Accession Number : AD0758895

Title :   Identification of Three-Dimensional Objects Using Fourier Descriptors of the Boundary Curve,

Corporate Author : OHIO STATE UNIV COLUMBUS DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Richard,C. W. , Jr. ; Hemami,H.

Report Date : AUG 1972

Pagination or Media Count : 14

Abstract : The paper demonstrates the feasibility of a method for identification of a three-dimensional object from information contained in the boundary of its silhouettes. A silhouette is characterized by parametric representation of its boundary curve in the complex plane. After normalization and transformation, a set of Fourier descriptors is derived for every silhouette. A minimum distance classifier uses the descriptors to identify the three-dimensional object and to estimate its position and attitude with respect to a known reference coordinate system. The method was tested for identification of four aircraft representing complex and non-convex objects. Simulation results, quantitative and statistical, are presented. (Author)

Descriptors :   (*PATTERN RECOGNITION, FOURIER ANALYSIS), (*AIRCRAFT, IDENTIFICATION SYSTEMS), TARGET DISCRIMINATION, POWER SERIES, COMPLEX NUMBERS, INTEGRAL TRANSFORMS, NOISE, MATHEMATICAL MODELS

Subject Categories : Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE