Reconstruction of images and recognition of polyhedral objects

Abstract

An indirect way of reconstructing the coordinates of points on the surface of a 3D object by its pla nar parallel projections is proposed. The approach is based on the substitution of the object by another (vir tual) object, for which this operation can be carried out simply, whereas the correctness of the obtained results is controlled. The specificities of obtaining a mathematical model of reconstructed objects with a polyhedral shape, the issues of normalization of the angular discrepancies between the recognized and the etalon objects, and the solution of the problem of their recognition based on the introduced model are considered.Keywords: parallel projection of the object, image of the shadow of the object, reconstruction of coordinates of the object points, reconstruction of the image of polyhedron, recognition of the image of polyhedron, the wire model of convex polyhedron, contour analysis, correction of the rotation angle.