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Tonazzini A., Bianco G., Salerno E. Registration and enhancement of double-sided degraded manuscripts acquired in multispectral modality. In: ICDAR 2009 - 10th International Conference on Document Analysis and Recognition (Barcelona, Spagna, 26-29 luglio 2009). Proceedings, pp. 546 - 550. Oriol Ramos, Dimosthenis Karatzas (eds.). IEEE Computer Society, 2009.
 
 
Abstract
(English)
We propose a system to process multispectral scans of double-sided documents. It can co-register any number of recto and verso channel maps, and reduce the bleed-through/show-through distortions by exploiting blind source separation. From RGB scans, it is also able to recover the original colors, thus improving the readability of a document while maintaining its original appearance. The recto and verso patterns obtained can then be further analyzed. Many approaches to this problem are based on single-channel or multichannel recto-verso scans. In any case, getting rid of the unwanted interferences is a challenging problem. All the methods relying on pixel intensities, such as the one presented here, need a very accurate co-registration, and this is difficult for recto-verso pairs since the relevant information is often very sparse.
URL: http://ieeexplore.ieee.org/xpl/tocresult.jsp?isnumber=5277472&isYear=2009&count=288&page=4&ResultStart=100
DOI: 10.1109/ICDAR.2009.131
Subject Image enhancement
Image registration
Binarization
Ancient documents
I.4.3 Enhancement. Registration
I.4.4 Restoration


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