Dr. MA, WeiyinBSc (EastChinaEI), MSc (EastChinaIT), MEng (Leuven), PhD (Leuven), MACM/SIGGRAPH, MIEEE/Computer, MSIAM, MASME
Associate Professor
Contact InformationOffice:YEUNG-Y6707
Phone:+(852)-3442-9548
Email:mewma@cityu.edu.hk
Research InterestsComputer Aided Geometric Design
CAD/CAM/CAE
Isogeometric Analysis
3D Printing and Rapid Manufacturing

Dr. Ma is a faculty member in the Department of Mechanical Engineering, City University of Hong Kong, lecturing in areas of geometric design, CAD/CAM, finite element analysis, and rapid prototyping technologies. Before joining CityU in 1995, he worked as a research fellow at Materialise N.V., a rapid prototyping firm in Belgium, where he developed software modules on medical CAD modelling from Computed Tomography (CT) data. He also worked as a research fellow in the Department of Mechanical Engineering, Katholieke Universiteit Leuven, Belgium, on CAD/CAM, reverse engineering, dimensional metrology and dimensional inspection, and as an instructor and engineer in the Department of Mechanical Engineering (now School of Mechanical Engineering), East China Institute of Technology (now Nanjing University of Science and Technology), China, on dynamic measurement, mechanical vibration and design optimization. His present research interests include computer aided geometric design, CAD/CAM/CAE, isogeometric analysis and simulation, 3D printing and rapid manufacturing.
Education (All degrees are in Mechanical Engineering.)
Ph.D (1994), Katholieke Universiteit Leuven, Leuven, Belgium
Master of Engineering (1989), Katholieke Universiteit Leuven, Leuven, Belgium
Master of Science (1985), East China Institute of Technology, Nanjing, China
Bachelor of Science (1982), East China Engineering Institute, Nanjing, China
Current Research InterestsComputer Aided Geometric Design (CAGD),
Computer Graphics, Virtual Reality, Virtual Prototyping,
Computer Aided Design (CAD), Computer Aided Manufacturing (CAM),
Isogeometric Analysis (IGA), Computer Aided Engineering (CAE),
3D Printing and Rapid Manufacturing (RP)
Related Laboratories in MNEComputer Aided Design Laboratory (CAD)
Integrated Design and Prototyping Laboratory (IDPL)
Advanced Machining and Materials Processing Laboratory (AML)
Teaching Duties at CityUGE1325 From Ideas to Innovative Design
MBE3007 CAD/CAM
MBE4002 Computer Aided Process Planning
MBE4005 Finite Element Analysis
MBE4035 Geometric Design and Graphics Applications
MBE4048 Advanced Manufacturing Technologies
MBE4067 Virtual Prototyping and Manufacturing
MBE6001 CAD/CAM Integration
MEEM1001 Introduction to Product Design and Prototyping
MEEM4036 Rapid Prototyping Technologies
MEEM6049 Introduction to Advanced Manufacturing Technologies
Selected Research Projects (in the capacity of PI) (Research Associates or Ph.D. students are sought in areas of CAGD, CAD/CAM/CAE, isogeometric analysis (IGA), 3D printing and rapid manufacturing. Candidates in mechanical engineering or related fields with strong background in computer sciences and/or mathematics or with relevant experiences are preferred. Interested applicants please send complete CV to mewma@cityu.edu.hk.)
Unstructured T-splines with Global Higher Order Continuity for Isogeometric Analysis - Foundation Theory and Algorithms, RGC/GRF Research Grant #9042494 (CityU 11206917) (January 1, 2018 – December 31, 2020).
A Combined Scheme for Isogeometric Analysis of Complex Engineering Models, CityU Strategic Research Grant # 7004605 (September 1, 2016 - August 31, 2018).
Isogeometric Analysis with Enriched Basis Functions Based on Generalized B-splines, CityU Strategic Research Grant # 7004452 (September 1, 2015 - August 31, 2017).
Higher-Dimensional, Volumetric and Subdivision-based Modeling for Isogeometric Analysis, RGC/GRF Research Grant #9041782 (CityU 118512) (January 1, 2013 – June 30, 2016).
Parametrization of Catmull-Clark Solid for Isogeometric Analysis, CityU Strategic Research Grant #7002735 (May 1, 2012 - April 30, 2014).
Generalized Subdivision Schemes for Industrial Shape Design, CityU Strategic Research Grant #7002509 (October 1, 2009 - September 30, 2010).
A Class of New Algorithms for Loop Subdivision Surface Design - Theory and Applications, RGC/GRF Research Grant #9041372 (CityU 119208) (January 1, 2009 - December 31, 2011).
Discrete Differential Geometry and Its Applications in Design and Manufacturing, RGC/GRF Research Grant #9041249 (CityU 118607) (January 1, 2008 - December 31, 2009 – September 30, 2010).
High Order Tessellation of a NURBS-based CAD Model for Subdivision-based Modelling, RGC/CERG Research Grant #9041149 (CityU 118406) (January 1, 2007 - December 31, 2009 – June 30, 2010).
Adaptive Tessellation of Subdivision Surfaces for Design and Prototyping, CityU Strategic Research Grant #7001928 (July 1, 2006-June 30, 2008).
Foundation Algorithms for Effective Subdivision-based Modelling and Their Applications in Rapid Tooling Design, RGC/CERG Research Grant #9041023 (CityU 118805) (January 1, 2006 - December 31, 2008).
Fair Subdivision Surface Design for Sculptured Object Modelling, CityU Strategic Research Grant #7001789 (July 1, 2005 - June 30, 2007).
Reverse Engineering Based on Subdivision Surface Fitting, RGC/CERG Research Grant # 9040793 (CityU 113103) (December 1, 2003 - November 30, 2006).
Subdivision Surfaces for Integrated Design and Prototyping of Free-Form Objects, CityU Strategic Research Grant #7001296 (April 1, 2002 - March 30, 2005).
Advanced Manipulation Tools for Non-uniform Rational Subdivision Surfaces, CityU Strategic Research Grant #7001241 (September 1, 2001 - August 30, 2004).
Fractal Surface Reconstruction for Digital Representation of Sculptured Work, CityU Strategic Research Grant #7001074 (September 1, 2000 - August 30, 2003).
Incorporating Constraint-Based Approaches in a Virtual Reality Environment for Precise and Intuitive Product Modelling, RGC/CERG Research Grant #9040415 (CityU 101199) (October 1, 1999 - September 30, 2002).
Constructing Virtual Reality Models from Physical Prototypes through CT-Scanning, CityU Strategic Research Grant #700861 (July 1, 1998 - November 30, 2000).
Rapid Prototyping of Custom Joint Implants from CT-Images, RGC/CERG Research Grant #9040225 (CityU 104196) (December 1, 1996 - May 30, 1999).
Incorporating Electronic and Physical Models for Rapid Product Development, CityU Strategic Research Grant #7000589 (July 1, 1996 - September 30, 1998).
Selected Publications (Access to full text PDF through abstract pages or the direct links require login to relavent achival journal databases. For some other publications, please visit Google Scholar Citations or ResearchGate.)
Chen X D and Ma W Y, A competition flow method for computing medial axis transform, Journal of Computational and Applied Mathematics, Vol. 340, October 2018, pp. 342-359. (Abstract)
Ma Y and Ma W Y, Subdivision schemes with optimal bounded curvature near extraordinary vertices, Computer Graphics Forum, Vol. 37, No. 7, October 2018. (Abstract)
Deng C Y and Ma W Y, Efficient evaluation of subdivision schemes with polynomial reproduction property, Journal of Computational and Applied Mathematics, Vol. 294, March 2016, pp. 403–412. (Abstract)
Chen X D, Ma W Y, Rational cubic clipping with linear complexity for computing roots of polynomials, Applied Mathematics and Computation, Vol. 273, January 2016, pp. 1051–1058. (Abstract)
Chen X D, Ma W Y, A planar quadratic clipping method for computing a root of a polynomial in an interval, Computers & Graphics, Vol. 46, February 2015, pp. 89-98. (Abstract)
Yuan X Y, Ma W Y, Parametric mesh regularization for interpolatory shape design and isogeometric analysis over a mesh of arbitrary topology, Computer Methods in Applied Mechanics and Engineering, Vol. 284, February 2015, pp. 906-942. (Abstract)
Ji Z P, Ma W Y, Sun X F, Bas-relief modeling from normal images with intuitive styles, IEEE Transactions on Visualization and Computer Graphics, Vol. 20, No. 5, May 2014, pp. 675-685. (Abstract)
Fang M E, Ma W Y and Guozhao Wang, A generalized surface subdivision scheme of arbitrary order with a tension parameter, Computer-Aided Design, Vol. 49, April 2014, pp. 8–17. (Abstract)
Yuan X Y, Ma W Y, Mapped B-spline basis functions for shape design and isogeometric analysis over an arbitrary parameterization, Computer Methods in Applied Mechanics and Engineering, Vol. 269, February 2014, pp. 87-107. (Abstract)
Chen X D, Ma W Y, Deng C Y, Conditions for the coincidence of two quartic Bézier curves, Applied Mathematics and Computation, Vol. 225, December 2013, pp. 731-736. (Abstract)
Deng C Y and Ma W Y, A unified interpolatory subdivision scheme for quadrilateral meshes, ACM Transactions on Graphics, Vol. 32, No. 3, June 2013, Article No. 23:1-11. (Abstract)
Chen X D and Ma W Y, Geometric point interpolation method in R3 space with tangent directional constraint, Computer-Aided Design, Vol. 44, No. 12, December 2012, pp. 1217-1228. (Abstract)
Ma W Y, Wang H W, Interpolating an arbitrary number of joint B-spline curves by Loop surfaces, Computers & Graphics, Vol. 36, No. 5, August 2012, pp. 321-328. (Abstract)
Deng C Y, Ma W Y, Progressive interpolation of Loop subdivision surfaces with convergence rate control, Computer-Aided Design, Vol. 44, No. 5, May 2012, pp. 424-431. (Abstract)
Zhang R J, Ma W Y, An efficient scheme for curve and surface construction based on a novel interpolatory basis, ACM Transactions on Graphics, Vol. 30, No. 2, April 2011, Article No. 10:1-11. (Abstract)
Chen X D, Ma W Y, Jean-Claude Paul, Multi-degree reduction of Bézier curves using reparameterization, Computer-Aided Design, Vol. 43, No. 2, February 2011, pp. 161-169. (Abstract)
Fang M E, Ma W Y, Guozhao Wang, A generalized curve subdivision scheme of arbitrary order with a tension parameter, Computer Aided Geometric Design, Vol. 27, No. 9, December 2010, pp. 720-733. (Abstract)
Zhang R J, Ma W Y, Consolidated sharp bounds for Bézier curve approximation with cutdown and corner cutting polygons, Computer Aided Geometric Design, Vol. 27, No. 5, June 2010, pp. 382-394. (Abstract)
Chen X D, Ma W Y, Jean-Claude Paul, Cubic B-spline curve approximation by curve unclamping, Computer-Aided Design, Vol. 42, No. 6, June 2010, Pages 523-534. (Abstract)
Ma W Y, Wang H W, Loop subdivision surfaces interpolating B-spline curves, Computer-Aided Design, Vol. 41, No. 11, November 2009, pp. 801-811. (Abstract)
Wang H W, Ma W Y. Biorthogonal wavelets based on interpolatory subdivision, Computer Graphics Forum, Vol. 28, No. 6, September 2009, pp. 1572-1585. (Abstract)
Zhang R J, Ma W Y, A simple and efficient approximation of a Bézier piece by its cutdown polygon, Computer Aided Geometric Design, Volume 26, No. 3, March 2009, Pages 336-341. (Abstract)
Li G Q and Ma W Y, Composite root 2 subdivision surfaces, Computer Aided Geometric Design, Vol. 24, No. 6, October 2007, pp. 339-360. (Abstract)
Li G Q and Ma W Y, A method for constructing interpolatory subdivisions and blending subdivisions, Computer Graphics Forum, Vol. 26, No. 2, June 2007, pp. 185–201. (Abstract)
Zhang R J, Ma W Y, Some improvements on the derivative bounds of rational Bézier curves and surfaces, Computer Aided Geometric Design, Vol. 23, No. 8, 2006, pp. 563–572. (Abstract)
Pang M Y, Ma W Y, Pan Z G and Zhang F Y, Smooth approximation to surface meshes of arbitrary topology with locally blended radial basis functions, Computer-Aided Design and Applications, Vol. 3, No. 5, June 2006, pp. 587-596. (Abstract)
Li G Q, Ma W Y, Interpolatory ternary subdivision surfaces, Computer Aided Geometric Design, Vol. 23, No. 1, January 2006, pp. 45-77. (Abstract)
Ma W Y, Subdivision surfaces for CAD – an overview, Computer-Aided Design, Vol. 37, No. 7, June 2005, pp. 693-709. (Abstract)
Ma W Y and Wu Z Z, Texture synthesis on subdivision surfaces, Computer-Aided Design & Applications, Vol. 2, Nos. 1-4, June 2005, pp 449-458. (Abstract)
Li G Q, Ma W Y, Bao H J, A new interpolatory subdivision scheme for quadrilateral meshes, Computer Graphics Forum, Vol. 24, No. 1, March 2005, pp. 3-16. (Abstract)
Piegl L A, Ma W Y and Tiller W, An alternative method of curve interpolation, The Visual Computer, Vol. 21, Nos. 1-2, February 2005, pp. 104–117. (Abstract)
Ma W Y, But W C, He P R, NURBS-based adaptive slicing for efficient rapid prototyping, Computer-Aided Design, Vol. 36, No. 13, November 2004, pp. 1309-1325. (Abstract)
Ma W Y, Zhong Y M, Tso S K, Zhou T X, A hierarchically structured and constraint-based data model for intuitive and precise solid modelling in a virtual reality environment, Computer-Aided Design, Vol. 36, No. 10, September 2004, Pages 903-928. (Abstract)
Ma W Y, Ma X H, Tso S K, Pan Z G, A direct approach for subdivision surface fitting from a dense triangle mesh, Computer-Aided Design, Vol. 36, No. 6, May 2004, pp. 525-536. (Abstract)
Li G Q, Ma W Y, Bao H J, Root 2 subdivision for quadrilateral meshes, The Visual Computer, Vol. 20, Nos. 2-3, May 2004, pp. 180-198. (Abstract)
Li G Q, Bao H J, Ma W Y, A unified approach for faring arbitrary polygonal meshes, Journal of Graphical Models, Vol. 66, No. 3, May 2004, pp. 127-179. (Abstract)
Piegl L A, Ma W Y, Tiller W, Surface fitting to random data via constrained shaping, International Journal of Shape Modeling, Vol. 9, No. 1, June 2003, pp. 1-20. (Abstract)
Ma W Y and Zhao N L, Smooth multiple B-spline surface fitting with Catmull-Clark surfaces for extraordinary corner patches, The Visual Computer, Vol. 18, No. 7, November 2002, pp. 415-436. (Abstract)
Liu S B, and Ma W Y, Motif analysis for automatic segmentation of CT-surface contours into individual surface features, Computer-Aided Design, Vol. 33, No. 14, December 2001, pp. 1091-1109. (Abstract)
Ma Z M, Zhang W J and Ma W Y, Semantic measure of fuzzy data in extended possibility-based fuzzy relational databases, International Journal of Intelligent Systems, Vol. 15, No. 8, August 2000, pp. 705-716. (Abstract)
Liu S B and Ma W Y, Seed-growing segmentation of 3D surfaces from CT-contours data, Computer-Aided Design, Vol. 31, No. 8, July 1999, pp. 517-536. (Abstract)
Ma W Y and Peiren He, B-spline surface local updating with unorganized points, Computer-Aided Design, Vol. 30, No. 11, September 1998, pp. 853-862. (Abstract)
Ma W Y and Kruth J P, NURBS curve and surface fitting for reverse engineering, International Journal of Advanced Manufacturing Technology, Vol. 14, No. 12, 1998, pp. 918-927. (Abstract)
Ma W Y and Kruth J P, Parametrization of randomly measured points for least squares fitting of B-spline curves and surfaces, Computer-Aided Design, Vol. 27, No. 9, September 1995, pp. 663-675. (Abstract)
Last modified on 28 December, 2018