Abstract

A simple technique of pseudocolor density encoding of photographic image by white-light processing is described. Spatial encodings are made through positive and negative photographic-image transparencies, and the pseudocoloring is obtained by color filtering of the smeared Fourier spectra. The technique is simple, versatile, and economical to operate. Since coherent sources are not used, annoying coherent artifact noise can be eliminated. Spatial color encoding uses the entire Fourier spectrum; therefore, this technique offers no apparent resolution loss. Simple experimental demonstrations of this technique are provided.

© 1980 Optical Society of America

Real-time white light spatial frequency and density pseudocolor encoder

F. T. S. Yu, S. L. Zhuang, T. H. Chao, and M. S. Dymek
Appl. Opt. 19(17) 2986-2990 (1980)

White-light pseudocolor density encoder

Anthony Tai, F. T. S. Yu, and Hsuan Chen
Opt. Lett. 3(5) 190-192 (1978)

White light processing technique for archival storage of color films

F. T. S. Yu
Appl. Opt. 19(14) 2457-2460 (1980)

New technique of pseudocolor encoding of holographic imaging

F. T. S. Yu
Opt. Lett. 3(2) 57-59 (1978)

Smeared-photographic-image deblurring utilizing white-light-processing technique

S. L. Zhuang, T. H. Chao, and F. T. S. Yu
Opt. Lett. 6(2) 102-104 (1981)