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OCR4all -- An Open-Source Tool Providing a (Semi-)Automatic OCR Workflow for Historical Printings


Sep 09, 2019
Christian Reul, Dennis Christ, Alexander Hartelt, Nico Balbach, Maximilian Wehner, Uwe Springmann, Christoph Wick, Christine Grundig, Andreas Büttner, Frank Puppe

* submitted to MDPI - Applied Sciences 

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State of the Art Optical Character Recognition of 19th Century Fraktur Scripts using Open Source Engines


Oct 08, 2018
Christian Reul, Uwe Springmann, Christoph Wick, Frank Puppe

* Submitted to DHd 2019 (https://dhd2019.org/) which demands a... creative... submission format. Consequently, some captions might look weird and some links aren't clickable. Extended version with more technical details and some fixes to follow 

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Calamari - A High-Performance Tensorflow-based Deep Learning Package for Optical Character Recognition


Aug 06, 2018
Christoph Wick, Christian Reul, Frank Puppe

* 11 pages, 3 figures 

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Improving OCR Accuracy on Early Printed Books by combining Pretraining, Voting, and Active Learning


Feb 28, 2018
Christian Reul, Uwe Springmann, Christoph Wick, Frank Puppe

* Submitted to JLCL Volume 33 (2018), Issue 1: Special Issue on Automatic Text and Layout Recognition 

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Improving OCR Accuracy on Early Printed Books using Deep Convolutional Networks


Feb 27, 2018
Christoph Wick, Christian Reul, Frank Puppe

* 16 pages, 4 figures, 8 tables, submitted to JLCL Volume 33 (2018), Issue 1 

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Fully Convolutional Neural Networks for Page Segmentation of Historical Document Images


Feb 15, 2018
Christoph Wick, Frank Puppe

* 6 pages, 7 figures, conference 

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Transfer Learning for OCRopus Model Training on Early Printed Books


Dec 21, 2017
Christian Reul, Christoph Wick, Uwe Springmann, Frank Puppe


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Leaf Identification Using a Deep Convolutional Neural Network


Dec 04, 2017
Christoph Wick, Frank Puppe


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Improving OCR Accuracy on Early Printed Books by utilizing Cross Fold Training and Voting


Nov 27, 2017
Christian Reul, Uwe Springmann, Christoph Wick, Frank Puppe


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LAREX - A semi-automatic open-source Tool for Layout Analysis and Region Extraction on Early Printed Books


Jan 20, 2017
Christian Reul, Uwe Springmann, Frank Puppe


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Authoring case based training by document data extraction


Sep 14, 2005
Christian Betz, Alexander Hoernlein, Frank Puppe

* 11 pages, 10th ChEM Workshop, 2005; technical article 

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