Stable matching between a hand structure and an object silhouette

A method is proposed which determines the possible ways to grasp an object, defined by its silhouette. This method is quite general and versatile: the geometry of the object is arbitrary and a large class of grippers is allowed; no a priori information is needed, except the parameters of the gripper, and so the method applies, in particular, to all the automatic prehension problems when the object and/or its orientation are unknown. Suitable segmentation and parametrization of the silhouette yields an explicit solution and a very fast and simple algorithm.