News
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IMPACT Final Conference – Introduction to the IMPACT Centre of Competence
Aly Conteh (BL), Hildelies Balk-Pennington De Jongh (KB) and Lieke Ploeger (KB) introduced and launched the IMPACT Centre of Competence!
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IMPACT Final Conference – Evaluation Tools, Ground Truth and Datasets: Stefan Pletschacher
Stefan Pletschacher (University of Salford) began by presenting an overview of the digitisation workflow and the issues at each stage. These stages are usually given as scanning (whatever goes wrong here is hard to recover later) image enhancement, layout analysis, OCR and post processing. He explained that you should evaluate at each step but should…
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IMPACT Final Conference – Experiences in Mass Digitisation with the California Digital Library
Paul Fogel, Technical Lead of the Mass Digitisation team at the California Digital Library (CDL), presented digitisation experiences and challenges faced by CDL when dealing with OCR document text extraction. Fogel emphasised the difficulties and obstacles posed by bad OCR during the mass indexing and digitisation processes of cultural records: marginalia, image-text misinterpretations and fonts,…
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IMPACT Final Conference – Case study: Scanning Parameters
Apostolos Antonacopoulos’ (University of Salford) session presented and analysed the effects of scanning parameters on OCR quality, as well as the issues regarding storage and maintenance costs for Content Holders. Different experiments were carried out in order to establish scanning effects on OCR quality, including colour vs greyscale vs bitonal, effects on resolution and the…
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IMPACT Final Conference – BL 24-25th October 2011 British Library
Today is the IMPACT Final Conference to be held at the British Library. The IMPACT team will be blogging summaries of all the main sessions. The programme is available from the IMPACT Web site.
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Centre of Competence
Hildelies Balk – Pennington de Jongh from the Koninklijke Bibliotheek, the National Library of the Netherlands, and project leader of the IMPACT project, outlined the Centre of Competence and the services it will offer. The CoC will be tasked with sustaining the developments of the IMPACT project into the future, and will officially be opened at the…
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Evaluierungswerkzeuge
Stefan Pletschacher from the University of Salford presented methods to evaluate OCR results. For a proper evaluation, ‘ground truth’, that is almost 100% correct text is needed. But a big challenge lies in how to calculate the gravity of different kinds of errors. Will character or word accuracy be used? Do errors in heading count…
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Analyse und Nachkorrektur von OCR-Ergebnissen
Ulrich Reffle, who works at the Centre of Information and Language Processing of the Ludwig-Maximilians-University Munich, spoke about document-centric analysis and error detection, which can enable faster and easier correction of OCRed historical texts.
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Entscheidungsfindung in der Digitalisierung durch experimentelles Workflow-Design
Sven Schlarb from the Austrian National Library talked about the challenges of integrating the 22 software tools developed within IMPACT, and how they were met in the IMPACT Interoperability Framework (IIF), a workflow design and management platform.
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Vorstellung des Projekts IMPACT
Hildelies Balk – Pennington de Jongh from the Koninklijke Bibliotheek, the National Library of the Netherlands, and project leader of the IMPACT project, opened the day by introducing the project, its aims and goals, and giving an outlook on the Centre of Competence, which will sustain the project’s developments into the future.