School of Mechanical and Production Engineering 

Lee Yong Tsui
Director, MSc CIM program
Deputy President, SIGGRAPH Singapore Chapter

Associate Professor
BSc (Leeds, 1977), MS (Rochester, 1980), PhD (Leeds, 1983)
Tel: 67905493 


Academic History & Professional Experience 

In the 1980s, worked in software development in CAD and solid modelling for 7.5 years at PAFEC Ltd. in Nottingham, UK.

Joined NTU in January 1991.

Chairman of the inaugural SIGGRAPH Asia conference in December 2008, here in Singapore. Great conference; loads of good contents, some 3400 attendees. Tough job, but great experience and thoroughly enjoyed it. Best of all, got to know many good people in computer graphics.

Research Interests 

Computer in engineering in general. Particularly geometric modelling, computer graphics, CAD/CAM and their applications. Current pet topic is on 3D shape recovery from drawings and sketches. Also the simulation of vehicle dynamics and collision, with a view to recreate the situations that lead to a road accident.


Like sports, keen squash player. But a torn Achilles tendon on the squash court in 2004 put paid to that. So now reduced to a brisk walker. But walk mainly out of need than want. Have to get some exercise in somehow.

Die hard Leeds United supporter. Have little to cheer lately. Promotion to the Championship in 2010 well not quite there yet.

Nature buff.

Recent Publications

Y Sun and YT Lee, Regularity Selection for Effective 3D Object Reconstruction from a Single Line Drawing, Pattern Recognition Letters, Volume 29, Issue 10, Pages 1486-1495, July 2008.

YQ Guan, YY Cai, XC Zhang, YT Lee and M Opas, Adaptive Correction Technique for 3D Reconstruction of Fluorescence Microscopy Images, Microscopy Research and Technique, Volume 71, Issue 2, Pages 146 157, 2008.

HL Zou and YT Lee, Constraint-Based Beautification and Dimensioning Of 3D Polyhedral Models Reconstructed from 2D Sketches, Computer-aided Design, Volume 39, No. 11, pages 1025-1036, November 2007.

YQ Guan, YY Cai, M Opas, ZW Xiong, and YT Lee. A VR Enhanced Collaborative System for 3D Confocal Microscope Image Processing, Visualization and Quantification. International Journal of Image and Graphics, Volume 6, Number 2, pp231-250, 2006.

YQ Guan, YY Cai, YT Lee and M Opas. An Automatic Method for Identifying Appropriate Gradient Magnitude for 3D Boundary Detection of Confocal Image Stacks. Journal of Microscopy, Volume 223, pp66-72, 2006.

HL Zou and YT Lee, Skewed Rotational Symmetry Detection from a 2D Line Drawing of a 3D Polyhedral Object, Computer-Aided Design, Volume 38, Number 12, pp1224-1232 Dec 2006.

HL Zou and YT Lee, Detecting Minimum Over-constrained Sub-graphs in 2D and 3D based on Degree of Freedom Analysis, Computer-aided Design and Applications, Volume 2, Number1-4, pp393-402, 2005.

Liu Jianzhuang, Lee Yong Tsui and Cham Wai-Kuen, Identifying Faces in a 2D Line Drawing Representing a Manifold Object, IEEE Transaction on Pattern Analysis and Machine Intelligence, Volume 23, Number 10, pp 1106-1119, 2001.

Liu Jianzhuang, Lee Yong Tsui, A Graph-based method for Face Identification from a Single 2D Line Drawing, IEEE Transaction on Pattern Analysis and Machine Intelligence, Volume 23, No. 10, Oct 2001, pp1089-1106.

Lee Y.T., Fang L., 2000, Accurate Modelling of Complex Functional Surfaces for Mechanical Design using Freeform Surfaces, Trans. ASME Journal of Mechanical Design, Vol. 12, No. 2, pp 236 - 239.

Lee Y.T., Fang L., 1999, Non-linear Transformation of Freeform Curves and Surfaces for CAD, Engineering Computations, Vol. 16, No. 6, pp 787 - 806.

Lin Feng, Seah Hock Soon, Lee Y.T., 1997, Structure modeling and context-free grammar: Exploring a new approach for surface boundary construction, Computers & Graphics, Vol. 21, No. 6.

Lee Y.T., Koh TH, Lee EW, 1997, An object oriented model of apparel pattern making, International Journal of Clothing Science and Technology, Vol. 9, No. 5.

Lee Y.T., Tor S.B., Soo EL, 1996, Mathematical Modelling and Simulation of Pop-up Books, Computers & Graphics, Vol. 20, No. 1, pp 21 - 31.

Lee Y.T., Koh TH, Lee EW, 1995, Analysis of the Apparel Pattern Making Process, International Journal of Clothing Science and Technology, Vol. 7, No. 4, pp 54 - 64.

Lee Y.T., Koh A.S., 1995, Performing Euler Angle Rotations in CAD Systems, Computer-Aided Design, Vol. 27, No. 1, pp 75 - 78.

Lee Kin Kok, Lee Yong Tsui, Xie Ming, 1999, Designing A Human Vehicle Interface for An Intelligent Community Vehicle, IEEE/IEEJ/JSAI International Conference on Intelligent Transportation Systems (ITS'99), Japan.

Li Hui, Lee Yong Tsui and Thomas Gong, Layered 5-Axis Machining, Conference on Sculptured Surface Machining, University of Michigan, Ann Arbor, November 9-11, 1998.

Y.T. Lee, Teaching CAD/CAM and Solid Modelling to Engineers, Proceedings of the Teaching Solid Modelling Workshop, Winchester, April 1996, pp 9-15.

Suresh Argawal, Lee Yong Tsui, Tor Shu Beng, Concurrent Feature-Based Design and Manufacturing, Proceedings of the International Journal of Manufacturing Excellence (MEXEL), Organised by the Indian Institute of Production Engineers, Bangalore, July 1995.

Koh Aik Siong and Lee Yong Tsui, Kinematic And Dynamic Simulation Of Weapons, Proceedings from the Defence R&D, MINDEF-NTU Seminar, Singapore November 1993, pp 119-124.