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Apostolos Antonacopoulos

Apostolos Antonacopoulos

Room 211, Newton Building

E-mail: A.Antonacopoulos (append "@primaresearch.org")

http://www.primaresearch.org/people/aa

School of Computing, Science and Engineering
Newton Building
University of Salford
Greater Manchester
M5 4WT
United Kingdom

Tel: +44-(0)161-295 2653 (direct)


Apostolos Antonacopoulos Antonacopoulos leads the Pattern Recognition and Image Analysis (PRImA) research Lab at the School of Computing, Science and Engineering at the University of Salford, UK where he currently holds the post of Senior Lecturer. He received his PhD from the University of Manchester, Institute of Science and Technology (UMIST), UK in 1995. From 1995 to 2004 he worked as Lecturer in the Department of Computer Science at the University of Liverpool where he founded PRImA. In 2005, he received the IAPR/ICDAR Young Investigator Award for "Outstanding service to the ICDAR community and his innovative research in historical document processing applications".

Dr Antonacopoulos has worked and published extensively on various problems in Document Analysis and Understanding (Image Enhancement, Segmentation, Recognition, Performance Evaluation) as well as on other applications of Pattern Recognition and Image Analysis. He has co-edited the first Special Issue (IJDAR) on Historical Document Analysis as well as the first book on Web Document Analysis. He is a member of the Editorial Boards of the International Journal on Document Analysis and Recognition and of the Electronic Letters on Computer Vision and Image Analysis.

He is currently serving as the Chair of the IAPR Education Committee (2010-2012). In 2008-2010 he served as the 1st Vice President of the IAPR and prior to that he chaired or served as a member of a number of IAPR and other committees. He has given a number of invited talks and tutorials and is holding engagements as a technical advisor to libraries and archives, among which are the British Library and the Wellcome Trust archives. He has been active in the organisation of conferences and workshops and is a member of the programme committees of most conferences in his field. He has significant experience in leading and participating in national, European (FP7 and earlier) and industry-sponsored projects. Current significant project involvement includes the €12M IMPACT EU-funded project (extraction and recognition of text from historical documents) and the €4M Europeana Newspapers EU-Funded project (extraction and recognition of text in newspapers for the European Digital Library).


Research Interests

  • Pattern Recognition
  • Image Analysis
  • Document Image Analysis and Understanding
  • Digital Restoration of Old and Historical Documents
  • Document Conversion for Digital Libraries and Archives
  • Web Document Analysis
  • Human Interactive Proofs (HIPs and CAPTCHAs)

Professional Activities

  • 1st Vice President, International Association for Pattern Recognition (IAPR)
  • Editorial Board member, International Journal of Document Analysis and Recognition
  • Editorial Board member, Electronic Letters on Computer Vision and Image Analysis
  • Chair, IAPR Conferences & Meetings Committee(2006-2008)
  • Chair, IAPR Education Committee (2004-2006)
  • Vice-Chair, IAPR TC-11 (Reading Systems)(2004-2008)
  • Member, IAPR Conferences & Meetings Committee (2002-2006)
  • Member, IAPR Quality Assurance (conferences and publications) Task Force (2004-2006)
  • Chair, ACM DocEng2010
  • Program Co-Chair, ICDAR2009
  • Publications Chair, ICDAR2003
  • Publicity Chair, ICFHR2010
  • Tutorials and Demos Chair, ICFHR2008
  • Member, ICDAR Advisory Board
  • Program Committee member, ICDAR2007, ICDAR2005, ICDAR2003
  • Program Committee member, SPIE DRRXVII - EI2010,SPIE DRRXVI - EI2009, SPIE DRRXV - EI2008, SPIE DRRXIV - EI2007, SPIE DRRXIII - EI2006, SPIE DRRXII - EI2005, SPIE DRRXI - EI2004
  • Program Committee member, ICPR2008, ICPR2006, ICPR2004
  • Program Committee member, IAPR DAS2010, IAPR DAS2008, IAPR DAS2006, IAPR DAS2004, IAPR DAS2002, IAPR DAS2000
  • Program Committee member, ACM DocEng2009, ACM DocEng2008,ACM DocEng2007, ACM DocEng2006, ACM DocEng2005, ACM DocEng2004, ACM DocEng2003
  • Program Committee member, CAIP2009
  • Program Committee member, ACM SAC2009, ACM SAC2007, ACM SAC2006, ACM SAC2005, ACM SAC2004
  • Program Committee member, DLIA2003, DLIA2001, DLIA'99
  • Program Committee member, ICIS2002
  • Program Committee member, IASPR2001


Publications for Apostolos Antonacopoulos

Web Document Analysis: Challenges and Opportunities

A. Antonacopoulos, J. Hu (Eds.)

Series in Machine Perception and Artificial Intelligence, World Scientific Publishing Company, November 2003, ISBN: 978-981-238-582-6

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Proceedings of the 2010 ACM Symposium on Document Engineering (DocEng2010)

A. Antonacopoulos, M. J. Gormish, R. Ingold (Eds.)

288 pages, ACM, September 21-24, 2010, ISBN: 978-1-4503-0231-9


Web Document Analysis II: Proceedings of the 2nd International Workshop on Web Document Analysis

A. Antonacopoulos, J. Hu (Eds.)

PRImA, 2003, ISBN: 0-9541148-1-7


Proceedings of the 7th International Conference on Document Analysis and Recognition (ICDAR2003)

A. Antonacopoulos (Ed.)

1304 pages, 2 volumes, IEEE Computer Society Press, August 2003, ISBN: 0-7695-1960-1


Web Document Analysis: Proceedings of the 1st International Workshop on Web Document Analysis

A. Antonacopoulos, J. Hu (Eds.)

PRImA, 2001, ISBN: 0-9541148-0-9


Visual Representation of Text in Web Documents and Its interpretation

D. Karatzas, A. Antonacopoulos

in the book Studies in Multidisciplinarity: Multidisciplinary Approaches to Visual Representations and Interpretations, G.R. Malcolm (Ed.), Volume 2, Elsevier, 2005, pp. 181-196

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A Fuzzy Approach to Text Segmentation in Web Images Based on Human Colour Perception

A. Antonacopoulos, D. Karatzas

in the book: Web Document Analysis: Challenges and Opportunities, A. Antonacopoulos and J. Hu (Eds.), Series in Machine Perception and Artificial Intelligence, World Scientific Publishing Company, 2003, pp. 203-222

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Automated Interpretation of Visual Representations: Extracting Textual Information from WWW Images

A. Antonacopoulos, F. Delporte

in the book Visual Representations and Interpretations, R. Paton and I. Neilson (Eds.), Springer, London, 1999, pp. 88-93

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Analysis of Scanned Braille Documents

R.T. Ritchings, A. Antonacopoulos, D. Drakopoulos

in the book Document Analysis Systems, A. Dengel and A.L. Spitz (Eds.), World Scientific Publishing Co., 1995, pp. 413-421

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Document Representation Refinement for Precise Region Description

C. Clausner, S. Pletschacher, A. Antonacopoulos

Proceedings of the First International Conference on Digital Access to Textual Cultural Heritage (DATeCH2014), Madrid, Spain, May 2014, pp. 9-13

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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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Distinction between handwritten and machine-printed text based on the bag of visual words model

K. Zagoris, I. Pratikakis, A. Antonacopoulos, B. Gatos, N. Papamarkos

Pattern Recognition, Available online 20 September 2013, ISSN 0031-3203

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The Significance of Reading Order in Document Recognition and its Evaluation

C. Clausner, S. Pletschacher, A. Antonacopoulos

Proceedings of the 12th International Conference on Document Analysis and Recognition (ICDAR2013), Washington DC, USA, August 2013, pp. 688-692

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ICDAR2013 Competition on Historical Newspaper Layout Analysis – HNLA2013

A. Antonacopoulos, C. Clausner, C. Papadopoulos, S. Pletschacher

Proceedings of the 12th International Conference on Document Analysis and Recognition (ICDAR2013), Washington DC, USA, August 2013, pp. 1486-1490

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ICDAR2013 Competition on Historical Book Recognition – HBR2013

A. Antonacopoulos, C. Clausner, C. Papadopoulos, S. Pletschacher

Proceedings of the 12th International Conference on Document Analysis and Recognition (ICDAR2013), Washington DC, USA, August 2013, pp. 1491-1495

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The IMPACT Dataset of Historical Document Images

C. Papadopoulos, S. Pletschacher, C. Clausner, A. Antonacopoulos

Proceedings of the 2013 Workshop on Historical Document Imaging and Processing (HIP2013), Washington DC, USA, August 2013, pp. 123-130

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A robust hybrid approach for text line segmentation in historical documents

C. Clausner, A. Antonacopoulos, S. Pletschacher

Proceedings of the 21st International Conference on Pattern Recognition (ICPR2012), Tsukuba, Japan, November 11-15, 2012, IEEE-CS Press, pp. 335-338

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Handwritten and Machine Printed Text Separation in Document Images using the Bag of Visual Words Paradigm

K. Zagoris, I. Pratikakis, A. Antonacopoulos, B. Gatos, N. Papamarkos

Proceedings of the 13th International Conference on Frontiers in Handwriting Recognition (ICFHR2012), Bari, Italy, September 2012, pp. 103-108

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Restoration of Arbitrarily Warped Historical Document Images Using Flow Lines

M. Rahnemoonfar, A. Antonacopoulos

Proceedings of the 11th International Conference on Document Analysis and Recognition (ICDAR2011), Beijing, China, September 2011, pp. 905-909

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Scenario Driven In-Depth Performance Evaluation of Document Layout Analysis Methods

C. Clausner, S. Pletschacher, A. Antonacopoulos

Proceedings of the 11th International Conference on Document Analysis and Recognition (ICDAR2011), Beijing, China, September 2011, pp. 1404-1408

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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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Historical Document Layout Analysis Competition

A. Antonacopoulos, C. Clausner, C. Papadopoulos, S. Pletschacher

Proceedings of the 11th International Conference on Document Analysis and Recognition (ICDAR2011), Beijing, China, September 2011, pp. 1516-1520

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Grid-Based Modelling and Correction of Arbitrarily Warped Historical Document Images for Large-Scale Digitisation

P. Yang, A. Antonacopoulos, C. Clausner, S. Pletschacher

Proceedings of the 2011 Workshop on Historical Document Imaging and Processing (HIP2011), Beijing, China, September 2011, pp. 106-111

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The PAGE (Page Analysis and Ground-Truth Elements) Format Framework

S. Pletschacher, A. Antonacopoulos

Proceedings of the 20th International Conference on Pattern Recognition (ICPR2010), Istanbul, Turkey, August 23-26, 2010, IEEE-CS Press, pp. 257-260

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A New Framework for Recognition of Heavily Degraded Characters in Historical Typewritten Documents Based on Semi-Supervised Clustering

S. Pletschacher, J. Hu, A. Antonacopoulos

Proceedings of the 10th International Conference on Document Analysis and Recognition (ICDAR2009), Barcelona, Spain, July 2009, pp. 506-510

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Word-Based Adaptive OCR for Historical Books

V. Kluzner, A. Tzadok, Y. Shimony, E. Walach, A. Antonacopoulos

Proceedings of the 10th International Conference on Document Analysis and Recognition (ICDAR2009), Barcelona, Spain, July 2009, pp. 501-505

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A Realistic Dataset for Performance Evaluation of Document Layout Analysis

A. Antonacopoulos, D. Bridson, C. Papadopoulos, S. Pletschacher

Proceedings of the 10th International Conference on Document Analysis and Recognition (ICDAR2009), Barcelona, Spain, July 2009, pp. 296-300

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ICDAR2009 Page Segmentation Competition

A. Antonacopoulos, S. Pletschacher, D. Bridson, C. Papadopoulos

Proceedings of the 10th International Conference on Document Analysis and Recognition (ICDAR2009), Barcelona, Spain, July 2009, pp. 1370-1374

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A Geometric Approach for Accurate and Efficient Performance Evaluation of Layout Analysis Methods

D. Bridson, A. Antonacopoulos

Proceedings of the 19th International Conference on Pattern Recognition (ICPR2008), Tampa, Florida, USA, December 7-11, 2008, IEEE-CS Press

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Colour text segmentation in web images based on human perception

D. Karatzas, A. Antonacopoulos

Image and Vision Computing, Volume 25, Issue 5, Elsevier, May 2007, pp. 564-577

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ICDAR2007 Handwriting Segmentation Contest

B. Gatos, A. Antonacopoulos, N. Stamatopoulos

Proceedings of the 9th International Conference on Document Analysis and Recognition (ICDAR2007), Curitiba, Brazil, September 2007, pp. 1284-1288

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Performance Analysis Framework for Layout Analysis Methods

A. Antonacopoulos, D. Bridson

Proceedings of the 9th International Conference on Document Analysis and Recognition (ICDAR2007), Curitiba, Brazil, September 2007, pp. 1258-1262

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ICDAR2007 Page Segmentation Competition

A. Antonacopoulos, B. Gatos, D. Bridson

Proceedings of the 9th International Conference on Document Analysis and Recognition (ICDAR2007), Curitiba, Brazil, September 2007, pp. 1279-1283

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Flexible Text Recovery from Degraded Typewritten Historical Documents

A. Antonacopoulos, C. Casado Castilla

Proceedings of the 18th International Conference on Pattern Recognition (ICPR2006), Hong Kong, August 20-24, 2006, IEEE-CS Press, pp. 1062-1065

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Ground Truth for Layout Analysis Performance Evaluation

A. Antonacopoulos, D. Karatzas, D. Bridson

Document Analysis Systems VII: Proceedings of the 7th International Association for Pattern Recognition (IAPR) Workshop on Document Analysis Systems (DAS2006), H. Bunke and A.L. Spitz (Eds.), Springer Lecture Notes in Computer Science, LNCS 3872, Nelson, New Zealand, February 2006, pp. 302-311

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Semantics-Based Content Extraction in Typewritten Historical Documents

A. Antonacopoulos, D. Karatzas

Proceedings of the 8th International Conference on Document Analysis and Recognition (ICDAR2005), Seoul, South Korea, August/September 2005, pp. 48-53

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ICDAR2005 Page Segmentation Competition

A. Antonacopoulos, B. Gatos, D. Bridson

Proceedings of the 8th International Conference on Document Analysis and Recognition (ICDAR2005), Seoul, South Korea, August/September 2005, pp. 75-79

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Text Extraction from Web Images Based on A Split-and-Merge Segmentation Method Using Color Perception

A. Antonacopoulos, D. Karatzas

Proceedings of the 17th International Conference on Pattern Recognition (ICPR2004), Cambridge, UK, August 23-26, 2004, IEEE-CS Press, pp. 634-637

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The Lifecycle of a Digital Historical Document: Structure and Content

A. Antonacopoulos, D. Karatzas, H. Krawczyk, B. Wiszniewski

Proceedings of the ACM Symposium on Document Engineering (DocEng2004), ACM Press, Milwaukee, Wisconsin, 28-30 October 2004, pp. 147-154

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Document Image Analysis for World War II Personal Records

A. Antonacopoulos, D. Karatzas

Proceedings of the International Workshop on Document Image Analysis for Libraries (DIAL2004), Palo Alto Research Center (PARC), USA, January 23-24, IEEE Computer Society Press, 2004, pp. 336-341

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A Complete Approach to the Conversion of Typewritten Historical Documents for Digital Archives

A. Antonacopoulos, D. Karatzas

Document Analysis Systems VI: Proceedings of the 6th International Association for Pattern Recognition (IAPR) Workshop on Document Analysis Systems (DAS2004), S. Marinai and A.R. Dengel (Eds.), Springer Lecture Notes in Computer Science, LNCS 3163, Florence, Italy, September 2004, pp. 90-101

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A Robust Braille Recognition System

A. Antonacopoulos, D. Bridson

Document Analysis Systems VI: Proceedings of the 6th International Association for Pattern Recognition (IAPR) Workshop on Document Analysis Systems (DAS2004), S. Marinai and A.R. Dengel (Eds.), Springer Lecture Notes in Computer Science, LNCS 3163, Florence, Italy, September 2004, pp. 533-545

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Two Approaches for Text Segmentation in Web Images

D. Karatzas, A. Antonacopoulos

Proceedings of the 7th International Conference on Document Analysis and Recognition (ICDAR2003), Edinburgh, UK, August 2003, pp. 131-136

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ICDAR2003 Page Segmentation Competition

A. Antonacopoulos, B. Gatos, D. Karatzas

Proceedings of the 7th International Conference on Document Analysis and Recognition (ICDAR2003), Edinburgh, UK, August 2003, pp. 688-692

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Exploiting Human Colour Perception to Segment Complex Colour Images

D. Karatzas, A. Antonacopoulos

Proceedings of Visual Representations and Interpretations (VRI2002), Liverpool, UK, September 2002


An Automated Tachograph Chart Analysis System

A. Antonacopoulos, D.P. Kennedy

Document Analysis Systems V: Proceedings of the 5th International Association for Pattern Recognition (IAPR) Workshop on Document Analysis Systems (DAS2002), D. Lopresti, J. Hu and R. Kashi (Eds.), Springer Lecture Notes in Computer Science, LNCS 2423, Princeton NJ, USA, August 2002, pp. 544-555

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A Ground-Truthing Tool for Layout Analysis Performance Evaluation

A. Antonacopoulos, H. Meng

Document Analysis Systems V: Proceedings of the 5th International Association for Pattern Recognition (IAPR) Workshop on Document Analysis Systems (DAS2002), D. Lopresti, J. Hu and R. Kashi (Eds.), Springer Lecture Notes in Computer Science, LNCS 2423, Princeton NJ, USA, August 2002, pp. 263-244

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Fuzzy Segmentation of Characters in Web Images Based on Human Colour Perception

A. Antonacopoulos, D. Karatzas

Document Analysis Systems V: Proceedings of the 5th International Association for Pattern Recognition (IAPR) Workshop on Document Analysis Systems (DAS2002), D. Lopresti, J. Hu and R. Kashi (Eds.), Springer Lecture Notes in Computer Science, LNCS 2423, Princeton NJ, USA, August 2002, pp. 295-306

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Text Extraction from Web Images Based on Human Perception and Fuzzy Inference

A. Antonacopoulos, D. Karatzas

Proceedings of the First International Workshop on Web Document Analysis (WDA2001), Seattle, USA, September 2001, pp. 35-38

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Accessing Textual Information Embedded in Internet Images

A. Antonacopoulos, D. Karatzas, J. Ortiz Lopez

Proceedings of SPIE, Internet Imaging II, San Jose, USA, January 2001, Vol. 4311, pp. 198-205

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Information Extraction from Complex Circular Charts

A. Antonacopoulos, D.P. Kennedy

Proceedings of the 6th International Conference on Document Analysis and Recognition (ICDAR2001), Seattle, USA, September 2001, pp. 784-787

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First International Newspaper Page Segmentation Contest

B. Gatos, S.L. Mantzaris, A. Antonacopoulos

Proceedings of the 6th International Conference on Document Analysis and Recognition (ICDAR2001), Seattle, USA, September 2001, pp. 1190-1194

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An Anthropocentric Approach to Text Extraction from WWW Images

A. Antonacopoulos, D. Karatzas

Proceedings of the 4th IAPR International Workshop on Document Analysis Systems (DAS2000), Rio de Janeiro, Brazil, December 2000, pp. 515-525

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A New Framework for Efficient and Flexible Analysis of the Performance of Document Image Analysis Subsystems

A. Antonacopoulos, A. Brough

Proceedings of 7th International Conference on Image Processing and its Applications (IPA1999), Manchester, UK, July 1999, pp. 417-420

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Region Description and Comparative Analysis Using a Tesseral Representation

A. Antonacopoulos, F.P. Coenen

Proceedings of 5th International Conference on Document Image Analysis and Recognition (ICDAR1999), Bangalore, India, September 1999, pp. 193-196

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Methodology for Flexible and Efficient Analysis of the Performance of Page Segmentation Algorithms

A. Antonacopoulos, A. Brough

Proceedings of 5th International Conference on Document Image Analysis and Recognition (ICDAR1999), Bangalore, India, September 1999, pp. 451-454

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Performance Analysis of Document Image Analysis Subsystems

A. Antonacopoulos, A. Brough

Digest of IEE Colloquium on Document Image Processing and Multimedia (DIPM), Manchester, UK, 1999, pp. 15/1-15/4

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Document Image Compression by Structural Decomposition

A. Antonacopoulos

Proceedings of the International Conference on Telecommunications 1998 (ICT1998), Chalkidiki, Greece, June 1998, pp. 166-171

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Identification of Airfield Runways in Synthetic Aperture Radar Images

I. Finch, A. Antonacopoulos

Proceedings of the 14th International Conference on Pattern Recognition (ICPR1998), Brisbane, Australia, August 17-20, 1998, IEEE-CS Press, Vol. II, pp. 1633-1636

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Page Segmentation Using the Description of the Background

A. Antonacopoulos

Computer Vision and Image Understanding, Special Issue on Document Analysis and Retrieval, Volume 70, Issue 3, June 1998, pp. 350-369

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A Structural Approach for Smoothing Noisy Peak-Shaped Analytical Signals

A. Antonacopoulos, A. Economou

Chemometrics and Intelligent Laboratory Systems, Volume 41, Issue 1, July 1998, pp. 31-42

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Local Skew Angle Estimation from Background Space in Text Regions

A. Antonacopoulos

Proceedings of the 4th International Conference on Document Analysis and Recognition (ICDAR1997), Ulm, Germany, August 1997, pp. 684-688

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Presenting Legislation as Hypertext

A. Antonacopoulos, T.J.M. Bench-Capon, P.E.S. Dunne

Proceedings of the Fifth National/First European Conference on Law, Computers and Artificial Intelligence: EUCLID, Exeter, April 1996, pp. 1-9, ISBN 095278730X

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Representation and Classification of Complex-Shaped Printed Regions Using White Tiles

A. Antonacopoulos, R.T. Ritchings

Proceedings of the 3rd International Conference on Document Analysis and Recognition (ICDAR1995), Montreal, Canada, August 1995, pp. 1132-1135

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Segmentation and Classification of Document Images Using the Background

A. Antonacopoulos

Proceedings of the 5th Hellenic Conference on Informatics, Athens, Greece, December 7-9, 1995, pp. 927-937 (invited contribution)


Segmentation and Classification of Document Images

A. Antonacopoulos, R.T. Ritchings

Digest of the IEE Colloquium on Document Image Processing and Multimedia Environments, The Institution of Electrical Engineers, November 1995, pp. 16/1-16/7, ISSN 0963-3308

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Flexible Page Segmentation Using the Background

A. Antonacopoulos, R.T. Ritchings

Proceedings of the IAPR 12th International Conference on Pattern Recognition (ICPR1994), Jerusalem, Israel, October 9-12, 1994, IEEE-CS Press, pp. 339-344

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Segmentation of Layouts with Non-Rectangular Regions

A. Antonacopoulos, R.T. Ritchings

Proceedings of the International Association of Pattern Recognition Workshop on Document Analysis Systems (DAS1994), Kaiserslautern, Germany, 18-20 October 1994, pp. 3-13