SOME ASPECTS OF THE TANGENT-ANGLE VS. ARC LENGTH REPRESENTATION OF CONTOURS

摘要: Abstract : A technique is described for characterizing arbitrary, simply connected plane figures by a set of numbers derived from the shape their outlines. The basis description taken to be slope contour as function distance along contour. This expanded in Fourier series, and series coefficients are descriptors. Topics discussed effects distortion approximation contours, reconstruction descriptors, application descriptors pattern recognition. Alternates expansion also considered.