piwik-script

English Intern
Zentrum für Philologie und Digitalität "Kallimachos"

Publications

2021

  • OCR-D & OCR4all: Two Comp... - Download
    OCR-D & OCR4all: Two Complementary Approaches for Improved OCR of Historical Sources. Baierer, Konstantin; Büttner, Andreas; Engl, Elisabeth; Hinrichsen, Lena; Reul, Christian in 6th International Workshop on Computational History (2021).
     
  • Mixed Model OCR Training ... - Download
    Mixed Model OCR Training on Historical Latin Script for Out-of-the-Box Recognition and Finetuning. Reul, Christian; Wick, Christoph; Nöth, Maximilian; Büttner, Andreas; Wehner, Maximilian; Springmann, Uwe in 6th International Workshop on Historical Document Imaging and Processing (2021).
     
  • Semantische Tiefenerschli... - Download
    Semantische Tiefenerschließung historischer Lexika mittels Text- und Typographieerkennung. Reul, Christian in Ursula Rautenberg/Anja Voeste (Hgg.): Typographie. Disziplinäre Zugänge, fachliche Konzeptionierungen, Forschungsfragen und Projekte (in press) (2021).
     
  • One-Model Ensemble-Learni... - Download
    One-Model Ensemble-Learning for Text Recognition of Historical Printings. Wick, Christoph; Reul, Christian in Proceedings of the 16th International Conference on Document Analysis and Recognition ICDAR 2021 (accepted for oral presentation) (2021).
     

2020

  • Calamari - A High-Perform... - Download
    Calamari - A High-Performance Tensorflow-based Deep Learning Package for Optical Character Recognition. Wick, Christoph; Reul, Christian; Puppe, Frank in Digital Humanities Quarterly (2020). 14(2)
     

2019

  • Automatic Semantic Text T... - Download
    Automatic Semantic Text Tagging on Historical Lexica by Combining OCR and Typography Classification. Reul, Christian; Göttel, Sebastian; Springmann, Uwe; Wick, Christoph; Würzner, Kay-Michael; Puppe, Frank in Proceedings of the 3rd International Conference on Digital Access to Textual Cultural Heritage (2019).
     
  • State of the Art Optical ... - Download
    State of the Art Optical Character Recognition of 19th Century Fraktur Scripts using Open Source Engines. Reul, Christian; Springmann, Uwe; Wick, Christoph; Puppe, Frank in DHd 2019 Digital Humanities: multimedial & multimodal (2019).
     
  • Ground Truth for training... - Download
    Ground Truth for training OCR engines on historical documents in German Fraktur and Early Modern Latin. Springmann, Uwe; Reul, Christian; Dipper, Stefanie; Baiter, Johannes in JLCL: Special Issue on Automatic Text and Layout Recognition (2019).
     
  • OCR4all - An Open-Source ... - Download
    OCR4all - An Open-Source Tool Providing a (Semi-)Automatic OCR Workflow for Historical Printings. Reul, Christian; Christ, Dennis; Hartelt, Alexander; Balbach, Nico; Wehner, Maximilian; Springmann, Uwe; Wick, Christoph; Grundig, Christine; Büttner, Andreas; Puppe, Frank in Applied Sciences (2019). 9(22)
     

2018

  • Comparison of OCR Accurac... - Download
    Comparison of OCR Accuracy on Early Printed Books using the Open Source Engines Calamari and OCRopus. Wick, Christoph; Reul, Christian; Puppe, Frank in JLCL: Special Issue on Automatic Text and Layout Recognition (2018). 33(1) 79–96.
     
  • Improving OCR Accuracy on... - Download
    Improving OCR Accuracy on Early Printed Books by combining Pretraining, Voting, and Active Learning. Reul, Christian; Springmann, Uwe; Wick, Christoph; Puppe, Frank in JLCL: Special Issue on Automatic Text and Layout Recognition (2018). 33(1) 3–24.
     
  • Improving OCR Accuracy on... - Download
    Improving OCR Accuracy on Early Printed Books by Utilizing Cross Fold Training and Voting. Reul, Christian; Springmann, Uwe; Wick, Christoph; Puppe, Frank in 2018 13th IAPR International Workshop on Document Analysis Systems (DAS) (2018).
     

2017

  • Transfer Learning for OCR... - Download
    Transfer Learning for OCRopus Model Training on Early Printed Books. Reul, Christian; Wick, Christoph; Springmann, Uwe; Puppe, Frank in 027.7 Journal for Library Culture (2017).
     
  • Case Study of a highly au... - Download
    Case Study of a highly automated Layout Analysis and OCR of an incunabulum: ‘Der Heiligen Leben’ (1488). Reul, Christian; Dittrich, Marco; Gruner, Martin in Proceedings of the 2nd International Conference on Digital Access to Textual Cultural Heritage (2017).
     
  • LAREX – A semi-automati... - Download
    LAREX – A semi-automatic open-source Tool for Layout Analysis and Region Extraction on Early Printed Books. Reul, Christian; Springmann, Uwe; Puppe, Frank in Proceedings of the 2nd International Conference on Digital Access to Textual Cultural Heritage (2017).
     

2016

  • Expectation-driven Text E... - Download
    Expectation-driven Text Extraction from Medical Ultrasound Images. Reul, Christian; Köberle, Philipp; Üçeyler, Nurcan; Puppe, Frank in Studies in Health Technology and Informatics (2016).
     
  • Autonomous Quadrocopter f... - Download
    Autonomous Quadrocopter for Search, Count and Localization of Objects. Gageik, Nils; Reul, Christian; Montenegro, Sergio in Recent Advances in Robotic Systems (2016).
     
  • Cross Dataset Evaluation ... - Download
    Cross Dataset Evaluation of Feature Extraction Techniques for Leaf Classification. Reul, Christian; Toepfer, Martin; Puppe, Frank in International Journal of Artificial Intelligence & Applications (2016).