Positionally encoded document image analysis and labeling

Details Positionally encoded document image analysis and labeling Positionally encoded document image analysis and labeling

G - Physics

06

F

G06F 3/033 (2006.01) G06F 3/03 (2006.01)

Patent

CA 2491586

Disclosed embodiments of the invention relate to analyzing document images, which contain positionally encoded information, such as a maze-pattern watermark, and labeling the images based on a degree to which the document's content, such as text, occludes the position-encoding information. Depending on the degree of such occlusion, it may not be possible to extract enough position-encoding bits from a camera-captured image of the document to determine the camera-captured image's location within the document. An analysis-and-labeling module receives, as input, image data output by an image- generation-and-capturing module and off-line training data; performs analysis-and-labeling processing; and outputs image-label information. The results of document-analysis-and-labeling processing may be used for efficiently determining a location of a camera-captured image within a positionally encoded document.

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