Xiuzi Ye

Last updated May 26, 1998

Table of Contents:

  1. Summary
  2. Education
  3. Awards
  4. Professional Services
  5. Publications
  6. Contact


Xiuzi Ye is currently a Principal Engineer at SolidWorks Corporation, a company developing PC and Windows/NT based 3D CAD software product and a subsidiary of Dassault Systemes (CATIA), France. He is also an Affiliate Research Scientist at Design Laboratory, Massachusetts Institute of Technology (MIT). Dr. Ye is responsible for the company's complex geometry design in a feature and parametric/constraint based solid modeling environment, including constraint and dimension driven complex curves, surfaces and solids design, interrogation and integration. These included creation and interrogation of generalized and variational swept and lofted objects, tangency and curvature matching of surfaces and the integration of complex curves and surfaces into solids. As an affiliate to MIT, he is also involving academic and research activities in MIT Design Laboratory. He served as a Member of Doctoral Thesis's Committee of several Ph.D. candidates at MIT Design Laboratory.

Prior to this, from 1994 to 1995, Dr. Ye was a Postdoctoral Research Associate at MIT Design Laboratory. His research at MIT addressed (1) data integration among CIM systems. He developed an information model for marine propulsors. This model intends to be an application protocol for the modeling, representation, integration and exchange of product data from design, manufacturing, inspection, analysis and other life-cycle activities of marine propulsors based on the STEP mechanisms. It is the base for the integration of marine propulsor related computer-aided automation systems and for the implementation of a standardized propulsor database which stores the product data and their neutral descriptions for marine propulsors; (2) the geometric design of surfaces with functional hydro- and aerodynamic constraints; (3) robust issues of solids modeling based on interval arithmetic; and (4) the development of continuous multi-dimensional geographical database systems.

Between 1989 to 1994, he was pursuing his Ph.D. at CAD Laboratory of Technical University (TU) of Berlin, Germany. Dr. Ye's doctoral thesis research at TU Berlin addressed the problems of geometric construction and visual interrogation of smooth free form rectangle-grided and multi-sided surfaces by tangent-plane and curvature continuous interpolation of curve meshes using tensor-product polynomial Bezier patches. This design methodology is to simulate current industrial design practice where surface definitions are usually produced from drawings in which suitable sets of curves are first designed and adjusted carefully to yield a fair surface. These methods can easily be integrated into the state-of-the-art CAD/CAM systems. The novel features of his thesis included formulation and solutions of the compatibility conditions of arbitrary numbers of surface patches joining at a common point, and the use of possibly low polynomial degrees of the surface patches. Dr. Ye's research at TU Berlin also included information technology, product data modeling, conversion and exchange based on the STEP standard.

Between 1987 to 1989, Dr. Ye was a Research Engineer at the State Key Laboratory of CAD/CG at Zhejiang University, China. He involved in the development of the geometric modeling system MESSAGE (Modeling Entities using Solids, Surfaces and Geometric Entities). He was responsible for the system's surface modeling and related graphical interface. The project was part of a Chinese National Science and Technology Progress Award. He also involved in an industrial project on the fairing of an aircraft fuselage during his graduate study.

Dr. Ye has authored and co-authored over 30 technical journal and conference papers. He serves as a member of the editorial board of Computer Aided Drafting, Design and Manufacturing Journal, and a member of the International Program Committee of IASTED CGIM'98 and CGIM'99 (International Conferences on Computer Graphics and Imaging).


Ph.D. in Engineering (Dr.-Ing.) in CAD/CAM, June 1994
Technical University of Berlin, Germany, 1989 -- 1994
Supervisor: Prof. Horst Nowacki

M.Sc. in CAGD and Computer Graphics, May 1987 
Zhejiang University, China, 1984 -- 1987
Supervisor: Professors Youdong Liang and Qunsheng Peng

B.S. in Applied Mathematics, May 1984 
Zhejiang University, China, 1980 -- 1984 


Best Referee Award, Computer Aided Design, 1995.

German Academic Exchange Service Scholarship (DAAD) Award,
August 1989 -- October 1990.

Best Graduate Student Award, Graduate School, 
Zhejiang University, China, July 1987.

Professional Services

Member of Editorial Board of International Journal 
Computer Aided Drafting, Design and Manufacturing

Member of International Program Committee of IASTED CGMI'98 and CGMI'99
(International Conference On Computer Graphics and Imaging)
Member of Doctoral Thesis Committees
Massachusetts Institute of Technology

Evan C. Sherbrooke: 3D shape interrogation by Medial Axis Transform,
March 1995 

Chun-Yi Hu: Towards robust solid modeling for curved objects, May

Jingfang Zhou:  Simplex splines for scientific databases, May 1995 

Wonjoon Cho: Numerically robust and topologically reliable
approximation of curves and surfaces, January 1997.
Reviewer of Journals and Conferences
Computer Aided Design

Computer Aided Geometric Design

IEEE Transactions on Visualization and Computer Graphics

ASME Journal of Mechanical Design

Graphical Models and Image Processing

IEEE Visualization'95

ACM Symposium on Computational Geometry'96


IEEE Visualization'96

Workshop on Applied Computational Geometry'97

Solid Modeling'97

Computer Graphics International'98

Computer Graphics and Imaging'98

The Mathematics of Surfaces VIII

International Journal of Shape Modeling

Mathematical Engineering in Industry

Invited Presentations
Geometric Modeling in CAD/CAM Systems: State-of-the-Art and Future Trends, 
State Key Laboratory of CAD/CG, Zhejiang University, China, October 1995. 

Recent Development of the STEP Standard and Its Application in Industry 
Surface Modeling in CAD/CAM Systems 
Dept of Computer Science and Engineering, Zhejiang University, China, October 1995.

Computer Aided Geometric Design: State-of-the-Art and Future Research Topics, 
Department of Applied Mathematics, Zhejiang University, China, October 1995. 



X. Ye, Construction and Verification of Smooth Free-Form Surfaces Generated by Compatible Interpolation of Arbitrary Meshes, Published by Koester Publishing Company, Berlin, Germany, 1994 (ISBN 3-929937-90-5).

Journal Publications

  1. X. Ye, Generating Bezier Points for Curves and Surfaces from Boundary Information, Computer Aided Design, Vol. 27, No. 12, pp. 875-885, December 1995.
  2. X. Ye, T. R. Jackson and N. M. Patrikalakis, Geometric Design of Functional Surfaces, Computer Aided Design, Vol. 28, No. 9, pp. 741-752, September, 1996.
  3. X. Ye, The Gaussian and Mean Curvature Criteria for Curvature Continuity between Surfaces, Computer Aided Geometric Design, Vol. 13, No. 6, pp. 549-567, August 1996.
  4. X. Ye, Y. Liang and H. Nowacki, Geometric Continuity between Adjacent Bezier Patches and Their Constructions, Computer Aided Geometric Design, Vol. 13, No. 6, pp. 521-548, August 1996.
  5. X. Ye and H. Nowacki, Ensuring G2-Compatibility of Surface Patches Around a Nodepoint, Computer Aided Geometric Design, Vol. 13, No. 9, pp 931-949, December 1996.
  6. X. Ye, Curvature Continuous Interpolation of Curve Meshes, Computer Aided Geometric Design, Vol. 14, No. 2, pp 169-190, Feburary 1997.
  7. X. Ye, H. Nowacki and N. M. Patrikalakis, GC1 Multisided Bezier Surfaces, Engineering with Computers, Vol. 13, No. 4, pp 222-234, 1997.
  8. X. Ye, Modeling Complex Stylistic Shapes by Lofting (Skinning) Contour Sections with Guide Curves, Technical Paper MS98-140, Society of Manufacturing Engineers, 1998.
  9. X. Ye, A Brief Introduction to SolidWorks, Computer Aided Drafting, Design and Manufacturing, Vol. 8, No. 1, June 1998, In Press.
  10. C.-Y. Hu, N. M. Patrikalakis and X. Ye, Robust Interval Solid Modeling: Part I, Representations, Computer Aided Design, Vol. 28, No. 10, pp. 807-817, October 1996.
  11. C.-Y. Hu, N. M. Patrikalakis and X. Ye, Robust Interval Solid Modeling: Part II, Boundary Evaluation, Computer Aided Design, Vol. 28, No. 10, pp. 819-830, October 1996.
  12. J. Zhou, N. M. Patrikalakis, S. T. Tuohy, and X. Ye, Fitting of 2-D and 3-D Surfaces with Simplex Splines, The Visual Computers, Vol. 13, No. 7, pp 295-310, 1997.
  13. C.-Y. Hu, T. Maekawa, N. M. Patrikalakis and X. Ye, Robust Interval Algorithm for Surface Intersections, Computer Aided Design, Vol. 29, No. 9, pp 617-627, September 1997.
  14. S. L. Abrams, W. Cho, C.-Y. Hu, T. Maekawa, E. C. Sherbrooke, N. M. Patrikalakis and X. Ye, Efficient and Reliable Methods for Rounded Interval Arithmetic, Computer Aided Design, 1998, In Press.
  15. Y. Liang and X. Ye, Geometric Continuity Between Curves and Its Applications, Math. Num. Sin. 11(4), 1989, pp 1-13, Alleton Press Inc., New York.
  16. X. Ye and Y. Liang, Geometric Continuity Conditions for Ajacent Bezier Surfaces (in Chinese), Chinese Annals of Mathematics 12(3), 1991, pp 316-324.
  17. Y. Liang and X. Ye, Geometric Continuity Between Curves (in Chinese), Chinese Journal of Numerical Mathematics and Applications 4, 1989, pp 394-404.

Conference Proceedings

  1. X. Ye and H. Nowacki, Optimally Tangent-Plane and Curvature Continuous Modification of Curves at a Common Nodepoint, in S. Azarm et al. (eds.) Advances in Design Automation 1995, Proceedings of the 1995 ASME Design Engineering Technical Conference, September 1995, ASME, pp 49-56.
  2. X. Ye and H. Nowacki, G1 Interpolation of Rectangular Unrestricted Cubic Curve Meshes Using Biquintic Bezier Patches, The Sixth IMA Conference on Mathematics of Surfaces, Brunel University, U.K., September 1994, in Mullineux, G. (ed.) Mathematics of Surfaces VI, Clarendon Press, Oxford, U.K., pp 429-451.
  3. H. Nowacki, J. Feng and X. Ye, A Synthesis Process for Fair Free-Form Surfaces, in Theory and Practice of Geometric Modeling II, University of Tuebingen, Germany, October 1996, Springer Verlag.
  4. Y. Liang, X. Ye and S. Fang, G1 Smoothing Solid Objects by Bicubic Bezier Patches, in D. A. Duce & P. Jancene (Eds) Eurographics'88, North-Holland Publishing Company, Netherlands, 1988, pp 343-355.
  5. Y. Cai, Y. P. Wang, X. Ye, Y. T. Ooi, C. K. Chui, H. L. Lim and K. H. Mak, Parametrical Modeling Based Multi-Layered Approach for Design and Validation of Catheterization Devices, Proceedings of IASTED International Conference On Computer Graphics and Imaging, Halifax, Canada, June 1-3, 1998.
  6. X. Ye, Modeling Complex Stlistic Shapes by Lofting (Skinning) Contour Sections with Guide Curves, Proceedings of AUTOFACT'97 Conference, pp 1383-1396, November 3-6 1997, Detriot, Michigan: Society of Manufacturing Engineers.
  7. X. Ye, G1 Smooth Interpolation of Curve Meshes Using Rational Bezier Patches, Proceedings of the 4th International Conference on CAD and Graphics, Wuhan, China, October 1995, SPIE.
  8. X. Ye, M. A. Mosaad, S. L. Abrams, F. Fernandez-Gonzalez, and N. M. Patrikalakis, Marine Propulsor UoF of AP 226, ISO TC184/SC4/WG3 N335, October 1994.
  9. N. M. Patrikalakis, S. L. Abrams, W. Cho, C.-Y. Hu, T. Maekawa, E. C. Sherbrooke, X. Ye and J. Zhou, Towards Robust Geometric Modeling: 1995 Progress Report, in Proceedings of the 1996 NSF Design and Manufacturing Grantees Conference, University of New Mexico, Albuquerque, New Mexico. January 1996, pp. 155-156. Dearborn, Michigan: Society of Manufacturing Engineers, 1996.
  10. M. A. Mosaad, X. Ye, S. L. Abrams and N. M. Patrikalakis, Visualization and Information Modeling of Propeller Surface Roughness, in V. Androcec and J. Lovric (eds.) Proceedings of the VII Congress of the International Maritime Association of Mediterranean, IMAM'95, Dubrovnik, Croatia, April 1995, pp 673-684.
  11. X. Ye, Q. Peng Y. Liang, Local Modification of B-Spline Surfaces (in Chinese), Proceedings of the 1st Chinese National CG/CAD Conference, Hangzhou, China, May 1987.
  12. X. Ye and Y. Liang, Modeling Free-Form Surfaces Using Generalized Sweeping Technique (in Chinese), Proceedings of the 1st Chinese National CG/CAD Conference, Hangzhou, China, May 1987.
  13. X. Ye and Q. Peng, Reconstruction of 3D Objects from Their 2D Views Using Octree Encoding Technique (in Chinese), Proceedings of the 1st Chinese National CAD Conference, Chengdu, China, August 1985.

Major Reports and Memoranda

  1. X. Ye, M. A. Mosaad, S. L. Abrams, F. Fernandez-Gonzalez, and N. M. Patrikalakis, Towards the Development of a Application Protocol for Marine Propulsors, Design Laboratory Memorandum 94-9, Massachusetts Institute of Technology, October 1994, Revised, May 1995.
  2. X. Ye and T. Maekawa, Differential Geometry of Intersection Curves Between Two Surfaces, Design Laboratory Memorandum 98-3, Massachusetts Institute of Technology, May 1998.
  3. X. Ye, Geometric Hermite Patches for GC1 Interpolation of Cubic Curve Meshes, Design Laboratory Memorandum 95-26, Massachusetts Institute of Technology, July 1995.


Dr. Ye can be reached at:

Dr. Xiuzi Ye, SolidWorks Corporation, 150 Baker Avenue Ext., Concord, MA 01742, USA
Phone (508) 371-5044; Fax: (508) 371-7303; E-mail: xiuzi@solidworks.com

Dr. Xiuzi Ye, c/o Prof. Nicholas M. Patrikalakis
Massachusetts Institute of Technology, Design Laboratory, Room 5-428
77 Massachusetts Avenue, Cambridge, MA 02139-4307, USA.
E-mail: xiuzi@deslab.mit.edu
URL: http://deslab.mit.edu/DesignLab/people/Xiuzi.html