Title :
New optical transforms for pattern recognition
Author :
Casasent, David ; Psaltis, Demetri
Author_Institution :
Carnegie-Mellon University, Pittsburgh, PA
Abstract :
New optical transformations are discussed. These include Mellin transforms, Fourier-Mellin transforms, and combinations of Geometrical transformations and Fourier-Mellin operations. Scale, postional, and rotational invariant correlations with no loss in SNR are demonstrated.
Keywords :
Fourier transforms; Geometrical optics; Lenses; Matched filters; Optical computing; Optical feedback; Optical filters; Optical losses; Pattern recognition; Spatial filters;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1977.10432
