Segmentation of page images having artifacts of photocopying and scanning

摘要

The analysis of scanned documents is important in the construction of digital libraries and paperless offices. One significant challenge is coping with artifacts of photocopying and scanning. We present a series of simple techniques for handling these difficulties. Using 125 images of the University of Washington scanned documents database, we demonstrate the effectiveness of these methods in preparing the images for segmentation by a multiresolution algorithm.