Boots – shoes – and leggings
Patent
1980-07-11
1983-07-19
Smith, Alfred E.
Boots, shoes, and leggings
378 62, 378 98, 378174, 2503272, G06F 1542
Patent
active
043947379
ABSTRACT:
In radiography, a plurality of radiographic films are used for recording radiographic images of an object viewed from the same direction. For instance, a stack of radiographic films stacked together with intensifying screens is exposed to X-rays passing through an object to record the images on the films simultaneously. Alternatively, the plurality of radiographic films are exposed to X-rays passing through the object one by one with the object held still at a position. The images on the plurality of radiographic films are superposed together by electrical signal processing means to obtain an image having averaged density. Then, the gradient of the gradation of the averaged image is enhanced. The radiographic films may be stacked together with self-supporting intensifying screens to reduce the thickness of the stack of the films and intensifying screens when recording the radiographic images. Further, double-side coated intensifying screens may be used together with the stack of the films to reduce the thickness of the stack of the films and intensifying screens when recording the radiographic images.
REFERENCES:
patent: 1609703 (1926-12-01), Eggert
patent: 3988602 (1976-10-01), Gorsica, Jr.
patent: 4216526 (1980-08-01), Karwowski
patent: 4276473 (1981-06-01), Kato et al.
"Improving Low-Illumination Video", NASA Tech. Briefs, Spring, 1979, p. 18.
Komaki Takao
Matsumoto Seiji
Baker Joseph J.
Ferguson Jr. Gerald J.
Field Carolyn E.
Fuji Photo Film Co. , Ltd.
Smith Alfred E.
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