Accession Number : ADD011816

Title :   Spatial Frequency Multiplexed Coherent Optical Processor for Calculating Generalized Moments.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Blodgett,J A ; Szu,H H ; Giles,C L ; Athale,R

Report Date : 19 Mar 1985

Pagination or Media Count : 6

Abstract : An optical processor that can compute the moments of a two-dimensional image in parallel. The image is placed at the plane of a holographic mask which is diposed in the front focal plane of a Fourier-transforming lens and each of the desired moments is found at a respective one of a plurality of photodetectors arrayed in the back focal plane of the lens. (Author)

Descriptors :   *PATENTS, *OPTICAL PROCESSING, *PATTERN RECOGNITION, *IMAGE PROCESSING, FOCAL PLANES, HOLOGRAPHY, LASER BEAMS, MASKS, FOURIER TRANSFORMATION, COMPUTER APPLICATIONS, TWO DIMENSIONAL, FREQUENCY, SPATIAL DISTRIBUTION, PHOTODETECTORS, ARRAYS, IMAGES, LENSES, GENERATORS, MOMENTS

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE