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Dans le cadre du programme e.philologie PSL (ENC, EPHE, ENS, EHESS) :Lundi 27 mars 17-19h, salle Quicherat, ENC, rue Richelieu 65, métro Pyramides.Vincent Christlein (Université de Erlangen) ((Ce séminaire sera filmé et la communication se fera anglais. ))Automatic Handwriting Analysis - From Scribe to Script Type Classification. Digital libraries, such as Gallica, monasterium.net, or the Vatican’s DigiVatLib, are amassing digitizations of medieval manuscripts. However, those digital copies are often produced without any or only little metadata. This is problematic when trying to actually work scientifically with the data. Enriching the metadata for these collections often requires human experts, making it a time-consuming and expensive task. In this context, methods derived from the field of computer vision are explored to automatically compute missing information such as the script type, the date, or the writer. The talk will start explaining a method for writer recognition based on bag-of-(visual) words. While this method works very good for contemporary data, historical data still poses a challenge, where factors such as decorations or background artifacts might influence a correct assignment. Possibilities to deal with historical data will be shown before proceeding with two other tasks: the classification of medieval Latin script types and the dating of medieval charters.Réferences :Christlein, V., Bernecker, D., Hönig, F., Maier, A., &#38; Angelopoulou, E. (2017). Writer Identification Using GMM Supervectors and Exemplar-SVMs. Pattern Recognition, 63, pp.258-267.Christlein, V., Diem, M., Kleber, F., Mühlberger G., Schwägerl-Melchior V., van Gelder, E., Maier, A. (2016) Automatic Writer Identification in Historical Documents: A Case Study. Zeitschrift für digitale GeisteswissenschaftenHofmann, S., Gropp, M., Bernecker, D., Pollin, C., Maier, A., &#38; Christlein, V. (2016). Vesselness for text detection in historical document images. IEEE International Conference on Image Processing (ICIP), Phoenix, AZ, 2016, pp. 3259-3263.Cloppet, F., Églin, V., Kieu, V.C., Stutzmann, D., Vincent, N. (2016). ICFHR2016 Competition on the Classification of Medieval Handwritings in Latin Script, 15th International Conference on Frontiers in Handwriting Recognition (ICFHR), Shenzhen, 2016, pp. 590-595.Le séminaire est ouvert à tous, cependant nous vous demandons de vous inscrire en ligne : https://goo.gl/forms/ycoSTZcuxdrQ1cjY2Pour toute information complémentaire, contactez Vanessa Juloux (vanessa.juloux [AT] ephe.sorbonne.fr).