Accession Number : ADA109564
Title : Edge Evaluation Using Local Edge Coherence
Descriptive Note : Technical rept.
Corporate Author : MARYLAND UNIV COLLEGE PARK COMPUTER SCIENCE CENTER
Personal Author(s) : Kitchen, Les ; Rosenfeld, Azriel
Report Date : Dec 1980
Pagination or Media Count : 46
Abstract : A method of evaluating edge detector output is proposed, based on the local good form of the detected edges. It combines two desirable qualities of well-formed edges -- good continuation and thinness. The measure has the expected behavior for known input edges as a function of their blur and noise. It yields results generally similar to those obtained with measures based on discrepancy of the detected edges from their known ideal positions, but it has the advantage of not requiring ideal positions to be known. It can be used as an aid to threshold selection in edge detection (pick the threshold that maximized the measure), as a basis for comparing the performances of different detectors, and as a measure of the effectiveness of various types of preprocessing operations in facilitating edge detection.
Descriptors : *IMAGE PROCESSING , *PATTERN RECOGNITION , BRIGHTNESS , DETECTORS , EDGES , TARGET CLASSIFICATION , THRESHOLD EFFECTS , VISUAL PERCEPTION
Subject Categories : Human Factors Engineering & Man Machine System
Distribution Statement : APPROVED FOR PUBLIC RELEASE