OCR(-D) und Kitodo Michael Lütgen, Zeutschel GmbH Elisabeth Engl, HAB Wolfenbüttel Konstantin Baierer, Staatsbibliothek zu Berlin
https://hackmd.io/@kba/S1peIVxhH
Kitodo-Anwendertreffen 2019-11-19
OCR-D in a nutshell
DFG-funded Project focussed on full-text digitization of VD library material => Development of Software for whole OCR process Coordination project (HAB, KIT, BBAW, SBB) 8 module projects implementing specific functionality
Pilotbibliotheken
Functionality test till January 2020 Recognition rate and performace are secondary at the moment Partner:
SLUB Dresden UB Mannheim SUB Göttingen UB Heidelberg ULB Halle ULB Darmstadt
Specs and Documentation https://ocr-d.github.io
File Formats Usage: METS, PAGE, OCRD-ZIP Command line interface Actionable Tool description Docker conventions Ground Truth Transcription Guidelines Installation and implementation instructions
https://ocr-d.github.io
Why ABBYY
Okay segmentation Fast Good recognition of modern types
Why NOT ABBYY
Closed Source Volume-based licensing Little support for historical types No training possible Fraktur: expensive and very little development Black Box: Few possibilities to influence recognition
Why OCR-D?
Free Software Massive progress in neural networks in recent years => Excellent quality, esp. with fine-tuned models Modular: OCR as a process of configurable steps => alternatives for all steps
Considerations
Configurability: In Kitodo.Production UI? Config files? Black box? Technical Integration: Long-running and potentially resource-intensive processes Deployment: Locally? Remote but in-house? Commercial service provider? Verbund-level service? Tradeoff: Quality of recognition vs speed and manual effort
Discussion I
How much of a priority is OCR for your institution? What use cases do you have for OCR beyond search and providing research data? How important is OCR for older types or less-supported languages at your institution?
Discussion II
How could OCR improve Kitodo.Production?
Generate table of contents Article/Issue separation
OCR training as part of Kitodo? How do you integrate OCR into Kitodo now? Once OCR-D is ready, what is the added value of having OCR done by an external provider?
Discussion III
Which file formats do you want OCR results in?
PAGE (currently supported by OCR-D) ALTO hOCR TEI WebAnnotation (for IIIF)
Resume presentation
OCR(-D) und Kitodo Michael Lütgen, Zeutschel GmbH Elisabeth Engl, HAB Wolfenbüttel Konstantin Baierer, Staatsbibliothek zu Berlin https://hackmd.io/@kba/S1peIVxhH Kitodo-Anwendertreffen 2019-11-19
{"metaMigratedAt":"2023-06-15T01:44:40.297Z","metaMigratedFrom":"YAML","title":"OCR(-D) und Kitodo","breaks":true,"description":"View the slide with \"Slide Mode\".","slideOptions":"{\"theme\":\"league\",\"spotlight\":{\"enabled\":false}}","contributors":"[{\"id\":\"0aebf9c4-477a-4517-ac73-1d9ab93f410b\",\"add\":185,\"del\":152},{\"id\":\"e8137db5-d2e1-4125-8f51-e51a4ef3646b\",\"add\":5298,\"del\":1229}]"}