Spatial self-filtering with polarizer sheets.
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.
Ferrari
José A
JA
Instituto de Fisica, Facultad de Ingeniería, J Herrera y Reissig 565, 11300 Montevideo, Uruguay. jferrari@fing.edu.uy
Garbusi
Eugenio
E
Frins
Erna M
EM
Píriz
Gustavo
G