Publikation

Automatic Transcription of Handwritten Medieval Documents

Andreas Fischer, Markus Wuthrich, Marcus Liwicki, Volkmar Frinken, Horst Bunke, Gabriel Viehhauser, Michael Stolz

In: Proceedings of the 15th International Conference on Virtual Systems and MultiMedia. International Conference on Virtual Systems and MultiMedia (VSMM-2009) September 9-12 Vienna Austria Seiten 137-142 ISBN 978-0-7695-3790-0 IEEE Computer Society 2009.

Abstrakt

The automatic transcription of historical documents is vital for the creation of digital libraries. In order to make images of valuable old documents amenable to browsing, a transcription of high accuracy is needed. In this paper, two state-of-the art recognizers originally developed for modern scripts are applied to medieval documents. The first is based on Hidden Markov Models and the second uses a Neural Network with a bidirectional Long Short-Term Memory. On a dataset of word images extracted from a medieval manuscript of the 13th century, written in Middle High German by several writers, it is demonstrated that a word accuracy of 93.32% is achievable. This is far above the word accuracy of 77.12% achieved with the same recognizers for unconstrained modern scripts written in English. These results encourage the development of real world systems for automatic transcription of historical documents with a view to image and text browsing in digital libraries.

Projekte

Weitere Links

Deutsches Forschungszentrum für Künstliche Intelligenz
German Research Center for Artificial Intelligence