Patent ID: 7657123
Filing Date: 2010-02-02
Classification: G06T,H04N

Abstract:
1. A text document capture method for digitizing a text document segment in printed form, consisting of: imparting a continuous lateral jittering between a digital imaging device and the text document; obtaining multiple laterally-displaced digital images of all of the text document segment during the continuous lateral jittering and determining fractional pixel offset positions at which each image was obtained directly from the lateral displacement of each digital image; forming from the multiple laterally displaced images enhanced resolution image pixels of an enhanced resolution representation of the text document as a direct function of the fractional pixel offset positions; said direct function providing a weighted combination of the image values of a plurality of multiple image pixel samples, derived from the multiple laterally-displaced digital images, which are determined to be nearest each enhanced resolution image pixel using the fractional pixel offset positions; and de-blurring the enhanced resolution representation of the text document by thresholding the enhanced resolution representation into either one of two pixel luminance levels, representing foreground and background pixels, with the foreground pixels corresponding to text in the text document.