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Separating handwritten material from machine printed text using hidden Markov models

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2 Author(s)
Guo, J.K. ; Panasonic Inf. & Networking Technols. Lab., Princeton, NJ, USA ; Ma, M.Y.

In this paper, we address the problem of separating handwritten annotations from machine-printed text within a document. We present an algorithm that is based on the theory of hidden Markov models (HMMs) to distinguish between machine-printed and handwritten materials. No OCR results are required prior to or during the process, and the classification is performed at the word level. Handwritten annotations are not limited to marginal areas, as the approach can deal with document images having handwritten annotations overlaid on machine-printed text and it has been shown to be promising in our experiments. Experimental results show that the proposed method can achieve 72.19% recall for fully extracted handwritten words and 90.37% for partially extracted words. The precision of extracting handwritten words has reached 92.86%

Published in:

Document Analysis and Recognition, 2001. Proceedings. Sixth International Conference on

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