Patent ID: 7995861

Claim:
A computer-implemented method comprising: obtaining projective transformations corresponding to two dimensional images to be joined together in accordance with the projective transformations; selecting, by a computer, one of the two dimensional images to be a reference image for remaining ones of the two dimensional images, the selecting being based on a measure of overall distortion for the two dimensional images; setting a projective transformation of the one of the images according to a group transform; correcting remaining projective transformations of the remaining images in accordance with the setting the projective transformation of the one of the images; and making the two dimensional images and the projective transformations available for further processing and output; wherein the selecting comprises estimating which of the two dimensional images minimizes the measure of overall distortion for the two dimensional images when used as a reference; and wherein the estimating comprises finding an image in the two dimensional images with a minimum maximal distance to overlapping images in the two dimensional images.