Method for determining desired image signal ranges and method fo

Details Method for determining desired image signal ranges and method fo Method for determining desired image signal ranges and method fo

1989-09-19

1990-12-11

Smith, Jerry

Boots, shoes, and leggings

2503272, 2504841, 382 6, 382 22, G01N 2304

Patent

active

049775049

ABSTRACT:
A method of determining a desired image signal range comprises the steps of carrying out differentiation processing on image signal components to positions located along each of a plurality of lines on a recording medium having a radiation image recorded thereon, which lines include lines extending across an image part corresponding to a radiation blocking material. Absolute values are found from the values resulting from the differential processing of the image signal components, which absolute values exceed a threshold value. The area of the recording medium is divided into a plurality of small blocks, and processing of the image signal is conducted on the basis of the small blocks.

REFERENCES:
patent: 4258264 (1981-03-01), Kotera et al.
patent: 4527060 (1985-07-01), Suzuki et al.
patent: 4804841 (1989-02-01), Nakajima et al.
patent: 4804842 (1989-02-01), Nakajima
patent: 4806756 (1989-02-01), Nakajima
patent: 4806759 (1989-02-01), Funahashi

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