题目: Function-based shape modeling and haptic interaction on the web
主讲人: Dr. Alexei Sourin （Nanyang Technological University）
时间: 12月7日星期五上午10点
地点:浙大紫金港校区图书信息中心B楼4楼CAD&CG国家重点实验室402室
报告摘要：
This talk overviews different platforms for building shared virtual spaces (VRML/X3D, Active Worlds, Croquet, Second Life) and concentrates on one where mathematical functions are used as building blocks for such worlds.FVRML/FX3D is a function-based extensions of Virtual Reality Modeling Language (VRML) and its successor Extensible 3D (X3D). It allows for defining time-dependent geometric shapes, their appearances, physical properties and operations by analytical parametric, implicit and explicit functions which can be used concurrently. This approach opens VRML and X3D to practically any type of geometry, 3D colors, geometric textures and sophisticated operations. It also allows for a haptic rendering of surfaces and interiors of the objects. Since the function-based models are small in size, they can be efficiently used for solving collaborative modeling and web visualization problems. The defining functions can be functions of time that allows for easy definition of fancy animation applied to geometry and appearance of the shapes. The FVRML/FX3D extension is illustrated by its application to teaching computer graphics and as a part of the research projects Virtual Campus of NTU, Collaborative Virtual Shape Modeling Laboratory and Haptic Brain Segmentation.
简历：
Dr. Alexei Sourin received his M.Eng. and Ph.D. degrees in computer graphics from the Moscow Engineering Physics Institute, Russia (MEPhI) in 1983 and 1988, respectively. He was a recipient of the prestigious awards Medal of the Ministry of Higher Education of the USSR for the Best Student's Research Project and Honorary Diploma of the Academy of Sciences of the USSR. From 1983 to 1993 he was a researcher at MEPhI where he worked on different scientific visualization and computer animation projects. Since 1993 he held faculty positions at Nanyang Technological University (NTU) in Singapore. Currently he is an Associate Professor with the School of Computer Engineering at NTU. He is also a deputy director of the NTU's Centre for Financial Engineering. His research interests are in function-based shape modeling, shared virtual environments, web visualization and visualization on the Grid, cyber-medicine, scientific visualization, and cyber-learning. He is a co-founder of the function representation (FRep) concept which he further developed and applied in several interactive free-form shape modeling, virtual reality and medical visualization projects. He has also proposed a function-based web-visualization technique where analytical formulas are used for defining geometry, appearance and physical properties of the objects in shared virtual scenes. Dr. Sourin is also one of the pioneers of electronic education in Singapore. He authored a book "Computer graphics. From a Small Formula to Cyberworlds" which is adopted for teaching by several universities in South-East Asia. He is a Senior Member of IEEE and a member of ACM SIGGRAPH. He is on the Editorial Boards of three international journals. He was on the international program committees of over 50 international conferences. He is a coordinator of the International Conferences on Cyberworlds for which he was a Co-Chair in 2003-2007. More details are available at *http://www.ntu.edu.sg/home/assourin*.
欢迎各位师生踊跃参加。
主讲人: Dr. Alexei Sourin （Nanyang Technological University）
时间: 12月7日星期五上午10点
地点:浙大紫金港校区图书信息中心B楼4楼CAD&CG国家重点实验室402室
报告摘要：
This talk overviews different platforms for building shared virtual spaces (VRML/X3D, Active Worlds, Croquet, Second Life) and concentrates on one where mathematical functions are used as building blocks for such worlds.FVRML/FX3D is a function-based extensions of Virtual Reality Modeling Language (VRML) and its successor Extensible 3D (X3D). It allows for defining time-dependent geometric shapes, their appearances, physical properties and operations by analytical parametric, implicit and explicit functions which can be used concurrently. This approach opens VRML and X3D to practically any type of geometry, 3D colors, geometric textures and sophisticated operations. It also allows for a haptic rendering of surfaces and interiors of the objects. Since the function-based models are small in size, they can be efficiently used for solving collaborative modeling and web visualization problems. The defining functions can be functions of time that allows for easy definition of fancy animation applied to geometry and appearance of the shapes. The FVRML/FX3D extension is illustrated by its application to teaching computer graphics and as a part of the research projects Virtual Campus of NTU, Collaborative Virtual Shape Modeling Laboratory and Haptic Brain Segmentation.
简历：
Dr. Alexei Sourin received his M.Eng. and Ph.D. degrees in computer graphics from the Moscow Engineering Physics Institute, Russia (MEPhI) in 1983 and 1988, respectively. He was a recipient of the prestigious awards Medal of the Ministry of Higher Education of the USSR for the Best Student's Research Project and Honorary Diploma of the Academy of Sciences of the USSR. From 1983 to 1993 he was a researcher at MEPhI where he worked on different scientific visualization and computer animation projects. Since 1993 he held faculty positions at Nanyang Technological University (NTU) in Singapore. Currently he is an Associate Professor with the School of Computer Engineering at NTU. He is also a deputy director of the NTU's Centre for Financial Engineering. His research interests are in function-based shape modeling, shared virtual environments, web visualization and visualization on the Grid, cyber-medicine, scientific visualization, and cyber-learning. He is a co-founder of the function representation (FRep) concept which he further developed and applied in several interactive free-form shape modeling, virtual reality and medical visualization projects. He has also proposed a function-based web-visualization technique where analytical formulas are used for defining geometry, appearance and physical properties of the objects in shared virtual scenes. Dr. Sourin is also one of the pioneers of electronic education in Singapore. He authored a book "Computer graphics. From a Small Formula to Cyberworlds" which is adopted for teaching by several universities in South-East Asia. He is a Senior Member of IEEE and a member of ACM SIGGRAPH. He is on the Editorial Boards of three international journals. He was on the international program committees of over 50 international conferences. He is a coordinator of the International Conferences on Cyberworlds for which he was a Co-Chair in 2003-2007. More details are available at *http://www.ntu.edu.sg/home/assourin*.
欢迎各位师生踊跃参加。
