Hiroshi Ishikawa	To Lab page  Japanese
	Professor Department of Computer Science and Engineering School of Fundamental Science and Engineering Waseda University (Bio)	Contact: Mailing address: Waseda University Department of Computer Science and Engineering Okubo 3-4-1, Shinjuku, Tokyo 169-8555, Japan

For prospective students: Don't send me emails. You can always apply. New: Gaussian Splatting with Reflections Guided by What is Seen. Yiming Liang, Tianyu Xiao, and Hiroshi Ishikawa. To appear in the IEEE International Conference on Image Processing (ICIP), 2026. TAUSS: Temporally Aligned Unsupervised 3D Lidar Semantic Segmentation in Driving Scenes. So Minesawa and Hiroshi Ishikawa. To appear in the IEEE International Conference on Image Processing (ICIP), 2026. Software: Higher-Order Clique Reduction softwares. Code and demo site for Automatic Colorization. Demo site for Neural Network-based Sketch Simplification. Talks, etc.: Asian Conference on Computer Vision 2020 was successfully held on November 30 through Decemter 4, 2020. Computer Graphics International 2019 was successfully held from June 17th through June 20th 2019 in Calgary, Canada. MVA2017 was successfully held at Nagoya University, Nagoya, Japan from May 8th through 12th, 2017. Automatic Image Colorization and Rough Sketch Cleanup by Deep Learning (talk), ACCV2016 Area Chairs Workshop, Aug. 15, 2016, Keelung Evergreen Laurel Hotel, Taiwan. Slides "MAP Estimation of Markov Random Fields with Some Applications in Medical Imaging" (invited talk), Mar. 23, 2016 in the Probabilistic Graphical Model Workshop: Sparsity, Structure and High-dimensionality. The Institute of Statistical Mathematics (ISM), Tokyo, Japan. Slides "Higher-Order Graph Cuts and Medical Image Segmentation" (invited talk) Mathematical and Computational Methods in Biomedical Imaging and Image Analysis (MCBMIIA2015), Nov. 24, 2015. University of Auckland, New Zealand. MVA2015 has been successfully concluded. It had 257 participants from 32 countries. I will also be the general chair of the next one: MVA2017, which will be held in Nagoya. Higher-order Graph Cuts. Hiroshi Ishikawa, ACCV2014 Area Chairs Workshop, Sep. 3, 2014, Nanyang Technological University, Singapore. Slides Proposal Selection in Higher-order Graph Cuts. Hiroshi Ishikawa, Slides In the 25th European Conference on Operational Research (EURO2012), Jul. 8-11, 2012, Vilnius, Lithuania. Higher-Order Graph Cut talks in Taiwan, Sep. 16-22, 2011. At Academia Sinica, National Taiwan University, National Taiwan University of Science and Technology, and National Tsing Hua University. Slides Our stereo illusion was chosen as one of the TOP 10 finalists in the 2009 Best Visual Illusion of the Year Contest. Tutorial: A Practical Introduction to Graph Cut. The 3rd Pacific-Rim Symposium on Image and Video Technology (PSIVT2009). National Institute of Informatics, Tokyo, Japan, January 13th-16th, 2009. (Tutorial slides) IPAM Short Program "Graph Cuts and Related Discrete or Continuous Optimization Problems". February 25 - 29, 2008. At IPAM, the Institute for Pure & Applied Mathematics, UCLA. Schedule and presentation files (my presentation) Selected Publication: Random Frame: a Data Augmentation for Glass Detection. Yiming Liang and Hiroshi Ishikawa. 27th International Conference on Pattern Recognition (ICPR), 2024. Dataset-Level Directed Image Translation for Cross-Domain Crowd Counting. Xin Tan and Hiroshi Ishikawa. 2023 IEEE International Conference on Image Processing (ICIP), 2023. Learning Photo Enhancement by Black-Box Model Optimization Data Generation. Mayu Omiya, Edgar Simo-Serra, Satoshi Iizuka, and Hiroshi Ishikawa. PDF SIGGRAPH Asia Technical Brief, 7:1-7:4, 2018. Real-Time Data-Driven Interactive Rough Sketch Inking. Edgar Simo-Serra, Satoshi Iizuka, and Hiroshi Ishikawa. PDF Project page ACM Transactions on Graphics, Volume 37, Issue 4 (Proc. of SIGGRAPH2018), Article 98, August 2018. Learning to Restore Deteriorated Line Drawing. Kazuma Sasaki, Satoshi Iizuka, Edgar Simo-Serra, and Hiroshi Ishikawa. PDF Project page The Visual Computer (Proc. of Computer Graphics International 2018). Mastering Sketching: Adversarial Augmentation for Structured Prediction. Edgar Simo-Serra, Satoshi Iizuka, and Hiroshi Ishikawa. PDF Project page ACM Transactions on Graphics, Volume 37, Issue 1, Article 11, January 2018. Globally and Locally Consistent Image Completion. Satoshi Iizuka, Edgar Simo-Serra, and Hiroshi Ishikawa. PDF Project page ACM Transactions on Graphics, Volume 36, Issue 4 (Proc. of SIGGRAPH2017), Article 107, July 2017. Joint Gap Detection and Inpainting of Line Drawings. Kazuma Sasaki, Satoshi Iizuka, Edgar Simo-Serra, and Hiroshi Ishikawa. PDF Project page 30th IEEE Conference on Computer Vision and Pattern Recognition (CVPR2017), Honolulu, Hawaii. July 22-25, pp 5768-5776, 2017. Room Reconstruction from a Single Spherical Image by Higher-Order Energy Minimization. Kosuke Fukano, Yoshihiko Mochizuki, Edgar Simo-Serra, Satoshi Iizuka, Akihiro Sugimoto, and Hiroshi Ishikawa. PDF 23rd International Conference on Pattern Recognition (ICPR2016), Cancun, Mexico. December 4-8, 2016. Detection by Classification of Buildings in Multispectral Satellite Imagery. Tomohiro Ishii, Edgar Simo-Serra, Satoshi Iizuka, Yoshihiko Mochizuki, Akihiro Sugimoto, Hiroshi Ishikawa, and Ryosuke Nakamura. PDF 23rd International Conference on Pattern Recognition (ICPR2016), Cancun, Mexico. December 4-8, 2016. Let there be Color!: Joint End-to-end Learning of Global and Local Image Priors for Automatic Image Colorization with Simultaneous Classification. Satoshi Iizuka, Edgar Simo-Serra, and Hiroshi Ishikawa. PDF Project page ACM Transactions on Graphics, Volume 35, Issue 4 (Proc. of SIGGRAPH2016), Article 110, July 2016. Winner, the Innovative Technologies 2016 Special Award for Culture by the Ministry of Economy, Trade and Industry. Learning to Simplify: Fully Convolutional Networks for Rough Sketch Cleanup. Edgar Simo-Serra, Satoshi Iizuka, Kazuma Sasaki, and Hiroshi Ishikawa. PDF Project page ACM Transactions on Graphics, Volume 35, Issue 4 (Proc. of SIGGRAPH2016), Article 121, July 2016. Fashion Style in 128 Floats: Joint Ranking and Classification using Weak Data for Feature Extraction. Edgar Simo-Serra and Hiroshi Ishikawa. PDF Project page 29th IEEE Conference on Computer Vision and Pattern Recognition (CVPR2016), Las Vegas, Nevada. June 26-July 1, pp 298-307, 2016. Data-Dependent Higher-Order Clique Selection for Artery-Vein Segmentation by Energy Minimization. Yoshiro Kitamura, Yuanzhong Li, Wataru Ito, and Hiroshi Ishikawa. PDF International Journal of Computer Vision, Volume 117, Issue 2, pp 142-158, April 2016. Psoas Major Muscle Segmentation Using Higher-Order Shape Prior. Tsutomu Inoue, Yoshiro Kitamura, Yuanzhong Li, Wataru Ito, and Hiroshi Ishikawa. MICCAI Workshop on Medical Computer Vision: Algorithms for Big Data (MICCAI-MCV 2015), LNCS9601, pp. 116-124, 2015. A HOG-Based Hand Gesture Recognition System on a Mobile Device. Lukas Prasuhn, Yuji Oyamada, Yoshihiko Mochizuki, and Hiroshi Ishikawa. IEEE International Conference on Image Processing (ICIP2014), Paris, France, Oct 27-30, 2014. Coronary Lumen and Plaque Segmentation from CTA Using Higher-Order Shape Prior. Yoshiro Kitamura, Yuanzhong Li, Wataru Ito, and Hiroshi Ishikawa. The 17th International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI2014), Boston, Massachusetts, Sep 14-18, 2014. The algorithm described in the paper, a coronary artery stenoses detection and lumen segmentation algorithm using higher-order graph cuts, is now listed at the top in the Rotterdam Coronary Artery Stenoses Detection and Quantification Evaluation Framework website (as of July 4, 2015)(screen shot on July 11, 2016)). Higher-Order Clique Reduction Without Auxiliary Variables. Hiroshi Ishikawa. PDF software IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR2014), Columbus, Ohio. June 23-28, 2014. pp. 1362-1369. Adaptive higher-order submodular potentials for pulmonary artery-vein segmentation. Yoshiro Kitamura, Yuanzhong Li, Wataru Ito, and Hiroshi Ishikawa. PDF In the Fifth International Workshop on Pulmonary Image Analysis, MICCAI2013, September 26, 2013, Nagoya, Japan. Generalized Roof Duality for Multi-Label Optimization: Optimal Lower Bounds and Persistency. T. Windheuser, H. Ishikawa, and D. Cremers. PDF In the Twelfth European Conference on Computer Vision (ECCV2012), October 7-13, 2012, Firenze, Italy. Lecture Notes in Computer Science 7577, pp. 400-413, Springer-Verlag. Graph Cuts—Combinatorial Optimization in Vision (Chapter 2). Hiroshi Ishikawa. In Image Processing and Analysis with Graphs: Theory and Practice, Edited by Olivier Lézoray and Leo Grady, CRC Press, July 2012. ISBN: 978-1-439-855072. Optimizing Multi-Label MRFs with Convex and Truncated Convex Priors (Chapter 4), Hiroshi Ishikawa and Olga Veksler. In Markov Random Fields for Vision and Image Processing, Edited by Andrew Blake, Pushmeet Kohli, and Carsten Rother, MIT Press, September 2011. ISBN: 978-0-262-01577-6. Transformation of General Binary MRF Minimization to the First Order Case. Hiroshi Ishikawa. PDF Cited by... IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 33, no. 6, pp. 1234-1249, June 2011. (Published online in March 2010). Copyright 2011 IEEE. Higher-Order Gradient Descent by Fusion-Move Graph Cut. Hiroshi Ishikawa. PDF. Cited by... Twelfth IEEE International Conference on Computer Vision (ICCV2009), Kyoto, Japan. September 29-October 2, 2009. pp. 568-574. Copyright 2009 IEEE. Higher-Order Clique Reduction in Binary Graph Cut. Hiroshi Ishikawa. PDF. Powerpoint Presentation. Software. Cited by.... IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR2009), Miami Beach, Florida. June 20-25, 2009. pp. 2993-3000. Copyright 2009 IEEE. Representation and Measure of Structural Information. Hiroshi Ishikawa. (preprint) PDF (letter) PDF (A4) arXiv:0711.4508. Revised June 12, 2008. Slides for the talk given at INRIA. Total Absolute Gaussian Curvature for Stereo Prior. Hiroshi Ishikawa. Cited by... Eighth Asian Conference on Computer Vision (ACCV 2007), November 18-22, 2007, Tokyo, Japan. Lecture Notes in Computer Science 4844, pp. 537-548, Springer-Verlag. Rethinking the Prior Model for Stereo. Hiroshi Ishikawa and Davi Geiger. Cited by... Ninth European Conference on Computer Vision (ECCV 2006), May 7-13, 2006, Graz, Austria. Lecture Notes in Computer Science 3953, pp. 526-537, Springer-Verlag. Illusory Volumes in Human Stereo Perception. Hiroshi Ishikawa and Davi Geiger. PDF Cited by... Vision Research, Vol. 46, Issues 1-2, pp. 171-178, January 2006. Finding Tree Structures by Grouping Symmetries. Hiroshi Ishikawa, Davi Geiger, and Richard Cole. PDF Cited by... Tenth IEEE International Conference on Computer Vision (ICCV 2005), October 15-21, 2005, Beijing, China. pp. 1132-1139. Copyright 2005 IEEE. Higher-dimensional Segmentation by Minimum-cut Algorithm. Hiroshi Ishikawa and Davi Geiger. PDF Ninth IAPR Conference on Machine Vision Applications (MVA 2005), May 16-18, 2005, Tsukuba, Japan. Exact Optimization for Markov Random Fields with Convex Priors. Hiroshi Ishikawa. Winner, IEEE Computer Society Japan Chapter Young Author Award. PDF Cited by... IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 25, No. 10, pp. 1333-1336. October 2003. Copyright 2003 IEEE. Globally Optimal Regions and Boundaries as Minimum Ratio Cycles. Ian H. Jermyn and Hiroshi Ishikawa. PDF Cited by... IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 23, No. 10, pp. 1075-1088. October 2001. Copyright 2001 IEEE. Region Extraction from Multiple Images. Hiroshi Ishikawa and Ian H. Jermyn. PDF Cited by... Eighth IEEE International Conference on Computer Vision (ICCV'01), July 9-12, 2001, Vancouver, Canada. Copyright 2001 IEEE. Global Optimization Using Embedded Graphs. Hiroshi Ishikawa. PDF Cited by... Ph.D. Dissertation. May 2000, New York University. Globally Optimal Regions and Boundaries. Ian H. Jermyn and Hiroshi Ishikawa. PDF Cited by... Seventh IEEE International Conference on Computer Vision (ICCV'99), September 20-27, 1999, Kerkyra, Greece. Copyright 1999 IEEE. Multi-scale Feature Selection in Stereo. Hiroshi Ishikawa. PDF Cited by... IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'99), June 1999, Fort Collins, Colorado. Copyright 1999 IEEE. Mapping Image Restoration to a Graph Problem. Hiroshi Ishikawa and Davi Geiger. PDF Cited by... IEEE-EURASIP Workshop on Nonlinear Signal and Image Processing (NSIP'99) 20-23 June 1999, Antalya, Turkey. Copyright 1999 IEEE. Segmentation by Grouping Junctions. Hiroshi Ishikawa and Davi Geiger. PDF Cited by... IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'98), June 1998, Santa Barbara, CA. Copyright 1998 IEEE. Occlusions, Discontinuities, and Epipolar Lines in Stereo. Hiroshi Ishikawa and Davi Geiger. PDF Cited by... Fifth European Conference on Computer Vision (ECCV '98), June 2-6, 1998, Freiburg, Germany. Lecture Notes in Computer Science 1406, pp. 232-248, Springer-Verlag.