Automatic tone scale adjustment using image activity measures

Details Automatic tone scale adjustment using image activity measures Automatic tone scale adjustment using image activity measures

1995-12-22

1997-05-27

Hannaher, Constantine

Radiant energy

Source with recording detector

Using a stimulable phosphor

382132, G03B 4202

Patent

active

056335113

ABSTRACT:
A method of automatically adjusting the tone scale adjustment for digital radiographic images. The method includes the steps of providing an input digital radiographic image; estimating the image noise as a function of code value of the image; determining the range of code values in the input image; determining which way the input image should be processed; determining a bounding box which contains the region of interest of the input image; computing the image activity histogram of the input image; determining four points from the image activity histogram; constructing the tone-scale curve for the input image; and mapping the input image through the tone-scale curve to produce an output image with good tone scale.

REFERENCES:
patent: 4302672 (1981-11-01), Kato et al.
patent: 4641267 (1987-02-01), Asai et al.
patent: 4731863 (1988-03-01), Sezan et al.
patent: 4859850 (1989-08-01), Funahashi et al.
patent: 4914295 (1990-04-01), Shimura et al.
patent: 4970393 (1990-11-01), Funahashi
patent: 5046118 (1991-09-01), Ajewole et al.
patent: 5164993 (1992-11-01), Capozzi et al.
patent: 5268967 (1993-12-01), Jang et al.
patent: 5343390 (1994-08-01), Doi et al.
patent: 5369572 (1994-11-01), Haraki et al.

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