Patent ID: 6771833
Filing Date: 2004-08-03
Classification: G06T

Abstract:
A method of enhancing a digital image comprising at least one image channel, comprising:transforming at least one spatial domain segment of a plurality of spatial domain segments of the at least one image channel from the spatial domain to the frequency domain to create at least one segment transform, wherein each spatial domain segment comprises one of a plurality of spatial domain segments of the at least one image channel; generating at least one noise correction function in response to the at least one segment transform, wherein the generating further comprises generating a plurality of cross correlation functions wherein a particular one of the plurality of cross correlations depends upon the cross correlation between a first segment transform derived from a first image channel and one or more spatially corresponding segment transforms from one or more image channels other than the first image channel of the digital image; applying the at least one noise correction function to produce at least one corrected transform wherein the corrected transform depends upon, directly or indirectly, the at least one segment transform; and transforming the at least one corrected transform from the frequency domain to the spatial domain to create at least one corrected spatial domain segment.