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Compensating for distortion in digital images
Google Inc..
2010 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

Systems and methods using an unstructured pattern for three-dimensional model construction, such as may be used for processing images of documents are disclosed. The method generally includes projecting an unstructured infrared pattern onto a target object, capturing a pair of stereoscopic images of the pattern projected onto the target object, such as with infrared cameras, performing signal processing on the pair of stereoscopic images to cross-correlate portions of the stereoscopic images in order to identify corresponding portions in the stereoscopic images, and constructing a three-dimensional model of the target object. The three-dimensional model can be utilized to rectify, e.g., de-warp, an image of the target object, e.g., a page or both facing pages of a bound document.

Place, publisher, year, edition, pages
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Engineering and Technology
URN: urn:nbn:se:kth:diva-38220OAI: diva2:436268
US 7974463 (2011-07-15)

QC 20111115. QC 20130806

Available from: 2011-08-22 Created: 2011-08-22 Last updated: 2013-08-06Bibliographically approved

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Saric, Marin
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