- Computer Graphics Lab.
- Professor, Research Center for Advanced Information Science and Technology Director of the Center
- Web site
- Courses - Undergraduate
- Introduction to Multimedia Systems, Compuer Graphics, Information Theory, Geometry for Visual Computing
- Courses - Graduate
- 3D Computer Graphics and GPU Programming
- Computer Visualization and Graphics
- Educational Background, Biography
- 1992: Bachelor in Science (U Tokyo) 1994: M.S. in Computer Science (U Tokyo) 1997: Ph.D. in Computer Science (U Tokyo)
- Current Research Theme
- scientific visualization, information visualization, visual perception modeling, mathematical visualization, geospatial visualization, visual analytics, nonphotorealistic rendering
- Key Topic
- topological data visualization, map schematization, image abstraction, high-dimensional data visualization
- Affiliated Academic Society
- IEEE, ACM, EurographicsJSPS, IEICE, VSJ, JCA
- Listening to music, watching sports, watching shogi games, traveling
- School days' Dream
- Train/bus driver
- Current Dream
- Visualize the complexity in our mind
- Your effort will pay off.
- Favorite Books
- Messages for Students
- Be serious about your study and research
- Publications other than one's areas of specialization
- Shape modeling
The typical domains of application of shape modeling include: computer-aided design, architecture, design and rapid prototyping, mechanical engineering or medical image processing.
The usual methods or operations that can be performed include: acquisition from scanned data, conversion between representation, creation and modeling, deformation, repairing, optimization, animation, etc
The shapes studied are in general two or three dimensional, though it is possible to consider additional dimensions corresponding, for example, to the time (for time-dependent shapes) or internal attributes of the objects.
Shape modeling is dealing with the study of mathematical tools, data-structures and algorithms for the description of the shape of objects and the operations to be applied to them.
- Asteroid Explorer Hayabusa2
Many members from the University of Aizu, in particular faculty members from CAIST/ARC-Space, have been involved with Hayabusa 2, the asteroid explorer launched by JAXA in 2014. Our University's members have been conducting research in connection with this project in anticipation of Hayabusa 2's arrival at the asteroid 162173 Ryugu in 2018, to be followed by its return to Earth in 2020. Specifically teams at the University have been engaged in developing observation instruments, which include the near infrared spectrometer installed on Hayabusa 2, and in developing analytic software that will model the shape of the asteroid based on data captured by the probe's observation instruments.
JAXA Hayabusa 2 project website
*Material from JAXA's digital archives has been used for the banner images, etc.
- Research on Computer Visualization
This research aims at formulating methods and algorithms for transforming data into visual information, in order to help users to understand the underlying features behind it.
Dissertation and Published Works
 Eunjung Ju, Myung Geol Choi, Minji Park, Jehee Lee, Kang Hoon Lee, and Shigeo Takahashi. Morphable Crowds. ACM Transactions on Graphics, Vol. 29, No. 5, 2010. Article No. 140, DOI: 10.1145/1866158.1866162
 Shigeo Takahashi, Issei Fujishiro, and Masato Okada. Applying Manifold Learning to Plotting Approximate Contour Trees. IEEE Transactions on Visualization and Computer Graphics, Vol. 15, No. 6, pp. 1185-1192, 2009. DOI: 10.1109/TVCG.2009.119
 Shigeo Takahashi, Kenichi Yoshida, Taesoo Kwon, Kang Hoon Lee, Jehee Lee, and Sung Yong Shin. Spectral-Based Group Formation Control. Computer Graphics Forum, Vol. 28, No. 2, pp. 639-648, 2009. DOI: 10.1111/j.1467-8659.2009.01404.x
 Taesoo Kwon, Kang Hoon Lee, Jehee Lee, and Shigeo Takahashi. Group Motion Editing. ACM Transactions on Graphics, Vol. 27, No. 3, 2008. Article No. 80, DOI: 10.1145/1360612.1360679
 Shigeo Takahashi, Kenichi Yoshida, Kenji Shimada, and Tomoyuki Nishita. Occlusion-Free Animation of Driving Routes for Car Navigation Systems. IEEE Transactions on Visualization and Computer Graphics, Vol. 12, No. 5, pp. 1141-1148, 2006. DOI: 10.1109/TVCG.2006.167
 Shigeo Takahashi, Issei Fujishiro, Yuriko Takeshima, and Tomoyuki Nishita. A Feature-Driven Approach to Locating Optimal Viewpoints for Volume Visualization. In Proceedings of IEEE Visualization 2005, pp. 495-502, Minneapolis, MN, USA, 2005. DOI: 10.1109/VISUAL.2005.1532834
 Shigeo Takahashi, Yuriko Takeshima, and Issei Fujishiro. Topological Volume Skeletonization and Its Application to Transfer Function Design. Graphical Models, Vol. 66, No. 1, pp. 22-49, 2004. DOI: 10.1016/j.gmod.2003.08.002
 Ryutarou Ohbuchi, Akio Mukaiyama, and Shigeo Takahashi. A Frequency-Domain Approach to Watermarking 3D Shapes. Computer Graphics Forum, Vol. 21, No. 3, pp. 373-382, 2002. DOI: 10.1111/1467-8659.t01-1-00597
 Shigeo Takahashi, Tetsuya Ikeda, Yoshihisa Shinagawa, Tosiyasu L. Kunii, and Minoru Ueda. Algorithms for Extracting Correct Critical Points and Constructing Topological Graphs from Discrete Geographical Elevation Data. Computer Graphics Forum, Vol. 14, No. 3, pp. 181-192, 1995. DOI: 10.1111/j.1467-8659.1995.cgf143 0181.x"