All Outputs (54)

IMAGING APPARATUS AND METHODS (2018)
Patent

(EN) An apparatus for determining the values of one or more characteristics of a liquid, comprising support means for supporting a filter member in use, a reservoir for holding a sample of liquid in direct or indirect contact with the filter member i... Read More about IMAGING APPARATUS AND METHODS.

Ontology and framework for semantic labelling of document data and software methods (2018)
Presentation / Conference Contribution

We present a metadata labelling framework for datasets, software tools, and workflows. An ontology for document image analysis was developed with deep support for historical data. An accompanying open source software framework was implemented to enab... Read More about Ontology and framework for semantic labelling of document data and software methods.

Document analysis and text recognition (2018)
Book
(2018). V. Märgner, U. Pal, & A. Antonacopoulos (Eds.), Document analysis and text recognition. World Scientific. https://doi.org/10.1142/10689

The compendium presents the latest results of the most prominent competitions held in the field of Document Analysis and Text Recognition. It includes a description of the participating systems and the underlying methods on one hand and the datasets... Read More about Document analysis and text recognition.

Study protocol : responding to the needs of patients with IgA nephropathy, a social media approach (2017)
Journal Article

Background
IgA nephropathy is the most common cause of glomerulonephritis in the Western world and predominantly affects young adults. Demographically these patients are the biggest users of social media. With increasing numbers of patients turning... Read More about Study protocol : responding to the needs of patients with IgA nephropathy, a social media approach.

ICDAR2017 Competition on Recognition of Documents with Complex Layouts – RDCL2017 (2017)
Presentation / Conference Contribution

This paper presents an objective comparative evaluation of page segmentation and region classification methods for documents with complex layouts. It describes the competition (modus operandi, dataset and evaluation methodology) held in the context o... Read More about ICDAR2017 Competition on Recognition of Documents with Complex Layouts – RDCL2017.

ICDAR2017 Competition on Recognition of Early Indian Printed Documents – REID2017 (2017)
Presentation / Conference Contribution

This paper presents an objective comparative evaluation of page analysis and recognition methods for historical documents with text mainly in Bengali language and script. It describes the competition (modus operandi, dataset and evaluation methodolog... Read More about ICDAR2017 Competition on Recognition of Early Indian Printed Documents – REID2017.

Creating a complete workflow for digitising historical census documents : considerations and evaluation (2017)
Presentation / Conference Contribution

The 1961 Census of England and Wales was the first UK census to make use of computers. However, only bound volumes and microfilm copies of printouts remain, locking a wealth of information in a form that is practically unusable for research. In this... Read More about Creating a complete workflow for digitising historical census documents : considerations and evaluation.

Unearthing the recent past : digitising and understanding statistical information from census tables (2017)
Presentation / Conference Contribution

Censuses comprise a wealth of information at a large (national) scale that allow governments (who commission them) and the public to have a detailed snapshot of how people live (geographical distribution and characteristics). In addition to underpinn... Read More about Unearthing the recent past : digitising and understanding statistical information from census tables.

Effective geometric restoration of distorted historical documents for large-scale digitization (2017)
Journal Article
Yang, P., Antonacopoulos, A., Clausner, C., Pletschacher, S., & Qi, J. (2017). Effective geometric restoration of distorted historical documents for large-scale digitization. IET Image Processing, 11(10), 841-853. https://doi.org/10.1049/iet-ipr.2016.0973

Due to storage conditions and material’s non-planar shape, geometric distortion of the 2-D content is widely present in scanned document images. Effective geometric restoration of these distorted document images considerably increases character recog... Read More about Effective geometric restoration of distorted historical documents for large-scale digitization.

Quality prediction system for large-scale digitisation workflows (2016)
Presentation / Conference Contribution

The feasibility of large-scale OCR projects can so far only be assessed by running pilot studies on subsets of the target document collections and measuring the success of different workflows based on precise ground truth, which can be very costly to... Read More about Quality prediction system for large-scale digitisation workflows.

Making Europe’s historical newspapers searchable (2016)
Journal Article
Neudecker, C., & Antonacopoulos, A. (2016). Making Europe’s historical newspapers searchable. https://doi.org/10.1109/DAS.2016.83

This paper provides a rare glimpse into the overall approach for the refinement, i.e. the enrichment of scanned historical newspapers with text and layout recognition, in the Europeana Newspapers project. Within three years, the project processed mor... Read More about Making Europe’s historical newspapers searchable.

Navigating the storm : IMPACT, eMOP, and Agile Steering Standards (2015)
Journal Article

This article discusses two major initiatives tasked with developing tools to im- prove optical character recognition (OCR) or the mechanical keying of texts that are digitally available only as page images. The two initiatives are the IMProving ACces... Read More about Navigating the storm : IMPACT, eMOP, and Agile Steering Standards.

Europeana newspapers OCR workflow evaluation (2015)
Presentation / Conference Contribution

This paper summarises the final performance evaluation results of the OCR workflow which was employed for large-scale production in the Europeana Newspapers project. It gives a detailed overview of how the involved software performed... Read More about Europeana newspapers OCR workflow evaluation.

ICDAR2015 competition on recognition of documents with complex layouts - RDCL2015 (2015)
Book Chapter
Antonacopoulos, A., Clausner, C., Papadopoulos, C., & Pletschacher, S. (2015). ICDAR2015 competition on recognition of documents with complex layouts - RDCL2015. In 2015 13th International Conference on Document Analysis and Recognition (ICDAR) (1151-1155). IEEE. https://doi.org/10.1109/ICDAR.2015.7333941

This paper presents an objective comparative evaluation of page segmentation and region classification methods for documents with complex layouts. It describes the competition (modus operandi, dataset and evaluation methodology) held in the context o... Read More about ICDAR2015 competition on recognition of documents with complex layouts - RDCL2015.

Historical typewritten document recognition using minimal user interaction (2015)
Book Chapter
Retsinas, G., Gatos, B., Antonacopoulos, A., Louloudis, G., & Stamatopoulos, N. (2015). Historical typewritten document recognition using minimal user interaction. In Proceedings of the 3rd Workshop on Historical Document Imaging and Processing (HIP2015) (31-38). ACM Digital Library. https://doi.org/10.1145/2809544.2809559

Recognition of low-quality historical typewritten documents can still be considered as a challenging and difficult task due to several issues i.e. the existence of faint and degraded characters, stains, tears, punch holes etc. In this paper, we explo... Read More about Historical typewritten document recognition using minimal user interaction.

Document representation refinement for precise region description (2014)
Presentation / Conference Contribution

Precise description of layout entities (content regions on a page) is crucial for all but the most trivial document analysis and recognition applications. The output of layout analysis methods and state-of-the-art OCR systems varies significantly, fr... Read More about Document representation refinement for precise region description.

Distinction between handwritten and machine-printed text based on the bag of visual words model (2014)
Journal Article
Zagoris, K., Pratikakis, I., Antonacopoulos, A., Gatos, B., & Papamarkos, N. (2014). Distinction between handwritten and machine-printed text based on the bag of visual words model. Pattern recognition, 47(3), 1051-1062. https://doi.org/10.1016/j.patcog.2013.09.005

In a variety of documents, ranging from forms to archive documents and books with annotations, machine printed and handwritten text may coexist in the same document image, raising significant issues within the recognition pipeline. It is, therefore,... Read More about Distinction between handwritten and machine-printed text based on the bag of visual words model.

The IMPACT dataset of historical document images (2013)
Presentation / Conference Contribution

Representative and comprehensive datasets are a prerequisite for any research activity, from studying specific types of problems through training of algorithms to evaluating results of actual implementations. This paper describes an invaluable resour... Read More about The IMPACT dataset of historical document images.

The significance of reading order in document recognition and its evaluation (2013)
Presentation / Conference Contribution

Reading order detection and representation is an important task in many digitisation scenarios involving the preservation of the logical structure of a document. The corresponding need for the evaluation of reading order results generated by layout a... Read More about The significance of reading order in document recognition and its evaluation.

Aletheia - An advanced document layout and text ground-truthing system for production environments (2011)
Presentation / Conference Contribution

Large-scale digitisation has led to a number of new possibilities with regard to adaptive and learning based methods in the field of Document Image Analysis and OCR. For ground truth production of large corpora, however, there is still a gap in terms... Read More about Aletheia - An advanced document layout and text ground-truthing system for production environments.