Accession Number : AD0701778

Title :   PATTERN WIDTH AT A GIVEN ANGLE,

Corporate Author : HAWAII UNIV HONOLULU DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Klinger,Allen

Report Date : OCT 1969

Pagination or Media Count : 27

Abstract : The paper demonstrates that the pattern feature 'width as a function of angle' possesses several possible interpretations. The paper is a review discussing the width concept in pattern recognition and the geometrical concept itself. The object of the work is to clarify how the word description can be made precise so that computer algorithms for feature extraction may be obtained; the focus is on theoretical subject matter. The results consist of a set-theoretic definition of width-at-angle, a theorem relating it to the pattern boundary radius vector, and a description of two alternate widths. All three widths are calculated for an illustrative example; graphical and tabular comparisons are given. Substantial variation in width-at-angle magnitude is found. The principal conclusion is that the set-theoretic width-at-angle is a useful pattern feature when it can be easily computed. Further investigation of the information contained in only part of a width function is recommended for cases where computation of width-at-angle is difficult. (Author)

Descriptors :   (*CHROMOSOMES, PATTERN RECOGNITION), (*PATTERN RECOGNITION, ALGORITHMS), SET THEORY, GEOMETRIC FORMS, COMPUTER PROGRAMMING, CHARACTER RECOGNITION, GENETICS

Subject Categories : Computer Programming and Software
      Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE