Frequency processing method and apparatus for radiation image

Details Frequency processing method and apparatus for radiation image Frequency processing method and apparatus for radiation image

1988-07-05

1989-07-04

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

358111, 36441323, 2503272, 382 54, G06K 900

Patent

active

048457620

ABSTRACT:
In a radiation image recording and reproducing system, an image signal obtained by forming a radiation image by a radiation passing through an object and photoelectrically detecting the radiation image is subjected to frequency processing by use of a predetermined degree of enhancement. The degree of enhancement is corrected in accordance with the radiation exposure dose so that the degree of enhancement is decreased as the exposure dose decreases, thereby improving the image quality of a reproduced visible image.

REFERENCES:
patent: 4315318 (1982-02-01), Kato et al.
patent: 4346409 (1982-08-01), Ishida et al.
patent: 4527061 (1985-07-01), Horikawa et al.
patent: 4611247 (1986-09-01), Ishida et al.

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