Patent ID: 6256403
Filing Date: 2001-07-03
Classification: G06T

Abstract:
An image processing method for determining a noise curve (NC) relating to an image, comprising:acquisition of an image (J.sub.0) which is formed by pixels having an intensity which includes a signal component and a noise component which is dependent on the signal component,cutting intensity levels of the image into bands (QMk) with substantially uniform intensity levels (Mk),determination of a plurality of statistical rules (f) which link distributions (Hk) of standard noise deviations to levels (QSk) of the standard noise deviation in said bands (QMk),determination, on the basis of the statistical rules (f), of a plurality of standard noise deviations (SBk) as a function of substantially uniform intensity levels (Mk) of the image, anddetermination of the noise curve (NC) as a statistical rule (g) of the variations of the standard noise deviations (SBk) as a function of said intensity levels (Mk) of the image.