1. A computer-implementable method of estimating a geometrical relationship between a first image and a second image, said second image including a noise component, said method comprising the steps of: (a) determining a location and size of each one of a plurality of image patches, based on the noise component included in said second image and correlation information derived from said first image; (b) identifying a plurality of first image areas in said first image and a corresponding plurality of second image areas in said second image, based on the location and size of each one of said plurality of image patches, wherein each first image area of said first image corresponds to a related second image area of said second image; and (c) determining a geometrical relationship between said first and second images by comparing, for each one of said first image areas, information located within said first image area with information located within said corresponding related second image area.