期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2005
卷号：XXXVI-3/W24
出版社：Copernicus Publications
摘要：When complex scenes are modelled using measured data, such as mass data from laser scanners, the objects generated do not only have to fit the data, but also have to fulfill additional constraints, like incidence, distance, or angle relations. Weak primitives have been proposed as a means to automatically introduce larger numbers of constraints into the modelling process. In this article, several aspects of constraint modelling are discussed, in particular constraint graphs and maximum matchings, polynomial constraints and Gr " obner bases, and linearization. The application to the problem of interactively modifying constrained geometries is shown
关键词：Weak primitives; constraint equation systems; constraint graphs; Gr "obner bases
