Geometrical deviation is an important factor in determining the quality of a three-dimensional
(3D) Surface. For 3D surfaces with complex shapes, the high-definition measurement (HDM) …

Shape interrogation is the process of extraction of information from a geometric model. It is a
fundamental component of Computer Aided Design and Manufacturing (CAD/CAM) …

Local and global evaluation methods for shape errors of free-form surfaces are presented.
The local evaluation methods use the changes of principal curvatures between the original …

We present an open-source, extensible software which assists in the development of CAD
geometric algorithms based on Boundary Representation data structures. The software is …

The design of a new car is guided by a set of directives indicating the target market, specific
engineering, and aesthetic constraints, which may also include the preservation of the …

The goal of this paper is to discuss the key issues in the computer-aided surface modeling
tools used in the industrial aesthetic design workflow and to highlight the problems that still …

Surface interrogation is of central importance for CAD and Computer Graphics applications.
Wherever free form surfaces are used, they often need to be analyzed with respect to …

The main work of this paper is to investigate two kinds of generalized focal surfaces and two
kinds of evolutes generated by spacelike curve γ lying in lightlike surfaces in Minkowski …

As the aesthetic aspect of a product is becoming more and more important in customers'
decisions, there is an increasing need of tools able to express and preserve the styling intent …

A method to compute curvature minima and maxima of parametric curves (represented in
NURBS format) is presented in this paper. Since the curvature changes vary rapidly along …