Patent ID: 7724981
Filing Date: 2010-05-25
Classification: G06T,H04N

Abstract:
1. A computer-readable medium having stored thereon computer-executable instructions for programming a processor to operate on an image of a document, wherein the instructions program the processor to: for an electronic file comprising a representation of the document, portion the representation of the document into non-overlapping areas, each area comprising a matrix of pixels, each pixel having an initial grayscale value and a position in the matrix; for each area, determine a black point value and a white point value; for each pixel in each area, determine a revised pixel grayscale value for each pixel using one or more selections from the group consisting of: the white point value for at least one area adjacent to each area comprising each pixel, wherein the determining of the revised pixel grayscale value for each pixel further comprises: produce the image of the document using the revised grayscale values for each pixel.