Adaptive noise reduction filter for reconstructed images

Details Adaptive noise reduction filter for reconstructed images Adaptive noise reduction filter for reconstructed images

1987-02-27

1988-08-02

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 6, 358111, G06K 940

Patent

active

047618191

ABSTRACT:
An MRI or other scanner (A) generates medical diagnostic data d(x,y) which has a Gaussian noise distribution for reconstruction by an imager (B) into an electronic image representation P(i,j) which may have a Gaussian or Rayleigh noise distribution. An image improving circuit (C) replaces each image pixel value P(i,j) from an image reconstruction means (32) with an improved pixel value P*(i,j) defined as follows:

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