X-ray image-processing apparatus utilizing grayscale transformat

Details X-ray image-processing apparatus utilizing grayscale transformat X-ray image-processing apparatus utilizing grayscale transformat

1986-11-21

1989-01-31

Smith, Jerry

Boots, shoes, and leggings

378 99, 358111, 382 6, 382 54, A61B 600, G01N 2304, G06F 1542

Patent

active

048020931

ABSTRACT:
An X-ray image-processing apparatus includes a subtraction circuit for performing subtraction between a mask image and a contrast image, and a grayscale-transforming circuit for transforming the grayscales of the mask image, based upon the grayscales of the contrast image, so as to reduce the difference in the grayscales between these images. This grayscale transformation is performed before the subtraction processing.

REFERENCES:
patent: 4322797 (1982-03-01), Lickel
patent: 4430749 (1984-02-01), Schardt
patent: 4491866 (1985-01-01), Verhoeven
patent: 4504908 (1985-03-01), Riederer
patent: 4546255 (1985-10-01), Knoll

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