Résumé: Most existing techniques in feature recognition are limited to the recognition of ` regular a shape features such as hole, slot, pocket, etc. which are commonly used in mechanical CAD/CAM applications. This research tackles the problem of free-from features recognition. Free-from features are not only important in engineering and industrial design, but also in computer graphics application. A free-from feature is embedded within a single or a set of free-form surfaces. Its boundary is not clearly de"ned and thus the recognition process is more di

Langue: Anglais