Patent ID: 7574017

Claim:
A method for comparing and matching a first set of digital data to at least a second set of digital data, comprising: using a computer graphics card for raster transforming at least one of the first set of digital data and the second set of digital data said raster transformations including combinations of rotations, scales, perspective transforms, and translations; depending upon the results of a pixel acceptance test performed by an acceptance tester included in the computer graphics card, performing a statistical comparison between at least part of the first set of digital data and at least part of the second set of digital data using a statistical processor included in the computer graphics card; wherein the statistical processor uses pixel alpha values to weight any of the first set of digital data and at the second set of digital data; and wherein the statistical comparison includes statistically comparing and matching the alpha weighted and raster transformed sets of digital data to appropriately corresponding portions of each other using the statistical processor.