Technical Operations, Incorporated

George B Parrent, Jr

Philip S Considine

Kenneth L Bernstein

John H Ward

The specification discloses an optical technique for retrieving images of geometric shapes from a cluttered background in a photographic record by means of amplitude and phase filters configured according to the particular shape sought to be retrieved. A Fourier transform of the record is filtered with filters of both types and light representing the desired shape, if present, is brought to a focus in an image plane.

Optical detection of geometric configurations

This disclosure depicts an optical system and method for encoded storage and retrieval, wherein record images are enciphered using incoherent light and wherein deciphering of the coded images is performed in coherent light. More particularly, the disclosure depicts encoding images by inserting a complex phase function in the Fourier transform plane of the imaging means which satisfies the relation:

Growing community of inventors

Carlisle, MA, United States of America

George B Parrent, Jr