title: The asymptotic optimal frequency domain filter for edge detection.
abstract: In an earlier paper by Shanmugam, Dickey, and Green, an edge detection filter was derived which maximized the energy within a specified interval about an edge feature. The initial expression of this filter involved a prolate spheroidal wave function. However, a careful analysis of the application of an asymptotic approximation to this function uncovered a major dimensional error. The corrected derivation of the asymptotic optimal filter forms the subject of this paper. To verify the results, the filter found is compared to a similar filter developed independently by Marr and Hildreth.
authors.affiliation: Departrment of Electrical Engineering, University of British Columbia, Vancouver, B.C., Canada V6T 1Z2.
authors.forename: W H
authors.initials: WH
authors.lastname: Lunscher