System for automated transformation of gray level of image

Details System for automated transformation of gray level of image System for automated transformation of gray level of image

1991-01-09

1992-09-22

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 51, G06K 936

Patent

active

051504219

ABSTRACT:
Disclosed is an automated image gray level transformation system applied to a medical image processing work station for the purpose of dispensing with the prior art manual complex processing thereby improving the accuracy of diagnosis. The system carries out, in addition to its fundamental step of equalizing a histogram of image data of an input image, the steps of suppressing an adverse effect of a background region of the image so as to obtaining an intensity transformation function, constraining the intensity transformation function and modifying a bias value used for the function constraining.

REFERENCES:
patent: 4792979 (1988-12-01), Nomura et al.
A. Rosenfeld et al. "Digital Picture Processing" Academic Press, 1976, pp. 172-177.

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