title: Optical symbolic substitution: edge detection using Prewitt, Sobel, and Roberts operators.
abstract: Edge detection schemes based on Prewitt, Sobel, and Roberts operators are realized using optical symbolic substitution. The corresponding optical systems are compared in terms of hardware and performance.
authors.forename: A K
authors.initials: AK
authors.lastname: Cherri
authors.forename: M A
authors.initials: MA
authors.lastname: Karim