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3 April 1997 Document matching on CCITT Group 4 compressed images
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Proceedings Volume 3027, Document Recognition IV; (1997)
Event: Electronic Imaging '97, 1997, San Jose, CA, United States
A method is proposed for detecting whether tow CCITT group 4 images were scanned from the same document. Features are extracted from rectangular patches of text and compared with a modified Hausdorff distance measure. Two images are said to be 'equivalent' if the Hausdorff measure finds that a specified number of features are located within a given distance of one another in both images. This paper explains the technique and presents experimental results that demonstrate its effectiveness.It is shown that features extracted from a one-inch square patch of image data provide better than 95 percent correct retrieval accuracy with no false positives on a database of 800 documents.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jonathan J. Hull "Document matching on CCITT Group 4 compressed images", Proc. SPIE 3027, Document Recognition IV, (3 April 1997);


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