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Keynote Speaker 1
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Tomoyuki Nishita
Department of Complexity Science and Engineering,
Graduate School of Frontier Sciences,
The University of Tokyo
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Title: Illumination Simulation due to Various Light Sources and Light Scattering |
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A high precision illumination model is indispensable for lighting simulation and realistic image synthesis of interior and natural scenes. For the purpose of improving realism, research on global illumination such as multiple scattering of light between particles is important. My talk includes the followings (mainly, sampling technics for illumination modes):
1) Shading models for various types of light sources such as area sources, sky light. The effect of shadows and interreflection of light created by room obstructions is an important factor.
2) Rendering of natural scenes consisting small particles: the colors are calculated by scattering effect for the natural phenomena such as atmospheric scattering (shaft of light), clouds, water color, smoke and fire.
3) Solutions for global illumination: Monte Carlo techniques are widely used for realistic rendering because they provide unbiased solutions. We introduce an effective solution for multiple scattering in inhomogeneous media.
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Biography: |
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Tomoyuki Nishita is a professor in the Department of Complexity Science and Engineering (also in the Department of Information Science) at the University of Tokyo, Japan since 1998. He received his BE, ME and Ph.D in Engineering in 1971, 1973, and 1985, respectively, from Hiroshima University. He taught at Fukuyama University from 1979 to 1998 He was an associate researcher in the Engineering Computer Graphics Laboratory at Brigham Young University from 1988 to 1989. His research interests center in CG including lighting/shading models (radiosity), natural phenomena, real-time rendering, geometric modeling, and non-photorealistic rendering. He is one of the pioneers of radiosity method. He has written 15 SIGGRAPH papers and 16 EUROGRAPHICS papers.
Dr. Nishita received Research Award on Computer Graphics from Information Processing Society of Japan in 1987, and also received Steaven A. Coons award from ACM SIGGRAPH in 2005. He was a president of The Institute of Image Electronics Engineers of Japan in 2009-2010.
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Keynote Speaker 2
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Professor C.-C. Jay Kuo
University of Southern California
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Title: Interactive Browsing of Large-Scale 3D Repository and Feature-Preserving Model Simplification |
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We consider the problem of interactive browsing of a large scale 3D repository in this talk. The conventional 3D search engine displays static 2D thumbnails (i.e. simplified image icons) on the search page for the browsing purpose. However, a 2D thumbnail does not represent its original 3D model well and does not allow user interaction (e.g. rotation). One key component in the browsing system is feature-preserving 3D model simplification. Although there exist quite a few mesh simplification techniques, most of them are not designed to preserve the salient features of a given model. For example, the limbs and the body of a human model can meld together when it is extremely simplified. We propose two feature-preserving shape decomposition schemes (i.e., mesh-based and voxel-based) and compare their performance. The overall system includes an offline process and an online process. For the offline process, a 3D mesh is first decomposed into several significant components. For each decomposed part, its skeleton and body measurements are extracted and saved as the shape descriptor. Subsequently, its thumbnail is created according to the shape descriptor and saved as the thumbnail descriptor. In the online process, according to user's preference, the system can either render the 3D thumbnail directly with its pre-generated thumbnail descriptor or re-generate the 3D thumbnail descriptor based on a pre-generated shape descriptor without starting from the scratch. As a result, the data size of a thumbnail descriptor is much less than its original mesh and can be downloaded quickly. Rendering a simplified thumbnail demands less hardware resource, and the online thumbnail viewer can display multiple 3D thumbnails simultaneously within a few seconds.
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Biography: |
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Dr. C.-C. Jay Kuo received the Ph.D. degree from the Massachusetts Institute of Technology in 1987. He is now with the University of Southern California (USC) as Director of Signal and Image Processing Institute and Professor of EE, CS and Mathematics. His research interests are in the areas of digital media processing, multimedia compression, communication and networking technologies, and embedded multimedia system design. Dr. Kuo is a Fellow of AAAS, IEEE and SPIE. Dr. Kuo has guided about 108 students to their Ph.D. degrees and supervised 23 postdoctoral research fellows. Currently, his research group at USC consists of around 30 Ph.D. students (see website http://viola.usc.edu), which is one of the largest academic research groups in multimedia technologies. He is a co-author of about 190 journal papers, 810 conference papers and 10 books. Dr. Kuo is Editor-in-Chief for the Journal of Visual Communication and Image Representation, and has served as Editor for 10 other journals. Dr. Kuo received the National Science Foundation Young Investigator Award (NYI) and Presidential Faculty Fellow (PFF) Award in 1992 and 1993, respectively. He received the best paper awards from the multimedia communication Technical Committee of the IEEE Communication Society in 2005, from the IEEE Vehicular Technology Fall Conference (VTC-Fall) in 2006, and from IEEE Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP) in 2006. He was an IEEE Signal Processing Society Distinguished Lecturer in 2006, a recipient of the Okawa Foundation Research Award in 2007, the recipient of the Electronic Imaging Scientist of the Year Award in 2010, the holder of the Fulbright-Nokia Distinguished Chair in Information and Communications Technologies from 2010-2011, and a recipient of the Pan Wen-Yuan Outstanding Research Award in 2011.
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Keynote Speaker 3
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Qiang Du
Verne M. Willaman Professor
Department of Mathematics
Pennsylvania State University
University Park, PA 16802, USA
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Title: Centroidal Voronoi Tessellations and Optimal Triangulations |
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The notion of Centroidal Voronoi Tessellation has becomea useful tool in many applications ranging from image anddata analysis to physics and biology. In this talk, wefirst introduce the basic concepts and properties ofcentroidal Voronoi tessellations and discuss the relevantmathematical theory, various generalizations, numericalalgorithms and applications in a broad range of fields.We then consider special applications of CVTs in the areaof CAD and also mesh generation and optimization. Aparticular focus is on the topic of optimal CVT-based triangulations in high space dimensions. For referenceson CVTs, we refer to 1) Q. Du, V. Faber, and M. Gunzburger, Centroidal Voronoi tessellations:Applications and algorithms, SIAM Review 41 (1999), 637-676. 2) Q. Du, M. Gunzburger and L. Ju, Advances in studies and applications of centroidal Voronoi tessellations, Numer. Math. Theo. Meth. Appl. 3 (2010), 119-142.
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Biography: |
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Professor Qiang Du received his BS degree from the University of Scienceand Technology of China in 1983 and PhD from Carnegie-Mellon Universityin 1988. After first serving as a Dickerson instructor at the Universityof Chicago, he has held academic appointments at several universitiesand national labs including Michigan State University, Iowa State University, Hong Kong University of Science and Technology, Carnegie Mellon University, and Argonne National Lab. He joined the faculty of the Pennsylvania State University in 2001 and he is presently the Verne Willaman Professor ofMathematics and a Professor of Materials Science and Engineering. Prof.Du has published over 150 scientific papers and has been invited tospeak at many research institutions and international conferences.He is on the editorial boards of a number of international journals including SIAM Journal of Numerical Analysis, Discrete and Continuous Dynamic Systems, Applied Mathematics Research Exp., Applied MathematicsResearch eXpress, Communications in Computational Physics, NumericalMathematics, Theory, Methods and Applications, etc.. Prof. Du receivedthe Feng Kang prize in scientific computing in 2005, the faculty outreachand extension award at Iowa State University in 2000, the Frame facultyteaching award at Michigan State University in 1992, and the Eberlycollege of science medalat the Pennsylvania State University in 2006.
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Keynote Speaker 4
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Sara McMains
Associate Professor
Mechanical Engineering
University of California, Berkeley
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Title: Geometric Cleanability and Drainability Analysis |
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High pressure waterjets are commonly used to clean manufacturing byproducts off of mechanical components, after which the water must be drained. Cleaning workpieces effectively requires that the waterjet lance be able to access all the internal passageways such that the entire surface is subject to sufficiently high impact pressures. In order to minimize the subsequent draining and drying time for these same internal passageways, workpieces are mounted on a slowly rotating carrier, ideally draining the entire part under gravity while rotating around only one axis.
I will describe geometric accessibility analysis formulations and techniques we have been developing to address these problems in cleanability evaluation. For lance accessibility analysis we take a configuration space (C-space) approach to addressing the problems of both optimum surface proximity for effective cleaning and collision avoidance between the cleaning lance and the workpiece. For drainability, I will present our algorithm to determine if rotation around a given 3D axis can drain all trapped water from a workpiece.
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Biography: |
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Sara McMains is an Associate Professor in the Department of Mechanical Engineering at the University of California, Berkeley. Her research interests include geometric DFM (Design for Manufacturing) feedback, geometric solid modeling, CAD/CAM, GPU algorithms, computer aided process planning, layered manufacturing, computer graphics, visualization, and virtual prototyping. She received her B.A. from Harvard in Computer Science, and her M.S. and Ph.D. from UC Berkeley in Computer Science with a minor in Mechanical Engineering. She is the recipient of Best Paper Awards from Usenix (1995) and ASME DETC (2000), a Best Poster and a Best Paper Award from the ACM Solid and Physical Modeling Symposium (2007, 2008 -- 2nd place), and the NSF CAREER Award (2005).
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Keynote Speaker 5
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Kenji Shimada
Theodore Ahrens Professor in Engineering
Department of Mechanical Engineering
Carnegie Mellon University
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Title: Sketch-based Interfaces for 3D Shape Modeling |
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Traditional user interfaces for 3D shape modeling are based on the WIMP (Window, Icon, Menu, Pointer) paradigm. While such user interfaces have been adopted commonly and successfully in modern 3D shape modeling systems, there have been emerging interests and attempts to devise more intuitive and efficient sketch-based interfaces for various 3D shape modeling applications such as product design, architectural design, movie and videogame production, medical diagnosis, and surgical planning. In the first half of this talk, I will give an overview of the current issues and trends of sketch-based interfaces for 3D shape modeling including: the sketch-acquisition hardware; interpretation and beautification of raw strokes; 2D-to-3D conversion; free-form surface generation; iterative shape modification; and conventional and emerging applications. In the second half of the talk, I will focus on and present four applications of sketch-based interfaces that our research group has worked on in the past decade: automobile styling design, pen-based volume decomposition, image-based 3D modeling of human anatomy, and motion teaching of kinematically redundant robots.
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Biography: |
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Dr. Kenji Shimada is Theodore Ahrens Professor in Engineering at Carnegie Mellon University in the Department of Mechanical Engineering, the Department of Biomedical Engineering (courtesy appointment), the Department of Civil and Environmental Engineering (courtesy appointment), and the Robotics Institute (courtesy appointment). Dr. Shimada received his B.S. and M.S. from the University of Tokyo, and his Ph.D. from the Massachusetts Institute of Technology. His research interests are in the areas of geometric modeling, computational geometry, computer graphics, factory robotics, computer assisted surgery, and human body simulation. Prior to joining Carnegie Mellon in 1996, he was Manager of Graphics Applications at IBM Research, Tokyo Research Laboratory. At IBM Research Dr. Shimada initiated and led various research and consultation projects with IBM customers and the Japanese government, as well as with the company’s internal product development and manufacturing groups. At Carnegie Mellon, Dr. Shimada has explored a new physically based approach to key geometric problems in engineering and medical applications, such as finite element mesh generation, interactive curve and surface design, three-dimensional shape reconstruction, robotic path generation, and surgical planning. His physically based mesh generation method, BubbleMesh®, has been licensed to and used by over 60 companies in manufacturing industries. A member of ACM, ASME, IEEE Computer Society, JSIAM, and SAE, Dr. Shimada is the recipient of a number of awards, including Best Author Award from the Japan Society for Industrial and Applied Mathematics in 2006, ASME Design Automation Best Paper Award in 2004, IPSJ Best Paper Award in 2002, NSF CAREER Award in 2000, Honda Initiation Grant Award in 1998, George Tallman Ladd Award for Excellence in Research from the Carnegie Institute of Technology in 1998, IPSJ Yamashita SIG Research Award in 1994, and Nicograph Best Paper Award in 1994. Dr. Shimada currently serves on the editorial board of four international journals and has served as Chairman of many academic conferences and committees, including Geometric Modeling and Processing in 2006, ASME Design Automation Conference in 2004, Symposium on Unstructured Mesh Generation in 2001, and International Meshing Roundtable in 1999. He is the author or co-author of over 160 peer-reviewed papers in journals and conferences, and the inventor or co-inventor of over 20 patents in the US, Japan, and Europe.
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Keynote Speaker 6
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Myung-Soo Kim
Professor
School of Computer Science and Engineering
Seoul National University, South Korea
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Title: Efficient Algorithms for Freeform Geometric Models |
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We present a new approach to the development of efficient geometric algorithms for freeform curves and surfaces. Preprocessing the given curves and surfaces and representing them in a hierarchical data structure, we show that a variety of geometric algorithms can be greatly accelerated. We demonstrate the effectiveness of this approach by developing real-time algorithms for collision detection, minimum and Hausdorff distance computation, convex hull computation for freeform geometric models.
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Biography: |
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Myung-Soo Kim is a Professor of the School of Computer Science and Engineering. In the past, he served as the CIO of Seoul National University and the Director of University Computer Center. He also served as the Director of Institute of Computer Technology and as the Head of School of Computer Science and Engineering, Seoul National University. His research interests are in computer graphics and geometric modeling. Prof. Kim received BS and MS degrees from Seoul National University in 1980 and 1982, respectively. He continued his graduate study at Purdue University, where he received an MS degree in applied mathematics in 1985 and MS and PhD degrees in computer science in 1987 and 1988, respectively. Since then until 1998, he was with the Department of Computer Science, POSTECH, Korea. Prof. Kim serves/served on the editorial boards of Computer-Aided Design, Computer Aided Geometric Design, Computer Graphics Forum, and Int'l J of Shape Modeling. He also edited more than ten special issues of journals such as Computer-Aided Design, Graphical Models, J of Visualization and Computer Animation, The Visual Computer, and Int'l J of Shape Modeling. With two other editors, Gerald Farin and Josef Hoschek, he edited Handbook of Computer Aided Geometric Design, North-Holland, 2002. In 2010, he served as a technical program co-chairof the ACM Symposium on Solid and Physical Modeling, Haifa, Israel. In 2011, he also serves as a program co-chair of the SIAM Conference on Geometric and Physical Modeling, Orlando, USA.
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