Patent Document ID: 20090067681
Application ID: 11918291
Patent Flag: 0

Claim One:
1. An iterative method for normalization of a probe image against the Eigenspace learned from a database of images, said method comprising the following steps: (a) initialize the transformation parameters according to said probe image gathered in the detection stage; (b) construct a deformed grid using said transformation parameters; (c) resample said image using said deformed grid to obtain a resampled image; (d) form a set of linear equations that describe the set of transformation parameters and Eigenspace coefficients that, if used to resample the image, will allow improved representation of the image in the Eigenspace as compared to the representation obtained in the previous iteration; (e) solve said set of linear equations to simultaneously obtain said transformation parameters and said Eigenspace coefficients; and (f) repeat steps (b) through (e) until the change in said transformation parameters between two consecutive iterations are less than a predetermined threshold.