Method of and apparatus for making video images

Details Method of and apparatus for making video images Method of and apparatus for making video images

1985-10-10

1987-03-24

Lev, Robert G.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 54, 358211, 358909, 358213, H04N 336

Patent

active

046529292

ABSTRACT:
A method of producing a video picture of an image comprises the steps of lighting the image at a light level equal to about a predetermined small fraction of the light level necessary to produce picture-element signals of an amplitude sufficient to process. The thus lighted image is then scanned and electrooptically reduced to a succession of sets of analog picture-element signals a predetermined number N of times, the number N being equal to the inverse of the predetermined small fraction. Thus for each portion of the image there is a respective picture-element signal in each succession. The signals of each image portion are then projected onto the same portion of a light-sensitive medium to form a picture of the image thereon. This medium is capable of adding each of the signals of each set to the signals of the other sets corresponding to the same image portion.

REFERENCES:
patent: 4420773 (1983-12-01), Toyoda et al.
patent: 4489351 (1984-12-01), D'Alayer de Costomore d'Arc
patent: 4503466 (1985-03-01), Ryan
"Improving Low Illumination Video", p. 18, NASA Technical Briefs, vol. 4, No. 1, Spring 1979.

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