Photographic image-processing method

Details Photographic image-processing method Photographic image-processing method

1982-10-20

1984-04-03

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Radiation modifying product or process of making

430 5, 430139, 430152, 430290, 430396, 430494, G03F 900

Patent

active

044408404

ABSTRACT:
A photographic image-processing method which is capable of obtaining, from negative and positive films having an image whose density is in continuous gradation, a linear image representing the contour of that image. This method comprises the step of sandwiching a light scattering film between the negative and positive films in registration, thereby making a mask, and exposing a photographic paper to light at a right angle by way of the mask which is placed on the photographic paper, with a result that the light which passes through the light transmissive portion of the negative film is subjected to course alteration by the scattering film is order to pass through the light transmissive portion of the positive film, with a result that a linear contour image of the original image is formed on the photographic paper.

REFERENCES:
patent: 2331492 (1943-10-01), Michaclis
patent: 2543706 (1951-02-01), Pohl
patent: 3667948 (1972-06-01), Merriam
patent: 3775119 (1973-11-01), Bemis
patent: 4241153 (1980-12-01), Rovnjev
patent: 4321321 (1982-03-01), Moore

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