Image analysis – Histogram processing – For setting a threshold
Patent
1992-03-24
1994-09-06
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
36441313, 382 18, 382 51, G06K 900
Patent
active
053455134
ABSTRACT:
The present invention relates to a method for processing an image corresponding to a radiographic pattern, the image being formed of a plurality of pixels each having a value corresponding to density. The method includes the steps of obtaining an image corresponding to a radiographic pattern so that values of pixels forming the image are stored in a memory; dividing the image into a plurality of image regions based on the values of the pixels forming the image, each image region including pixels each of which has a value falling within a predetermined range; and applying an image processing to the plurality of image regions of the image, processing conditions used for the plurality of image regions in the image processing differing from each other.
REFERENCES:
patent: 3859527 (1975-01-01), Luckey
patent: 4310886 (1982-01-01), Kato et al.
patent: 4887305 (1989-12-01), Shimura
patent: 4950894 (1990-08-01), Hara et al.
patent: 4955067 (1990-09-01), Shimura
Patent Abstracts of Japan, Unexamined Applications, P Field, vol. 11, No. 62, Feb. 25, 1987, The Patent Office Japanese Government, p. 60, P 551 No. 61-225 640 (Toshiba).
Abe Katsumi
Haraki Takahiro
Hirano Hideyuki
Ishiwata Kenji
Katsuragawa Shigehiko
Boudreau Leo H.
Fujitsu Limited
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