Patent ID: 6714688
Filing Date: 2004-03-30
Classification: G06T

Abstract:
A method for enhancing a digital image channel, the method comprising the following steps:(a) providing a digital image channel having image pixels; (b) providing interpolation parameter values; (c) generating an interpolated digital image channel using the interpolation parameter values and the digital image channel; (d) generating edge shaper parameter values from the interpolation parameter values; and (e) generating an enhanced digital image channel from the interpolated digital channel by applying a non-linear spatial filter edge shaping algorithm controlled by the edge shaper parameter values; further includes the step of identifying a pixel interest; calculating at least one statistical characteristic from image pixels corresponding to a region about said pixel of interest; using the statistical characteristic and the pixel of interest to calculate an enhanced output pixel; wherein the step of calculating the enhanced output pixel includes normalizing a predetermined tone scale function for the statistical characteristic in order to generate a normalized tone scale function; and applying the normalized tone scale function to the pixel of interest in order to generate the enhanced output pixel.