Patent ID: 7119816
Filing Date: 2006-10-10
Classification: H04N

Abstract:
1. A computer-implemented process for converting the contents of a planar object into a high-resolution image, comprising the process actions of: acquiring a sequence of images of portions of a planar object which have been captured in a prescribed pattern and wherein each subsequent image overlaps a previous image in said pattern; extracting points of interest in each image; matching said points of said interest between each pair of successive images wherein the process action of matching said points of said interest between each pair of successive images comprises the process actions of: whenever the largest correlation scare computed between the window of the earlier captured image and each of the windows in the later captured image exceeds a prefixed threshold, designating the associated point in the later-captured image as a match candidate for the point under consideration in the earlier-captured image; computing a projective mapping between each pair of successive images in order to determine corresponding pixel locations in the images; and generating a composite image from said sequence of images using said projective mapping.