画像内にのどの位置に透かし入り画像が存在するのかを検出し,位置検出を行う.画像検索は計算コストが高いため,位置検出はスマートフォン上でなくサーバ上で行っている.位置検出法を変更した結果,従来法と比べ処理時間について従来法が0.34 秒だったのに対して0.9 秒を要するようになったものの,同等の抽出率を保持できた.

  • スマートフォンを用いた透かし入り動画から透かし領域を推定する電子透かし法の性能評価

    水島 尚良, 岩田 基, 黄瀬 浩一

    2016年暗号と情報セキュリティシンポジウム予稿集  2016.01 

     More details

    <br />
    近年,スマートフォンやデジタルサイネージ上での広告などが普及している. 電子透かしを用いて動画に対し付加情報を埋め込んで透かし入り動画を作成し,スマートフォンで再撮影して情報を取り出せる既存の手法に,岩田らの手法がある. 岩田らは透かし入り動画にスマートフォンをかざすことによって関連情報にアクセスできるようにすることを目的としており, iPhone5sで透かし入り動画を撮影して透かしを抽出し,性能を評価している. 岩田らの手法では今後の課題の1つとして,スマートフォンでの撮影時の手振れの影響の軽減が挙げられていた. これに対し,iPhone6sPlusには光学手振れ補正機能が搭載されており,撮影時の手振れの影響の軽減が見込まれる. また,岩田らの性能評価ではノートPC上での映像を対象としていたため,より実用に近い,70インチのサイネージを実験に使用する. 以上より,本稿では,サイネージ上で再生した透かし入り動画をiPhone6sPlusで撮影して透かしを抽出し,性能を評価する.

  • Discussing of learning method for labeling manga characters

    IMAZU Eiki, IWATA Motoi, KISE Koichi

    Technical report of IEICE. PRMU  2015.03  The Institute of Electronics, Information and Communication Engineers

     More details

    In this paper, I propose a new method to train similarity for labeling characters' ID to manga character regions. In manga, manga characters are important elements. If they can be retrieved, it's possible to meet user's demand. Labeling to manga characters is difficult with simple pattern matching because the manga characters have the various directions of the faces and expressions. Conventional method's problem is labeling many manga characters. In addition, human have to choose many kinds of face data. In this paper, the proposed method employs pool-based active learning to solves these problems. Pool-based active learning has an advantage to solve the problem when obtaining samples with labels requires quite higher cost than the cost to obtain samples without labels. I used our method for labeling experiment and show its advantages.

  • 早期棄却と早期認識を用いた文書画像検索の提案

    宮沢 嘉希, 岩田 基, 岩村 雅一, 黄瀬 浩一

    画像の認識・理解シンポジウム(MIRU2014)  2014.07 

  • Google Glass で動作するポスターアノテーションシステム

    田中 克磨, カイ クンツェ, 岩田 基, 岩村 雅一, 黄瀬 浩一

    画像の認識・理解シンポジウム(MIRU2014)  2014.07 

  • 早期棄却と早期認識による文書画像検索の高速化

    宮沢 嘉希, 岩田 基, 岩村 雅一, 黄瀬 浩一

    電子情報通信学会技術研究報告  2014.05 

     More details

    高速な文書画像検索手法の一つに,LLAH がある.LLAH は高速・高精度な文書画像検索を実現できる一 方,図表やグラフを多く含む文書を対象としたとき,精度が著しく低下するという欠点がある.一方,幅広い対象に 適用可能な画像検索手法として,SIFT などの局所特徴量を用いた手法があるが,低速であるという欠点がある.本 稿では,局所特徴量を用いた画像検索手法に,早期認識と早期棄却の二つの概念を導入することで,幅広い対象に適 用可能で,なおかつ高速・高精度な文書画像検索手法を提案する.早期認識は,計算コストの少ない処理を繰り返し, 検索に十分な証拠が得られた時点で処理を終了することで達成する.早期棄却は,少ない計算コストの処理から,検 索に有効ではない特徴抽出の範囲を決定し,それを破棄することで実現する.実験の結果,1 万ページのデータベー スに対して,精度94%,処理時間45.6[ms] で検索可能であることが分かった.

  • Digital watermarking for JPEG images using uniform color space

    EGUCHI Kenta, IWATA Motoi, KISE Koichi

    2014.03  The Institute of Electronics, Information and Communication Engineers

     More details

    The problems for practical applications of digital watermarking are reducing the degradation in image quality by embedding watermark and resistance to the JPEG compression. Iwata et al. proposed a digital watermarking method which realize reducing the degradation by using uniform color space. But this method didn't consider resistance to the JPEG compression. In this paper, we proposed a method which resist to the JPEG compression by embedding watermark into DCT coefficients and reduce the degradation by using uniform color space.

  • ポスター発表のためのアノテーション共有システム (パターン認識・メディア理解)

    田中 克磨, クンツェ カイ, 岩田 基, 岩村 雅一, 黄瀬 浩一

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報  2014.02  一般社団法人電子情報通信学会

     More details

    学会におけるポスター発表は,研究者が自身の研究に対する意見やアイデアを得るための重要な場である.しかし,ポスター発表の性質上,そこで起こる議論は参加者と発表者との間での一対一のやり取りであることが多く,交わされた意見やアイデアが他の参加者と共有されないという問題がある.この問題を解決するため,本稿ではポスター発表のためのアノテーション共有システムを提案する.このシステムはLocally Likely Arrangement Hashingと呼ばれる文書画像検索法に基づいており,ユーザはポスターにスマートフォンをかざすことで,ポスターにアノテーションをつけたり,ポスターにつけられたアノテーションを拡張現実を用いて表示したりすることができる.本システムによって,ポスターを通した参加者同士の交流が可能となる.また,紙面による発表という形式を維持したまま,Webアプリケーションなどによる便利なサービスを提供することができる.

  • 再撮影動画から透かし入り動画の領域を推定する電子透かし法

    穐西 俊弥, 岩田 基, 黄瀬 浩一

    2014年暗号と情報セキュリティシンポジウム概要集  2014.01 

     More details

    <br />
    動画に対して電子透かしを用い,人に知覚されないように付加情報を埋め込み,それをカメラで再撮影することで情報を取り出す手法について検討する.透かし入り動画にスマートフォンをかざすことで関連情報にアクセスできるようにすることが目的である.透かし入り動画を再撮影した動画には,透かし抽出の対象である透かし入り動画の領域以外に背景領域も含まれる.そこで,電子透かし法を,再撮影動画内の透かし入り動画の領域を推定する処理と透かしの埋め込み・抽出を行う処理に分けて考える.まず,透かしの埋め込み・抽出にはフレーム間の差分を利用する手法を用いる.提案手法は携帯端末上でのリアルタイム処理を目指しているため,小さい計算コストが望まれる.そこで,周波数変換などと比べ計算コストが小さい単純な和算,減算のみを用いて計算できるフレーム間差分を利用する方法を用いた.次に,透かし入り動画の領域推定には,透かしとは別に位置ずれ同期用の情報を埋め込むことも考えられるが,画質劣化の原因になるため好ましくない.そこで本稿では,透かし自体の痕跡を利用して透かしを抽出する方法を新たに提案する.実験では,スマートフォンにより撮影した,手ぶれを含む再撮影動画から透かしを抽出し,提案手法の性能を評価する.

  • 画像検索とのハイブリッド方式による文書画像検索の性能向上 (パターン認識・メディア理解)

    杉本 恭隆, 岩田 基, 黄瀬 浩一

    電子情報通信学会技術研究報告 : 信学技報  2013.03  一般社団法人電子情報通信学会

     More details

    文書画像検索の手法の1つとして,LLAHというものがある.LLAHを用いると,文書を撮影した画像から写っている文書を高速で検索できる.しかし,LLAHでは撮影した画像に図や表などが多く含まれる場合,検索が失敗するといった問題がある.主な原因は,LLAHは質問画像が文章であるといった前提があるからである.検索時に利用する特徴点は単語の重心を用いているため,文書でない図や表の部分からは特徴点が出ない.この問題を解決する方法として,画像検索をすることが挙げられる.画像検索を用いることによって,文書だけでなく図や表を人力として検索できる.しかし,LLAHと比べ処理時間がかかるといった問題もある.本稿では,検索対象に対して効率の良い検索方法を適用することで,高精度かつ高速な検索を可能にする手法を提案する.そしてLLAHと画像検索のそれぞれを比較し,性能の向上を示す.

  • The First Competition of Image and Video by IHC

    GOHSHI Seiichi, KURIBAYASHI Minoru, TAKESHITA Hirohisa, ECHIZEN Isao, IWATA Motor, IWAMURA Keiichi

    電子情報通信学会技術研究報告 : 信学技報  2013.01  The Institute of Electronics, Information and Communication Engineers

     More details

    Information Hiding and its Criteria for evaluation (IHC) works for encouraging and for practical use of watermark technologies. In an effort to increase the activity in this particular research field IHC set up the evaluation standard for watermark technologies for image and video version 1. According to the standard IHC conducted its first competition. There were eight applicants and seven of them cleared the standard and received the certification. The award for the best image quality and the award for the highest tolerance were also granted from IHC In this paper the results of the competition, mainly about the best quality and the highest tolerance, are reported. IHC is discussing the standard version 2 that will require higher level requirements for watermark technologies. IHC also has plans to conduct the competitions every year until its purpose is achieved.

  • 印刷物を対象とした電子透かし法の検討

    山中 賢次, 岩田 基, 黄瀬 浩一

    2013年暗号と情報セキュリティシンポジウム概要集  2013.01 

     More details

    <br />
    電子透かしを用いて,印刷物に人間には認識できないように情報を埋め込み、それをスマートフォンで撮影して情報を取り出す手法について検討する.透かし入りの印刷物にユーザーがスマートフォンをかざすことで情報を得られることを目指している.これを実現するには,スマートフォンをかざしている間,撮影と,情報の抽出処理を並行して行う必要がある.そのため,従来の電子透かしでは重視されていなかった抽出処理の高速性が求められる.ほかの要件としては,撮影映像の解像度が高いと抽出処理に時間がかかるため,解像度が低い撮影映像から情報を抽出できなければならない.また,印刷の際には色合いの変化が生じたり,撮影の際には手ブレや位置ずれなどが生じたりするため,これらの外乱に耐性を持たせなければならない.

  • モニタに映し出された動画像から透かしを抽出できる電子透かし法

    仲辻 友博, 岩田 基, 黄瀬 浩一

    2013年 暗号と情報セキュリティシンポジウム概要集  2013.01 

     More details

    本稿では, スマートフォンを利用したサービスへ電子透かしを応用することを考える. 例え ば, 透かし入り動画像に対してスマートフォンをかざすことによって, 透かしを抽出して情報を得るサー ビスが考えられる. スマートフォンで透かし入り動画像を撮影すると, 撮影した動画像が傾いていたり, 透かし入り動画像以外の部分を含んで録画される. また, 撮影した動画像はフレームレートが異なり, 色 合いが変化していることが想定される. 本研究では撮影した動画像から透かし入り動画像の部分を検出 し, 補正したものから透かしを抽出することを考える. また, 動画像の途中から撮影した場合でも情報を 得られることが必要である. 動画像の途中からでも透かしを取り出せる手法として, 2007 年に山本らが時 間同期外しに耐性をもつ電子透かし法を提案している. 山本らは動画像をブロック分割して3 次元DFT を施し, 一つの周波数平面のみを用いて全てのブロックに同じ3 ビットの情報を埋め込んでいた. 提案手 法では, 複数の周波数平面を用い, 全てのブロックに個別の情報を埋め込んでも情報を抽出できるように 変更する. 山本らは一つのフレームセットから全てのビットを抽出していたが, ブロックごとに埋め込む ビット0, 1 に対応する系列との相関値の差の大きさが最大になる所を動画像全体を用いて探索するよう に抽出法を改良した. この抽出法を用い, 実際にスマートフォンで撮影した透かし入り動画像を補正した 動画像に対して抽出実験を行い, その有用性を示す.

  • A-7-2 Evaluation of Attack Tolerance for Audio Watermarking Method Based on Musical Instrumental Identification

    Murata Harumi, Ogihara Akio, Iwata Motoi, Shiozaki Akira

    Proceedings of the IEICE General Conference  2012.03  The Institute of Electronics, Information and Communication Engineers

  • Detection of Abnormal Situations Based on Comprehensive Behavioral Patterns

    KUZUMOTO Eri, GIBO Tatsuya, AOKI Shigeki, MIYAMOTO Takao, IWATA Motoi, SHIOZAKI Akira

    Technical report of IEICE. PRMU  2012.02  The Institute of Electronics, Information and Communication Engineers

     More details

    Recently, automatic surveillance systems have become active area of research. There are two typical methods of research for automatic surveillance systems. They are the methods of giving model data of abnormal patterns and the methods of detecting rare patterns. The former methods can detect the patterns of given model data, but cannot define all abnormal patterns. The latter methods are not able to detect all abnormal patterns. In this paper, we propose a novel method of having the advantage of these methods. First, we extract behavioral patterns from images of a surveillance camera. Second, we classify the behavioral patterns and "normal" or "abnormal" information is given to each class. Finally, we recognize observed behavioral patterns based on the information.

  • Learning and Recognition of Behavioral Patterns Based on Positions of Multiple People

    OBAYASHI Wataru, GIBO Tatsuya, AOKI Shigeki, MIYAMOTO Takao, IWATA Motoi, SHIOZAKI Akira

    2011.05 

  • User Authentication Using Eigenspace Method Based on Keystroke Characteristics

    YAMAGUCHI Yuhei, MIYAMOTO Takao, AOKI Shigeki, IWATA Motoi, SHIOZAKI Akira

    2011.05 

  • User Authentication Using Neural Network Based on Keystroke Characteristics

    SAKURAI Keishi, MIYAMOTO Takao, AOKI Shigeki, IWATA Motoi, SHIOZAKI Akira

    IEICE technical report  2011.02  The Institute of Electronics, Information and Communication Engineers

     More details

    Recently, several user authentication methods using keystroke characteristics for free-style text have been presented. In this paper, we propose a new user authentication method using the measures based on keystroke characteristics. Firstly, we set the parameters of each measure for each user by using templates of the user and others collected in advance. Secondly, we set the weight coefficients of a neural network for each user using the templates. Finally, we calculate the similarities between the user and his/her template, and authenticate the user by inputting the similarities to the neural network. We have performed experiments by this method and have achieved 0.17% of false acceptance rate and 2.38% of false rejection rate.

  • An Audio Watermarking Method for Multiple Instrumental Music Based on Musical Instrument Identification

    MURATA Harumi, OGIHARA Akio, IWATA Motoi, SHIOZAKI Akira

    Technical report of IEICE. EA  2011.02  The Institute of Electronics, Information and Communication Engineers

     More details

    The objective of this work is to devise a new way to embed a watermark into digital audio signal. In the conventional methods, it needs to embed the watermark without noise perception caused by embedding. However, it is difficult to embed the watermark without noise perception. Hence, we propose an embedding method so as to permit a perception of an embedded watermark signal. The high sound quality is required for a watermark signal even if noises are perceived. Therefore, we estimate the instrument for each note and embed a watermark by using the corresponding sampled sound for each note. Moreover, we improve the sound quality of watermarked audio signal in consideration of music theory of chords.

  • A-7-1 Improvement of Sound Quality for Audio Watermarking Based on Multiplicative Patchwork Method

    Yamamoto Masaru, Ogihara Akio, Murata Harumi, Iwata Motoi, Shiozaki Akira

    Proceedings of the Society Conference of IEICE  2010.08  The Institute of Electronics, Information and Communication Engineers

  • A-7-5 Digital Watermarking for Printed Images Based on Fractal Coding

    Yamamoto Kazuya, Iwata Motoi, Ogihara Akio, Shiozaki Akira

    Proceedings of the Society Conference of IEICE  2010.08  The Institute of Electronics, Information and Communication Engineers

  • A-7-4 Varification of the Suitable Color Transform Method in a Digital Watermarking Method

    Ikemoto Takao, Iwata Motoi, Ogihara Akio, Shiozaki Akira

    Proceedings of the Society Conference of IEICE  2010.08  The Institute of Electronics, Information and Communication Engineers

  • A-7-3 Multiple Embedding for Time-Domain Audio Watermarking Based on Variance of Amplitude Modification

    Kishimoto Natsumi, Ogihara Akio, Iwata Motoi, Shiozaki Akira

    Proceedings of the Society Conference of IEICE  2010.08  The Institute of Electronics, Information and Communication Engineers

  • A-7-2 An Audio Watermarking Method by Using Signals with Timbre Like Instruments

    Murata Harumi, Ogihara Akio, Iwata Motoi, Shiozaki Akira

    Proceedings of the Society Conference of IEICE  2010.08  The Institute of Electronics, Information and Communication Engineers

  • An audio watermarking method for single musical instrument in consideration of pitch estimation

    2010.06 

  • An Audio Watermarking Method for Single Musical Instrument in Consideration of Pitch Estimation

    MURATA Harumi, OGIHARA Akio, IWATA Motoi, SHIOZAKI Akira

    IEICE technical report  2010.06  The Institute of Electronics, Information and Communication Engineers

     More details

    In this paper, we aim to embed watermark information without perception of deterioration of sound quality based on watermarking method in consideration of human auditory property. Therefore, we use pitch estimation which is used in automatic music transcription. Automatic music transcription is a technique to convert music played with musical instruments to the score automatically. We embed watermark information in consonances of original audio signal. Generally, consonances are unison, octave, perfect fifth and perfect fourth. In this paper, we embed watermark information in perfect fifth or perfect fourth. Moreover, we use spectrogram analysis for pitch estimation. We aim to reduce deterioration of sound quality of watermarked audio signal by embedding watermark information in consonances of estimated pitch in spectrogram analysis.

  • Automatic Extraction of Regions of Interest from Images of Surveillance Cameras

    KUZUMOTO Eri, AOKI Shigeki, MIYAMOTO Takao, IWATA Motoi, SHIOZAKI Akira

    2010.05 

  • Sequential Learning and Recognizing Comprehensive Behavioral Patterns Based on Movement Direction of Multiple People

    GIBO Tatsuya, AOKI Shigeki, MIYAMOTO Takao, IWATA Motoi, SHIOZAKI Akira

    2010.05 

  • User Authentication Based on Keystroke Characteristics of Japanese Free Text

    SAKURAI Keishi, MIYAMOTO Takao, AOKI Shigeki, IWATA Motoi, SHIOZAKI Akira

    2010.05 

  • D-19-3 Digital Watermark for Audio Signals Using Automatic Transcription Result

    Hayashi Shigetoshi, Ogihara Akio, Iwata Motoi, Shiozaki Akira

    Proceedings of the IEICE General Conference  2010.03  The Institute of Electronics, Information and Communication Engineers

  • Audio Watermarking Method by Using DC Component for Sound Quality Improvement

    MURATA Harumi, OGIHARA Akio, IWATA Motoi, SHIOZAKI Akira

    IEICE technical report  2009.12  The Institute of Electronics, Information and Communication Engineers

     More details

    The audio watermarking method, "the audio watermarking method based on amplitude modification," has been proposed by W. N. Lie as a prevention technique against copyright infringement. We have increased the capacity of watermark information by embedding multiple watermarks. However, the multiple embedding causes the deterioration of sound quality. And hence, we propose the sound quality improvement method focused on the DC component which is not perceived by human ears. From experimental results, we confirmed that the subjective sound quality was improved as the robustness was maintained.

  • A-7-4 Subjective Sound Quality Improvement in Multichannel Audio Watermarking

    Murata Harumi, Ogihara Akio, Iwata Motoi, Shiozaki Akira

    Proceedings of the Society Conference of IEICE  2009.09  The Institute of Electronics, Information and Communication Engineers

  • A-7-16 Multiple Audio Watermarking and Sound Quality Improvement in Consideration of WSS Distance

    Murata Harumi, Ogihara Akio, Iwata Motoi, Shiozaki Akira

    Proceedings of the IEICE General Conference  2009.03  The Institute of Electronics, Information and Communication Engineers

  • Traffic Data Visualization of a Campus-wide Network

    MATSUMOTO Shun, MIYAMOTO Takao, AOKI Shigeki, IWATA Motoi, SHIOZAKI Akira

    IEICE technical report  2009.03  The Institute of Electronics, Information and Communication Engineers

     More details

    Due to increasing number of attacks over the network, it becomes essential for network administrators to properly to keep the network secure. The administrators have to monitor and analyze traffics through the network to comprehend the condition of the network. To alleviate load of the administrators, a study of efficiently visualizing traffics is being done. In this paper, we propose a method to visualize relation of the nodes and change of traffic states by observing transition of nodes distribution which is made after sorting out the nodes according to destinations and number of packets. This method enables the administrators to comprehend the network condition by visualizing whole image of traffics and change of traffic states in the nodes.

  • Visualization of Network Traffic Using Self-Organizing Maps

    MATSUMOTO Shun, IWATA Motoi, SHIOZAKI Akira, AOKI Shigeki, MIYAMOTO Takao

    2008.09 

  • Detection of Irregular Situation by Comprehensively Recognizing Human Behavioral Patterns of Multiple People

    AOKI Shigeki, MIYAMOTO Takao, TAKEDA Shinnosuke, IWATA Motoi, SHIOZAKI Akira

    2008.09 

  • A-7-8 Multiple Audio Watermarking and Reduction of Click Noise

    Murata Harumi, Ogihara Akio, Iwata Motoi, Shiozaki Akira

    Proceedings of the Society Conference of IEICE  2008.09  The Institute of Electronics, Information and Communication Engineers

  • I-075 Digital Watermarking Method Restoring Manipulated JPEG Images

    Hori Tomoki, Shiozaki Akira, Iwata Motoi, Ogihara Akio

    2008.08  Forum on Information Technology

  • L-009 Data structure of electronic document that can detect falsified parts

    Nakamura Yusuke, Shiozaki Akira, Iwata Motoi, Ogihara Akio

    2008.08  Forum on Information Technology

  • I-077 Digital watermarking method robust against geometrical distortion and collusion attack

    Tanaka Kanako, Shiozaki Akira, Iwata Motoi, Ogihara Akio

    2008.08  Forum on Information Technology

  • I-076 Control of Watermark Strength Based on Human Visual System Using Gabor Filter

    Kanaya Tomoo, Iwata Motoi, Ogihara Akio, Shiozaki Akira

    2008.08  Forum on Information Technology

  • A-7-7 Multiple Embedding for Time-Domain Audio Watermarking Based on Low-Frequency Amplitude Modification

    Murata Harumi, Ogihara Akio, Iwata Motoi, Shiozaki Akira

    Proceedings of the IEICE General Conference  2008.03  The Institute of Electronics, Information and Communication Engineers

  • A-7-19 An Improvement Method of Detecting Synchronization Codes on Audio Watermarking

    Inoue Naoya, Ogihara Akio, Iwata Motoi, Shiozaki Akira

    Proceedings of the IEICE General Conference  2007.03  The Institute of Electronics, Information and Communication Engineers

  • J_054 Semi-Fragile Digital Watermarking Method for Detection and Restoration of Manipulation

    Yasuda Takuya, Shiozaki Akira, Iwata Motoi, Ogihara Akio

    2006.08  Forum on Information Technology

  • M_036 A Study on Long-Term Verification of Digital Images Based on Hysteresis Signature

    Tatsumi Takuya, Iwata Motoi, Shiozaki Akira

    2006.08  Forum on Information Technology

  • J-019 A Tamper Detection Method for Movie with Sound Data

    Ogihara Akio, Tanaka Keisuke, Iwata Motoi, Shiozaki Akira

    2005.08  Forum on Information Technology

  • A-7-1 A Correlation-Based Watermark for Movie with Sound Data

    Tanaka Keisuke, Ogihara Akio, Iwata Motoi, Shiozaki Akira

    Proceedings of the IEICE General Conference  2005.03  The Institute of Electronics, Information and Communication Engineers

  • 1-12 Digital watermarking method for images obtained by camera-equipped cellular phone

    Sun Tianhua, Iwata Motoi, Ogihara Akio, Shiozaki Akira

    PROCEEDINGS OF THE ITE WINTER ANNUAL CONVENTION  2005  The Institute of Image Information and Television Engineers

     More details

    We propose a new digital watermarking method robust against printing and snapping. The method can extract watermarks from images obtained by camera-equipped cellular phone. In the method, watermarks are embedded using the inner product of DCT coefficients and a random sequence.

  • A Method of Embedding Index Data into JPEG Images

    MIYAKE Kyosuke, IWATA Motoi, SHIOZAKI Akira

    2001.12 

  • Digital Watermarking Method Using Orthogonality between Hadamard Basis and Wavelet Transform Coefficients of Luminance Images

    IWATA Motoi, SHIOZAKI Akira

    2001.12 

  • Index Data Embedding Watermarking Method Depending on the Numbere of Characters

    TSUKAGUCHI Makoto, IWATA Motoi, SHIOZAKI Akira

    Proceedings of the IEICE General Conference  2001.03  The Institute of Electronics, Information and Communication Engineers

  • Index Data Embedding Method for Color Images by Digital Watermarking

    TSUKAGUCHI Makoto, IWATA Motoi, TANIMOTO Jiro, SHIOZAKI Akira

    Proceedings of the IEICE General Conference  2000.03  The Institute of Electronics, Information and Communication Engineers

  • A Method of Embedding Robust Watermarks against Geomatic Distortions

    YOKOTA Motokazu, TANIMOTO Jiro, IWATA Motoi, SHIOZAKI Akira

    Proceedings of the IEICE General Conference  2000.03  The Institute of Electronics, Information and Communication Engineers

  • Layout Analysis of Document Images Based on Relaxation

    Iwata Moatoi, Kise Koichi, Matsumoto Keinosuke

    Proceedings of the IEICE General Conference  1999.03  The Institute of Electronics, Information and Communication Engineers

  • Text Line Extraction Based on Area Voronoi Diagram

    Iwata Motoi, Kise Koichi, Matsumoto Keinosuke

    Proceedings of the IEICE General Conference  1998.03  The Institute of Electronics, Information and Communication Engineers

▼display all

Industrial Property Rights

  • 類似画像検索装置、類似画像検索方法および類似画像検索プログラム

    黄瀬 浩一, 岩村 雅一, 岩田 基, 工藤 力, 白井 一視

     More details

    property_type:Patent 

    Application no:特願2019-038608 

    Announcement no:特開2020-144440 

    Patent/Registration no:特許第7329933号 

    J-GLOBAL

  • 類似画像検索装置,類似画像検索方法および類似画像検索プログラム

    黄瀬浩一,岩村雅一,岩田基,工藤力,白井一視

     More details

    property_type:Patent 

    Patent/Registration no:特願2019-38608 

  • 電子透かし埋め込み方法

    岩田基

     More details

    property_type:Patent 

    Patent/Registration no:特願2010-007243,特開2011-147017 

Grant-in-Aid for Scientific Research

  • 人の学習を対象とした知能増強に関する国際共同研究

    Fund for the Promotion of Joint International Research / Fostering Joint International Research (B)  2022

  • 人の知識I/Oを加速するセンシングとアクチュエーション

    Grant-in-Aid for Scientific Research(B)  2022

  • バウム画のゲシュタルトの質の自動判定により「こころの見える化」を促す

    Grant-in-Aid for Scientific Research(C)  2022

Charge of on-campus class subject

  • 初年次ゼミナール

    2022   Weekly class   Undergraduate

  • 情報リテラシー

    2022   Weekly class   Undergraduate

  • 基幹情報学特別研究1

    2022   Intensive lecture   Graduate school

  • 画像情報学

    2022   Weekly class   Graduate school

  • ヒューマンコンピュータインタラクション

    2022   Weekly class   Graduate school

  • システムプログラム

    2022   Weekly class   Undergraduate

  • 情報工学基礎演習2

    2022   Weekly class   Undergraduate

  • 電気・情報系特別研究第二

    2022   Intensive lecture   Graduate school

  • Advanced Image Processing

    2021    

  • First Year Seminar

    2021    

  • Advanced Intelligent Information Systems I

    2021    

  • System Programs

    2021    

  • Advanced Information Security

    2021    

  • System Programs

    2021    

  • Advanced Information Security

    2021    

  • Advanced Image Processing

    2021    

  • Advanced Intelligent Information Systems I

    2021    

  • First Year Seminar

    2021    

▼display all

Faculty development activities

  • 大阪公立大学:第1回FD研究会「大阪公立大学におけるFDのあり方について考える(1)」  2022

  • 工学FDセミナー『教育改善のための、ポートフォリオシステム「てぃら・みす」活用法』  2022

  • 【全学FD/SD研修(全教職員対象)】アクセシビリティセンター研修  2022

  • 全学FDセミナー 「THEランキングを通して授業カリキュラム、授業実践を振り返る」  2021

     More details

    セミナーへの参加

Number of papers published by graduate students

  • 2022

    Number of graduate students presentations:5

  • 2021

    Number of graduate students presentations:3

  • 2020

    Number of graduate students presentations:2

  • 2019

    Number of graduate students presentations:2

Number of instructed thesis, researches

  • 2022

    Number of instructed the graduation thesis:

    [Number of instructed the Master's Program] (previous term):

    [Number of master's thesis reviews] (vice-chief):2

Social Activities

  • 学習者の内的状態に応じた英語学習支援

    Role(s): Lecturer

    大阪公立大学  大阪公立大学 第135回テクノラボツアー「知能情報工学分野の若手研究」  2023.01

     More details

    SDGs:

    Type:Seminar, workshop

Academic Activities

  • Special Section on Enriched Multimedia–Advanced Safety, Security and Convenience–

    Role(s): Planning, management, etc.

    The Institute of Electronics, Information and Communication Engineers  2021.08 - 2023.01

     More details

    Type:Academic society, research group, etc. 

    Guest Editor

Foreigner acceptance

  • 2023

    International Students :1

  • 2022

    International Students :1

  • 2021

    International Students :1

  • 2020

    International Students :1