Accession Number : AD0749495

Title :   Electronic Color Encoding of Image Information.

Descriptive Note : Final technical rept. Apr 71-May 72,

Corporate Author : RCA ADVANCED TECHNOLOGY LABS CAMDEN N J

Personal Author(s) : Corsover,S. L.

Report Date : AUG 1972

Pagination or Media Count : 89

Abstract : An experimental and theoretical study was conducted to demonstrate the practicality of encoding multispectral signals derived from real imagery on a single piece of black and white film. Three video signals representing the primary colors were used to amplitude modulate three carrier frequencies chosen such that they form diffraction gratings with separable Fourier transforms. The three modulated carriers were then electronically added and used to modulate a laser beam which was recorded on black and white film. The encoded film transparency was then reconstructed in full color using an optical playback system. The use of phase gratings was also investigated and it was determined that phase gratings would allow rapid and inexpensive replication of encoded imagery for interpretation by multiple users. Testing was performed in the areas of achievable resolution, system transfer function, gamma tolerance, system crosstalk, and the use of phase gratings. (Author)

Descriptors :   (*PHOTOGRAPHIC IMAGES, DATA PROCESSING), MULTIBAND SPECTRAL RECONNAISSANCE, PHOTOGRAPHIC PROCESSORS, COLORS, CODING, LASERS, MODULATION

Subject Categories : Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE