title: Spatial self-filtering with polarizer sheets.
abstract: A method for phase visualization and edge enhancement by spatial self-filtering by use of a polarizer sheet in the Fourier plane of an optical processor is described. Light absorbed by the polarizer sheet induces a thermal lens, which, in turn, produces selective action on certain spatial frequencies of the image to be processed. Some experiments that demonstrate the self-filtering action of the proposed system are presented.
authors.affiliation: Instituto de Fisica, Facultad de Ingeniería, J Herrera y Reissig 565, 11300 Montevideo, Uruguay. jferrari@fing.edu.uy
authors.forename: José A
authors.initials: JA
authors.lastname: Ferrari
authors.forename: Eugenio
authors.initials: E
authors.lastname: Garbusi
authors.forename: Erna M
authors.initials: EM
authors.lastname: Frins
authors.forename: Gustavo
authors.initials: G
authors.lastname: Píriz