Transformation of image-signal-dependent noise into image-signal-independent noise
- 1 July 1981
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 6 (7) , 316-318
- https://doi.org/10.1364/ol.6.000316
Abstract
A point transformation, the normalizing transform, is presented, which, when applied to a measured noisy image, renders its noise signal independent. The transform is suitable for arbitary noise-to-signal dependence. We demonstrate its applicability and its limitations by using, as an example, noisy signals that belong to a family of gamma-distributed random variables with power-law variance-to-mean dependence. Its normalizing and variance-stabilizing properties are studied.Keywords
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