Accession Number : ADD013985

Title :   Optical Gaussian Convolvers.

Descriptive Note : Patent, Filed 3 Jun 86, patented 7 Jun 88,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Sage, Jay P

Report Date : 07 Jun 1988

Pagination or Media Count : 6

Abstract : The variable Gaussian convolution of an optical image is performed using a transparency, a focusing lens, a TV camera and a mechanism which moves the camera. The transparency has pattern inscribed on it which diffracts the light of the image with a Gaussian function of radius. The focusing lens receives the diffracted image from the transparency and focuses it. The camera receives the Gaussian convolution of the optical image from the focusing lens by by being initially positioned along the optical axis of the lens at the focal length of the lens. AS the camera is shifted to variable positions by the mechanism, the size of the Gaussian function increases as the camera is moved towards the lens, and is decreased as the camera is moved away from the lens. Patent. (JHD)

Descriptors :   *PATENTS, *CONVOLUTION INTEGRALS, *OPTICAL PROCESSING, *DIFFRACTION ANALYSIS, DIFFRACTION, FOCUSING, LENGTH, LENSES, LIGHT, OPTICAL IMAGES, OPTICAL PROPERTIES, TELEVISION CAMERAS, GAUSSIAN QUADRATURE, IMAGE PROCESSING

Subject Categories : Optics
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE