Photocopying – Projection printing and copying cameras – With focusing or projection screen
Patent
1978-09-18
1981-04-21
Miller, Jr., George H.
Photocopying
Projection printing and copying cameras
With focusing or projection screen
355 71, 355 80, 355 67, 355 77, G03B 2772
Patent
active
042630010
ABSTRACT:
A method and apparatus used therein for modifying and enhancing the color, tonal range, highlight and shadow detail of an optical image, photograph, or photographic transparency in which the image to be enhanced is formed as a collection of small areas, called fields; the intensity and filtration of each field is independently adjustable for the purpose of achieving the desired enhancement of the image. In one embodiment, a photographic transparency is positioned in the front of a uniformly diffused light source. A video camera receives the image, transmitting it to a video tape recorder (or other device capable of single frame storage) through a special effects generator that can provide intensity and contrast control of the image, either positive or negative. The single frame is then displayed on a cathode ray tube (CRT) which has a diffuser positioned between it and the source transparency. The resultant modified, enhanced image is then photographed.
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patent: 3521954 (1970-07-01), French
patent: 3537788 (1970-11-01), Young
patent: 3555987 (1971-01-01), Browning
patent: 3772465 (1973-11-01), Vlahos et al.
patent: 3784736 (1974-01-01), Novak
patent: 4017680 (1977-04-01), Anderson et al.
patent: 4050814 (1977-09-01), McFadden
Brady W. J.
Miller Jr. George H.
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