Patent ID: 8170360
Filing Date: 2012-05-01
Classification: G06T

Abstract:
1. A method for enhancing an image, comprising the steps of: generating a plurality of Gaussian images from the image; generating a first plurality of Laplacian images from the generated Gaussian images, the plurality of Laplacian images constituting a Laplacian pyramid of images; generating a histogram for each of the plurality of Laplacian images; integrating each of the histograms to produce a corresponding cumulative distribution function; matching each of the produced cumulative distribution functions to a desired cumulative distribution function; generating a desired probability density function for each histogram based on the desired cumulative distribution function; shaping each of the histograms to match their corresponding generated probability density functions to produce a second plurality of Laplacian images; and combining iteratively each of the second Laplacian images with each of the plurality of Gaussian images expanded at each iteration to generate an enhanced image.