RESEARCH
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Dr. Piegl’s research interests belong to the general areas of computer assisted design, engineering and applied computing, and software engineering. He has done basic and applied research in a variety of fields including fundamental graphics algorithms, curve and surface modeling, geometry processing for solid modeling and manufacturing, surface and volume triangulations, terrain modeling, genetic algorithms, reverse engineering, and NURBS. He is the co-developer of Nlib, a geometry kernel that contains basic and advanced construction algorithms for various applications ranging from CAD to entertainment.
PAST RESEARCH PROJECTS
Current research interests are in two tracks: (1) shape modeling, and (2) intelligent computing. In the shape modeling area research topics include NURBS volumes, bioengineering, CAD data exchange and NURBS R&D. In intelligent computing we deal with issues like knowledge-guided computation, fault tolerant design, biologically inspired system development, humanizing computing, human factors in CAD, and design by example, learning and evolution. Another area of side interest is virtual enterprise modeling, e.g. virtual courses, departments or even universities.
CURRENT RESEARCH INTERESTS
- Fault-tolerant computing in a knowledge-guided NURBS environment, Computer-Aided Design and Applications, Vol. 6, No. 6, 2009, 809-823.
- Curve interpolation with directional constraints for engineering design, Engineering with Computers, Vol. 24, 2008, 79-85.
- Ten challenges in Computer-Aided Design, Computer-Aided Design, 37(4), 2005, 461-470.
- Surface fitting to random data via constrained shaping, International Journal of Shape Modeling, 9(1), 2003, 1-20.
- The NURBS Book, Second Revised Edition, Springer-Verlag, 1997.
REPRESENTATIVE PUBLICATIONS
Copyright ©  Les A. Piegl. All rights reserved.
NURBS theory & practice with applications in geo-
metric computing.
Fundamentals of geo-
metric modeling as developed by the many pioneers.
Applications of subtle energies in science & in the healing arts.