Patent ID: 8081830
Filing Date: 2011-12-20
Classification: G06T,H04N

Abstract:
1. A method of enhancing a digital image, the method comprising: determining successive sets of one-dimensional transform coefficients by successively employing a one-dimensional transform on successive portions of the digital image; deriving successive two-dimensional transform coefficients from transforms of different respective sets of the determined successive sets of one-dimensional transform coefficients; modifying the two-dimensional transform coefficients; ascertaining successive sets of one-dimensional transform coefficients by successively employing a one-dimensional inverse transform on the modified two-dimensional transform coefficients; sequentially combining respective ones of the ascertained sets of one-dimensional transform coefficients to determine statistical representations; and successively applying a one-dimensional inverse transform on the statistical representations to produce an output image; wherein the determining, the deriving, the modifying, the ascertaining, the combining and the applying are performed by a processor.