PROCESSING IMAGES OF DEFORMED INDICIA-BEARING SURFACES

Abstract: an example method of processing images of deformed indicia-bearing surfaces includes: detecting, within a document image, a plurality of image fragments, wherein each image fragment of the plurality of image fragment contains a respective sequence of alphabet symbols; grouping the plurality of image fragments by lines of text to be reconstructed in the document image; generating a map of isolines associated with the document image, wherein an isoline identifies a set of points that lie on a straight line of an undistorted image corresponding to the document image; generating a reverse transformation matrix that defines a set of transformations to be applied to the document image in order to remove image distortions caused by deformations of an indicia bearing surface; and generating an undistorted document image by applying the reverse transformation matrix to the document image.

Inventor(s): Ivan Zagaynov, Dmitry Solntsev, Alina Kalyakina

CPC Classification: G06V30/1607 (IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING)

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