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Abstract

A computer system that execute a method to stitch satellite images into a wide-angle image. The method includes dividing each of the satellite images into plural subimages, determining whether the subimages include an overlap area that overlaps with adjacent subimages, obtaining cropped subimages by removing the overlap area from the subimages, generating preprocessed satellite images each including the cropped subimages, selecting a reference image and a target image from the preprocessed satellite images, determining plural correspondent pairs in an overlap region between the reference and target images based on a feature matching algorithm, obtaining a transformation matrix by a least-squares algorithm and based on coordinates of the correspondent pairs, obtaining calibrated coordinates for each pixel of the target image by applying the transformation matrix, and stitching the target images into the wide-angle image based on the calibrated coordinates of the target image.

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First Claim