Abstract: A method and apparatus for grinding spheres of ceramic material, including the spheres with at least one grinding wheel containing abrasive grains bound in a synthetic resin. The abrasive grains comprise more than 50% diamond and less than 5%, Cr2O3.

Abstract: A method and apparatus for grinding spheres of ceramic material, including the spheres with at least one grinding wheel containing abrasive grains bound in a synthetic resin. The abrasive grains comprise more than 50% diamond and less than 5%, Cr2O3.

Abstract: A method for automatically recognizing one or more structures in digitized image date includes determining sub-jets of the image graph at the nodes defined by its structure. The sub-jets correspond to at least part of the determined sub-jets of the specific reference graph. The projection of the net-like structure of the specific reference varies until a graph comparison function, which compares the jets of the image graph with the corresponding jets of the specific graph, becomes optimal. The structure is associated with a reference image corresponding to the reference graph for which the graph comparison function is optimal, with respect to the optimal image graph determined for the reference graph.

Abstract: The invention provides an apparatus, and related method, for providing a procedure to analyze images based on two-dimensional shape primitives. In the procedure, an object representation is created automatically from an image and then this representation is applied to another image for the purpose of object recognition. The features used for the representation are the two type of two-dimensional shape primitives: local line segments and vertices. Furthermore, the creation of object representations is extended to sequences of images, which is especially needed for complex scenes in which, for example, the object is presented in front of a structured background.