Abstract

A pattern recognition system has recently been described,⁽¹⁾ in which images are represented by a hierarchical sequence of patterns of decreasing size, forming a type of pyramid structure (similar in some respects to resolution pyramids). Pattern recognition occurs by comparison of sub-patterns of images in each level with array patterns stored in a memory associated with each level. In these comparisons, a matching criterion determines, at each level, the degree to which the patterns being compared must match in order to be considered equivalent. The purpose of this report is to present some results on how the matching criteria affect the performance of this type of system.

© 1987 Optical Society of America