Real-time analytic pseudocolor encoder system

Details Real-time analytic pseudocolor encoder system Real-time analytic pseudocolor encoder system

1991-10-30

1993-01-26

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

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358 82, H04N 943

Patent

active

051826399

ABSTRACT:
Continuous analytic transform functions implemented optically in U.S. Pat. No. 4,623,245 are instead implemented electronically and in real-time. An improved scheme is disclosed where the range of amplitudes of the monochromatic signal input is divided into n sections and constant, linear or sinusoidal transform functions are utilized in each section for transforming the monochromatic video input to three pseudocolor video signals. Even complex transform functions can be implemented by simple transform functions in each of the sections to reduce the overall complexity of the implementing circuit. The television camera, a pseudocolor encoder and a liquid crystal television monitor are placed within the same housing to form a portable hand-held unit. The weight and size of the unit can be reduced as a result of the simple electronic implementation of the encoder.

REFERENCES:
patent: 3647942 (1972-03-01), Siegel
patent: 4608596 (1986-08-01), Williams et al.
patent: 4623245 (1986-11-01), Yu
patent: 4690150 (1987-09-01), Mayo, Jr.
patent: 4760537 (1988-07-01), Martin et al.
patent: 5041911 (1991-08-01), Moorman
patent: 5051821 (1991-09-01), Vittot
"Real-Time Pseudocolor Encoding Using a Low-Cost . . . ," by Yu et al., Optics and Laser Techn., vol. 19, No. 1, pp. 45-47 (Feb. 1 1987).
"Gray Level Pseudocolor Encoding Using a Liquid Crystal Television," by Yu et al., J. Optics, vol. 19, No. 3, pp. 129-133 (1988).
"Digital Image Processing with Pseudo-Color," by Radewan et al., pp. 50-56.
"A New Coherent Optical Pseudo-Color Encoder," by Liu et al., Nouv. Rev. Optique, t. 7, No. 5, pp. 285-289 (1976).
"Aus Schwarzweib wird Farbe," Videodigitalisierer und Falschfarbengenerator, Funkschau, 1987.

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