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Aletheia EditionsResourcesUse cases


<a name='Tutorials'></a>Tutorials

Tutorial on Glyph Segmentation with Aletheia

This tutorial describes different approaches to segment a document page into glyphs (character objects) using Aletheia.

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Efficient OCR Training Data Generation with Aletheia

Poster presented by PRImA in DAS2014, France.

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<a name='Manuals'></a>Manuals

Aletheia 3 User Guide

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A brief introduction to Aletheia

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<a name='ExampleFiles'></a>Example files

Example Image and Ground truth

These are the example files bundled with Aletheia.

Download ZIP [2.38 MB]

<h2><a name='AletheiaSans'></a>Aletheia Sans Font</h2>

Aletheia Sans is a font derived from Dejavu Sans. It has been enriched with characters that were required by several large-scale European and American digitisation projects for historical documents. Where possible, code points recommended by the Medieval Unicode Font Initiative (MUFI) were used.

Important note: Installing the font permanently will prevent automatic font updates in the Aletheia tool. Future changes will not be visible until the new version of the font is installed manually.

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<a name='WebAletheia'></a>Web Aletheia

A lightweight web based version of the Aletheia ground truthing system.

WebAletheia is based on the open source library PRImA-GWT.

Try it

PRImA-GWT on GitHub

<a name='RelatedPublications'></a>Related Publications

Quality Prediction System for Large-Scale Digitisation Workflows

C. Clausner, S. Pletschacher, A. Antonacopoulos

Proceedings of the 12th IAPR International Workshop on Document Analysis Systems (DAS2016), Santorini, Greece, April 11-14, 2016

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Efficient OCR Training Data Generation with Aletheia

C. Clausner, S. Pletschacher, A. Antonacopoulos

Short Paper Booklet of the 11th International Association for Pattern Recognition (IAPR) Workshop on Document Analysis Systems (DAS2014), Tours, France, April 2014, pp. 19-20

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Aletheia - An Advanced Document Layout and Text Ground-Truthing System for Production Environments

C. Clausner, S. Pletschacher, A. Antonacopoulos

Proceedings of the 11th International Conference on Document Analysis and Recognition (ICDAR2011), Beijing, China, September 2011, pp. 48-52

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<a name='CommunityResources'></a>Community resources

These resources are not maintained by the PRImA Research Lab. We are not responsible for the content in these external resources. If you that find any of the pages linked here is irrelevant or outdated, please let us know to update this section.

How do I segment a document using Tesseract then output the resulting bounding boxes and labels?

Useful answer to a question on stackoverflow.

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