Handwritten/printed text separation Using pseudo- lines for contextual re-labeling
Identifieur interne : 000967 ( Main/Exploration ); précédent : 000966; suivant : 000968Handwritten/printed text separation Using pseudo- lines for contextual re-labeling
Auteurs : Ahmad-Montaser Awal [France] ; Abdel Belaïd [France] ; Vincent Poulain D'Andecy [France]Source :
English descriptors
- mix :
Abstract
—This paper addresses the problem of machine printed and handwritten text separation in real noisy documents. We have proposed in a previous work a robust separation system relying on a proximity string segmentation algorithm. The extracted pseudo-lines and pseudo-words are used as basic blocks for classification. A multi-class support vector machine (SVM) with Gaussian kernel associates first an appropriate label to each pseudo-word. Then, the local neighborhood of each pseudo-word is studied in order to propagate the context and correct the classification errors. In this work, we first propose to model the separation problem by conditional random fields considering the horizontal neighborhood. As the considered neighborhood is too local to solve certain error cases, we have enhanced this method by using a more global context based on class dominance in the pseudo-line. The method has been evaluated on business documents. It separates handwritten and printed text with better scores (99.1% and 99.2% respectively), contrary to noise which is very random in these documents (90.1%).
Url:
DOI: 10.1109/ICFHR.2014.13
Affiliations:
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Le document en format XML
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<front><div type="abstract" xml:lang="en">—This paper addresses the problem of machine printed and handwritten text separation in real noisy documents. We have proposed in a previous work a robust separation system relying on a proximity string segmentation algorithm. The extracted pseudo-lines and pseudo-words are used as basic blocks for classification. A multi-class support vector machine (SVM) with Gaussian kernel associates first an appropriate label to each pseudo-word. Then, the local neighborhood of each pseudo-word is studied in order to propagate the context and correct the classification errors. In this work, we first propose to model the separation problem by conditional random fields considering the horizontal neighborhood. As the considered neighborhood is too local to solve certain error cases, we have enhanced this method by using a more global context based on class dominance in the pseudo-line. The method has been evaluated on business documents. It separates handwritten and printed text with better scores (99.1% and 99.2% respectively), contrary to noise which is very random in these documents (90.1%).</div>
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<tree><country name="France"><region name="Grand Est"><name sortKey="Awal, Ahmad Montaser" sort="Awal, Ahmad Montaser" uniqKey="Awal A" first="Ahmad-Montaser" last="Awal">Ahmad-Montaser Awal</name>
</region>
<name sortKey="Belaid, Abdel" sort="Belaid, Abdel" uniqKey="Belaid A" first="Abdel" last="Belaïd">Abdel Belaïd</name>
<name sortKey="Poulain D Andecy, Vincent" sort="Poulain D Andecy, Vincent" uniqKey="Poulain D Andecy V" first="Vincent" last="Poulain D'Andecy">Vincent Poulain D'Andecy</name>
</country>
</tree>
</affiliations>
</record>
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