Abstract: "Automatic extraction of CAD descriptions which are ultimately intended for human manipulation requires the accurate inference of geometric and topological information. We present a system which applies segmentation techniques from computer vision to automatically extract CAD models f...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Fitzgibbon, Andrew W. (VerfasserIn), Eggert, David W. (VerfasserIn), Fisher, Robert B. (VerfasserIn)
Format:	Buch
Sprache:	English
Veröffentlicht:	Edinburgh 1995
Schriftenreihe:	University <Edinburgh> / Department of Artificial Intelligence: DAI research paper 775
Schlagworte:	Datenverarbeitung Computer-aided design Image processing Reverse engineering > Data processing Surfaces (Technology)
Zusammenfassung:	Abstract: "Automatic extraction of CAD descriptions which are ultimately intended for human manipulation requires the accurate inference of geometric and topological information. We present a system which applies segmentation techniques from computer vision to automatically extract CAD models from range images of parts with curved surfaces. The output of the system is a B-rep of the object which is suitable for further manipulation in a modelling system. The segmentation process is an improvement upon Besl and Jain's variable-order surface fitting, extracting general quadric surfaces and planes from the data, with a postprocessing stage to identify surface intersections and to extract a B- rep from the segmented image. We present results on a variety of machined objects, which illustrate the high-level nature of the acquired models, and discuss the numerical accuracy (feature sizes and separations) and the correctness of structural inferences of the system."
Beschreibung:	16 S.