This paper introduces new techniques for interactive piecewise at-tening of parametric3-D surfaces, leading to a non-distorted,hence realistic, texture mapping. Cuts are allowed on the mapped texture and we make a compromise between discontinuities and distortions. These techniques are based on results from diierential geometry, more precisely on the notion of \geodesic curvature": isoparametri...

Functional design is a process includes function understanding, function recognition, function representation, function modeling and functionto-structure mapping. The effect in TRIZ is extended by multi-pole effect model and effect chain modes, and then the functions and flows in TRIZ are reclassified. The combinative relationships among functions are discussed, and the function modeling based ...

This paper presents two computer-aided techniques for discovering formal specification behavioral requirements and for mapping components and methods within an implementation to their driving requirements. The first technique is an informal technique while the second technique is formal. The first technique uses a system reference model (SRM) abstraction and a set of existing formal specificati...

The depiction and navigation of large-scale urban landscapes are limited by the great cost of traditional computer-aided design (CAD) models for large urban environment in terms of both the labor of data entry and the runtime computational expense. This article presents a hybrid modeling approach that enables rapid urban model production from legacy spatial data. Our scheme fills the gap betwee...

In this paper, the authors show the benefits of using a concept mapping tool for gathering the domain knowledge in the computer-aided learning area. Concretely, we show how CM-ED is used integrated in the IRIS Intelligent Tutoring System authoring tool. First, the paper describes the structure of the domain knowledge in IRIS. Then, the main characteristics of CM-ED are listed. Finally, the new ...

The problem of parametrizing 3D data points is fundamental for many applications in computer-aided geometric design, e.g. surface fitting, texture mapping, and remeshing. We present a new method for constructing a global parametrization of a triangulated (topologically disklike) surface over a planar region with minimal distortion. In contrast to many existing approaches which need the boundary...