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Journals

  1. A. Giotis, G. Sfikas, B. Gatos and C. Nikou, "A survey of document image word spotting techniques", Pattern Recognition, Vol. 68, pp. 310-332, 2017. Download

  2. K. Zagoris, I. Pratikakis and B. Gatos, "Unsupervised Word Spotting in Historical Handwritten Document Images Using Document-Oriented Local Features", IEEE Trans. Image Processing, Vol. 26, No. 8, pp. 4032-4041, 2017. Download

  3. T. Konidaris, A. Kesidis and B. Gatos, "A segmentation-free word spotting method for historical printed documents",  Pattern Analysis and Applications, Vol. 19, Issue 4, pp. 963-976, 2016. Download

  4. K. Ntirogiannis, B. Gatos and I. Pratikakis "A combined approach for the binarization of handwritten document images", Pattern Recognition Letters, Vol. 35, pp. 3 - 15, 2014. Download

  5. K. Zagoris, I. Pratikakis, A. Antonacopoulos, B. Gatos and N. Papamarkos "Distinction between handwritten and machine-printed text based on the bag of visual words model ", Pattern Recognition , Vol. 47, Issue 3, pp. 1051-1062, 2014. Download

  6. A Papandreou, B Gatos, SJ Perantonis and I Gerardis “Efficient skew detection of printed document images based on novel combination of enhanced profiles”, International Journal on Document Analysis and Recognition (IJDAR), Vol. 17, No. 4, pp. 433-454, 2014. Download

  7. A Papandreou and B. Gatos “Slant estimation and core-region detection for handwritten Latin words”, Pattern Recognition Letters, Vol. 35, pp. 16-22, 2014. Download

  8. K. Ntirogiannis, B. Gatos and I. Pratikakis, "Performance Evaluation Methodology for Historical Document Image Binarization", IEEE Transactions on Image Processing, Vol. 22, No. 2,  pp 595 -609, 2013. Download

  9. M. Anthimopoulos, B. Gatos, I. Pratikakis, “Detection of Artificial and Scene Text in Images and Video Frames”, Pattern Analysis and Applications, Vol. 16, No. 3, pp. 431-446, 2013. Download

  10. N. Stamatopoulos, B. Gatos and I. Pratikakis, “Performance Evaluation Methodology for Document Image Dewarping Techniques”, IET Image Processing, Vol. 6, No. 6, pp. 738-745, 2012. Download

  11. B. Gatos, N. Stamatopoulos, G. Louloudis, “ICDAR2009 handwriting segmentation contest”, International Journal on Document Analysis and Recognition (IJDAR), special issue on performance evaluation, Vol.14, No. 1, pp. 25-33, 2011. Download

  12. B. Gatos, K. Ntirogiannis, I. Pratikakis, “DIBCO 2009: document image binarization contest”, International Journal on Document Analysis and Recognition (IJDAR), special issue on performance evaluation, Vol.14, No. 1, pp. 35-44, 2011. Download

  13. N. Stamatopoulos, B. Gatos, I. Pratikakis and S.J. Perantonis, “Goal-oriented Rectification of Camera-Based Document Images”, IEEE Transactions on Image Processing, Vol. 20, No. 4, pp. 910-920, 2011. Download

  14. A. Kesidis, E. Galiotou, B. Gatos, I. Pratikakis, “A word spotting framework for historical machine-printed documents”, International Journal on Document Analysis and Recognition (IJDAR), vol. 14, no. 2, pp. 131-144, 2011. Download

  15. G. Vamvakas, B. Gatos, S. J. Perantonis, "Handwritten character recognition through two-stage foreground sub-sampling", Pattern Recognition, Vol. 43, Issue 8, pp.  2807-2816, 2010.  Download

  16. M. Anthimopoulos, B. Gatos, I. Pratikakis, "A two-stage scheme for text detection in video images", Image and Vision Computing, Vol. 28 , Issue 9, pp. 1413-1426, 2010. Download

  17. N. Nikolaou, M. Makridis, B. Gatos, N. Stamatopoulos, N. Papamarkos, "Segmentation of historical machine-printed documents using Adaptive Run Length Smoothing and skeleton segmentation paths", Image and Vision Computing, Vol. 28 , Issue 4, pp. 590-604, 2010. Download

  18. N. Stamatopoulos, B. Gatos, S. J. Perantonis, "A method for combining complementary techniques for document image segmentation", Pattern Recognition, Vol. 42, Issue 12, pp.  3158-3168, 2009. Download 

  19. G. Louloudis, B. Gatos, I. Pratikakis, C. Halatsis, "Text line and word segmentation of handwritten documents", Pattern Recognition, Vol. 42, Issue 12, pp.  3169-3183, 2009. Download

  20. G. Louloudis, B. Gatos, I. Pratikakis, C. Halatsis, "Text line detection in handwritten documents", Pattern Recognition, Vol. 41, Issue 12, pp. 3758-3772, 2008. Download

  21. K. Ntzios, B. Gatos, I. Pratikakis, T. Konidaris and S.J. Perantonis, "An Old Greek Handwritten OCR System based on an Efficient Segmentation-free Approach", International Journal on Document Analysis and Recognition (IJDAR), special issue on historical documents, Vol. 9, No. 2-4, pp. 179-192, 2007. Download

  22. T. Konidaris, B. Gatos, K. Ntzios, I. Pratikakis, S. Theodoridis and S. J. Perantonis, "Keyword-Guided Word Spotting in Historical Printed Documents Using Synthetic Data and User feedback", International Journal on Document Analysis and Recognition (IJDAR), special issue on historical documents, Vol. 9, No. 2-4, pp. 167-177, 2007. Download

  23. B. Gatos, I. Pratikakis and S. J. Perantonis, "Adaptive Degraded Document Image Binarization", Pattern Recognition, Vol. 39, pp. 317-327, 2006. Download

  24. B. Gatos, K. Ntzios, I. Pratikakis, S. Petridis, T. Konidaris and S. J. Perantonis, "An Efficient Segmentation-free Approach to Assist Old Greek Handwritten Manuscript OCR ", Pattern Analysis and Applications (PAA), Vol. 8, Num. 4, pp. 305-320, 2006. Download.

  25. I. Pratikakis, Ι. Vanhamel, Η., Sahli, B. Gatos and S. Perantonis, "Unsupervised watershed-driven region-based image retrieval", IEE Vision Image and Signal Processing, Special Issue on Knowledge-based digital media processing, vol. 153, Issue 3, pp. 313-322, 2006. Download

  26. S.J. Perantonis, B. Gatos, K. Ntzios, I. Pratikakis, I. Vrettaros, A. Drigas, C. Emmanouilidis, A. Kesidis and D. Kalomirakis, "Digitization, Processing and Recognition of Old Greek Manuscripts (The  D- SCRIBE Project)", International Journal Information Theories & Applications (IJ ITA), Vol. 11, No 3, pp.232-240, 2004. Download

  27. S.J. Perantonis, B. Gatos, K. Ntzios, I. Pratikakis, I. Vrettaros, A.S. Drigas, C. Emmanouilidis, A. Kesidis, D. Kalomirakis, "A System for Processing and Recognition of Old Greek Manuscripts (The D-SCRIBE Project)", WSEAS Transactions on Computers, Issue 6, Volume 3, pp. 2049-2057, 2004. Download

  28. B. Gatos, N. Papamarkos, I. Andreadis and S. J. Perantonis, "Fast Implementation of Morphological Operations Using Image Block Decomposition", International Journal of Image and Graphics (IJIG), Vol. 4, No. 2, pp. 183-202, 2004. Download

  29. B. Gatos, S.L. Mantzaris, S.J. Perantonis and A. Tsigris, "Automatic page analysis for the creation of a digital library from newspaper archives", International Journal on Digital Libraries (IJODL), Vol. 3(1), pp. 77-84, 2000. Download

  30. S. J. Perantonis, B. Gatos and N. Papamarkos, "Block decomposition and segmentation for fast Hough transform evaluation", Pattern Recognition, Vol. 32(5), pp. 811-824, 1999. Download

  31. B. Gatos, N. Papamarkos and C. Chamzas, "A binary tree based OCR technique for machine printed characters", Engineering Applications of Artificial Intelligence, Vol. 10, No. 4, pp. 403-412, 1997. Download

  32. B. Gatos, N. Papamarkos and C. Chamzas, "Using curvature features in a multiclassifier OCR system", Engineering Applications of Artificial Intelligence, Vol. 10, No. 2, pp. 213-224, 1997. Download 

  33. B. Gatos, N. Papamarkos and C. Chamzas, "Skew detection and text line position determination in digitized documents", Pattern Recognition, Vol. 30, No. 9, pp. 1505-1519, 1997. Download

  34. B. Gatos, S. J. Perantonis and N. Papamarkos, "Accelerated Hough transform using rectangular image decomposition", Electronics Letters, Vol. 32, No. 8, pp. 730-732, 1996. Download

  35. N. Papamarkos and B. Gatos, "A new approach for multilevel threshold selection", Computer Vision, Graphics, and Image Processing - Graphical Models and Image Processing, Vol. 56, No. 5, pp. 357-370, Sept. 1994. Download

Conferences

  1. G. Sfikas, G. Retsinas and B. Gatos, "A PHOC Decoder for Lexicon-Free Handwritten Word Recognition", 14th International Conference on Document Analysis and Recognition (ICDAR 2017), 2017.

  2. G. Retsinas, N. Stamatopoulos, G. Louloudis, G. Sfikas and B. Gatos, "Nonlinear Manifold Embedding on Keyword Spotting Using t-SNE", 14th International Conference on Document Analysis and Recognition (ICDAR 2017), 2017.

  3. I. Pratikakis, K. Zagoris, G. Barlas and B. Gatos, "ICDAR2017 Competition on Document Image Binarization (DIBCO 2017)", 14th International Conference on Document Analysis and Recognition (ICDAR 2017), 2017.

  4. M. Diem, F. Kleber, S. Fiel, T. Grüning and B. Gatos, "cBAD: ICDAR2017 Competition on Baseline Detection", 14th International Conference on Document Analysis and Recognition (ICDAR 2017), 2017.

  5. S. Fiel, F. Kleber, M. Diem, V. Christlein, G. Louloudis, S. Nikos and B. Gatos, "ICDAR2017 Competition on Historical Document Writer Identification (Historical-WI)", 14th International Conference on Document Analysis and Recognition (ICDAR 2017), 2017.

  6. G. Sfikas, B. Gatos and C.Nikou, "SemiCCA: A New Semi-Supervised Probabilistic CCA Model for Keyword Spotting", International Conference on Image processing (ICIP 2017), Beijing, China, September 2017. Download

  7. G. Retsinas, G. Sfikas, B. Gatos, "Transferable Deep Features for Keyword Spotting", International Workshop on Computational Intelligence for Multimedia Understanding, held in conjunction with the 25th European Signal Processing Conference (EUSIPCO), Kos, Greece, September 2017. Download

  8. B. Gatos, G. Louloudis, N. Stamatopoulos and G. Sfikas, "Historical Document Processing", ACM Symposium on Document Engineering (DocEng'17) tutorial, pp. 1 - 2, 2017. Download

  9. G. Sfikas, G. Retsinas and B. Gatos, "Zoning Aggregated Hypercolumns for Keyword Spotting", 15th International Conference on Frontiers in Handwriting Recognition (ICFHR’16), pp. 283-288, 2016. Download

  10. I. Pratikakis, K. Zagoris, B. Gatos, J. Puigcerver, A.H. Toselli and E. Vidal, "ICFHR2016 Handwritten Keyword Spotting Competition (H-KWS 2016)", 15th International Conference on Frontiers in Handwriting Recognition (ICFHR’16), pp. 613-618, 2016. Download

  11. I. Pratikakis, K. Zagoris, G. Barlas and B. Gatos, "ICFHR2016 Handwritten Document Image Binarization Contest (H-DIBCO 2016)", 15th International Conference on Frontiers in Handwriting Recognition (ICFHR’16), pp. 619-623, 2016. Download

  12. G. Sfikas, G. Louloudis, N. Stamatopoulos and B. Gatos, "Bayesian mixture models on connected components for Newspaper article segmentation", ACM Symposium on Document Engineering (DocEng'16), pp. 143 - 146, 2016. Download

  13. G. Retsinas, G. Louloudis, N. Stamatopoulos and B. Gatos, "Efficient Document Image Segmentation Representation by Approximating Minimum-Link Polygons", 12th IAPR International Workshop on Document Analysis Systems (DAS’16), pp. 293 - 298, 2016. Download

  14. G. Louloudis, G. Sfikas, N. Stamatopoulos and B. Gatos, "Word Segmentation Using the Student’s-t Distribution", 12th IAPR International Workshop on Document Analysis Systems (DAS’16), pp. 78 - 83, 2016. Download

  15. V. Katsouros, V. Papavassiliou, F. Simistira and B. Gatos, "Recognition of Greek Polytonic on Historical Degraded Texts Using HMMs", 12th IAPR International Workshop on Document Analysis Systems (DAS’16), pp. 346-351, 2016. Download

  16. A. Papandreou, B. Gatos and K. Zagoris, "An Adaptive Zoning Technique for Word Spotting Using Dynamic Time Warping", 12th IAPR International Workshop on Document Analysis Systems (DAS’16), pp. 387 - 392, 2016. Download

  17. G. Retsinas, G. Louloudis, N. Stamatopoulos and B. Gatos, "Keyword Spotting in Handwritten Documents Using Projections of Oriented Gradients", 12th IAPR International Workshop on Document Analysis Systems (DAS’16), pp. 411 - 416, 2016. Download

  18. B. Gatos, N. Stamatopoulos, G. Louloudis, G. Sfikas, G. Retsinas, F. Simistira, V. Papavassiliou and V. Katsouros, "GRPOLY-DB: An Old Greek Polytonic Document Image Database", 13th International Conference on Document Analysis and Recognition (ICDAR 2015), pp. 646 - 650, 2015. Download

  19. A. Giotis, G. Sfikas, C. Nikou and B. Gatos, "Shape-based Word Spotting in Handwritten Document Images", 13th International Conference on Document Analysis and Recognition (ICDAR 2015), pp. 561 - 565, 2015. Download

  20. G. Retsinas, B. Gatos, N. Stamatopoulos and G. Louloudis, "Isolated Character Recognition using Projections of Oriented Gradients", 13th International Conference on Document Analysis and Recognition (ICDAR 2015), pp. 336 - 340, 2015. Download

  21. G. Sfikas, A. Giotis, G. Louloudis and B. Gatos, "Using Attributes for Word Spotting and Recognition in Polytonic Greek Documents", 13th International Conference on Document Analysis and Recognition (ICDAR 2015), pp. 686 - 690, 2015. Download

  22. F. Simistira, A. Hassan, V. Papavassiliou, B. Gatos, V. Katsouros and M. Liwicki, "Recognition of Historical Greek Polytonic Scripts Using LSTM Networks", 13th International Conference on Document Analysis and Recognition (ICDAR 2015), pp. 766 - 770, 2015. Download

  23. N. Stamatopoulos, G. Louloudis and B. Gatos, "Goal-Oriented Performance Evaluation Methodology for Page Segmentation Techniques", 13th International Conference on Document Analysis and Recognition (ICDAR 2015), pp. 281 - 285, 2015. Download

  24. G. Retsinas, B. Gatos, A. Antonacopoulos, G. Louloudis and N. Stamatopoulos, "Historical Typewritten Document Recognition Using Minimal User Interaction", 3rd International Workshop on Historical Document Imaging and Processing (HIP 2015), pp. 31 - 38, 2015. Download

  25. Konstantinos Zagoris, Ioannis Pratikakis and Basilis Gatos, "A Framework for Efficient Transcription of Historical Documents Using Keyword Spotting", 3rd International Workshop on Historical Document Imaging and Processing (HIP 2015), pp. 9 - 14, 2015. Download

  26. B. Gatos, N. Stamatopoulos, G. Louloudis and S. Perantonis “H-DocPro: a document image processing platform for historical documents”, First International Conference on Digital Access to Textual Cultural Heritage (DATECH’14), pp. 131-136, 2014. Download

  27. A Papandreou, B Gatos, G Louloudis “An adaptive zoning technique for efficient word retrieval using dynamic time warping”, First International Conference on Digital Access to Textual Cultural Heritage (DATECH’14), pp. 147-152, 2014. Download

  28. B. Gatos, G. Louloudis, T. Causer, K. Grint, V. Romero, J. A. Sánchez, A. Toselli, E. Vidal “Ground-Truth Production in the Transcriptorium Project”, 11th IAPR International Workshop on Document Analysis Systems (DAS’14), pp. 237-241, 2014. Download

  29. K. Ntirogiannis, B. Gatos and I. Pratikakis "ICFHR2014 Competition on Handwritten Document Image Binarization (H-DIBCO 2014)", 14th International Conference on Frontiers in Handwriting Recognition (ICFHR’14), pp. 809-813, 2014. Download

  30. I. Pratikakis, K. Zagoris, B. Gatos, G. Louloudis and N. Stamatopoulos "ICFHR 2014 Competition on Handwritten KeyWord Spotting (H-KWS 2014)", 14th International Conference on Frontiers in Handwriting Recognition (ICFHR’14), pp. 814-819, 2014. Download

  31. K. Zagoris, I. Pratikakis and B. Gatos "Segmentation-based Historical Handwritten Word Spotting using Document-Specific Local Features", 14th International Conference on Frontiers in Handwriting Recognition (ICFHR’14), pp. 9-14, 2014. Download

  32. N. Stamatopoulos, G. Louloudis and B. Gatos “A Novel Transcript Mapping Technique for Handwritten Document Images”, 14th International Conference on Frontiers in Handwriting Recognition (ICFHR'14), pp. 41-46, 2014. Download

  33. B. Gatos, G. Louloudis and N. Stamatopoulos “Segmentation of Historical Handwritten Documents into Text Zones and Text Lines”, 14th International Conference on Frontiers in Handwriting Recognition (ICFHR'14), pp. 464-469, 2014. Download

  34. I. Pratikakis, B. Gatos and K. Ntirogiannis, “ICDAR 2013 document image binarization contest (DIBCO 2013)”,  12th International Conference on Document Analysis and Recognition (ICDAR 2013), pp. 1471 - 1476, 2013. Download

  35. A. Papandreou, B. Gatos, G. Louloudis and N. Stamatopoulos “ICDAR 2013 Document Image Skew Estimation Contest (DISEC 2013)”, 12th International Conference on Document Analysis and Recognition (ICDAR 2013), pp. 1444 - 1448, 2013. Download

  36. N. Stamatopoulos, B. Gatos, G. Louloudis, U. Pal and A. Alaei, “ICDAR 2013 Handwriting Segmentation Contest“, 12th International Conference on Document Analysis and Recognition (ICDAR 2013), pp. 1402 - 1406, 2013. Download

  37. A. Papandreou and B. Gatos, “A Coarse to Fine Skew Estimation Technique for Handwritten Words”, 12th International Conference on Document Analysis and Recognition (ICDAR 2013), pp. 225 - 229, 2013. Download

  38. G. Louloudis, B. Gatos, N. Stamatopoulos and A. Papandreou, "ICDAR 2013 Competition on Writer Identification Document Analysis and Recognition", 12th International Conference on Document Analysis and Recognition (ICDAR 2013), pp. 1397 - 1401, 2013. Download

  39. J.A. Sánchez, G. Mühlberger, B. Gatos, P. Schofield, K. Depuydt, R.M. Davis and E. Vidal “TranScriptorium: a european project on handwritten text recognition”, 2013 ACM symposium on Document engineering, pp 227-228, 2013. Download

  40. G. Louloudis, B. Gatos and N. Stamatopoulos, “ICFHR2012 Competition on Writer Identification - Challenge 1: Latin/Greek Documents”, 13th International Conference on Frontiers in Handwriting Recognition (ICFHR'12), pp. 825-830, Bari, Italy, September 2012. Download

  41. I. Pratikakis, B. Gatos and K. Ntirogiannis, "ICFHR 2012 Competition on Handwritten Document Image Binarization (H-DIBCO 2012)", 13th International Conference on Frontiers in Handwriting Recognition (ICFHR'12), pp. 813-818, Bari, Italy, September 2012. Download

  42. K. Zagoris, I. Pratikakis, A. Antonacopoulos, B. Gatos and N. Papamarkos, "Handwritten and Machine Printed Text Separation in Document Images using the Bag of Visual Words Paradigm", 13th International Conference on Frontiers in Handwriting Recognition (ICFHR'12), pp. 103-108, Bari, Italy, September 2012. Download

  43. G. Louloudis, A. L. Kesidis and B. Gatos, “Efficient word retrieval using a multiple ranking combination scheme”, 10th International Workshop on Document Analysis Systems (DAS 2012), pp. 379-383, Gold Coast, Australia, March 2012. Download

  44. A. Papandreou and B. Gatos, “Word Slant Estimation Using Non-Horizontal Character Parts And Core-Region Information”, 10th International Workshop on Document Analysis Systems (DAS 2012), pp. 307-311, Gold Coast, Australia, March 2012. Download

  45. B. Gatos, G. Louloudis and N. Stamatopoulos, “Greek Polytonic OCR Based on Efficient Character Class Number Reduction”, 11th International Conference on Document Analysis and Recognition (ICDAR 2011), pp. 1155 - 1159, Beijing, China, September 2011. Download

  46. B. Gatos, A. Kesidis and A. Papandreou, “Adaptive Zoning Features for Character and Word Recognition”, 11th International Conference on Document Analysis and Recognition (ICDAR 2011), pp. 1160 - 1164, Beijing, China, September 2011. Download

  47. A. Kesidis and B. Gatos, “Efficient Cut-Off Threshold Estimation for Word Spotting Applications”, 11th International Conference on Document Analysis and Recognition (ICDAR 2011), pp. 279 - 283, Beijing, China, September 2011. Download

  48. K. Ntirogiannis, B. Gatos and I. Pratikakis, “Binarization of Textual Content in Video Frames”, 11th International Conference on Document Analysis and Recognition (ICDAR 2011), pp. 673 - 677, Beijing, China, September 2011. Download

  49. A. Papandreou and B. Gatos, “A Novel Skew Detection Technique Based on Vertical Projections”, 11th International Conference on Document Analysis and Recognition (ICDAR 2011), pp. 384 - 388, Beijing, China, September 2011. Download

  50. S. Colutto and B. Gatos,  “Efficient Word Recognition Using a Pixel-Based Dissimilarity Measure”, 11th International Conference on Document Analysis and Recognition (ICDAR 2011), pp. 1110 - 1114, Beijing, China, September 2011. Download

  51. I. Pratikakis, B. Gatos and K. Ntirogiannis, “ICDAR 2011 Document Image Binarization Contest (DIBCO 2011)”, 11th International Conference on Document Analysis and Recognition (ICDAR 2011), pp. 1506 - 1510, Beijing, China, September 2011. Download

  52. G. Louloudis, N. Stamatopoulos and B. Gatos, “ICDAR 2011 Writer Identification Contest”, 11th International Conference on Document Analysis and Recognition (ICDAR 2011), pp. 1475 - 1479, Beijing, China, September 2011. Download

  53. B. Gatos, N. Stamatopoulos and G. Louloudis, “ICFHR 2010 Handwriting Segmentation Contest”, 12th International Conference on Frontiers in Handwriting Recognition (ICFHR'10), pp. 737-742, Kolkata, India, November 2010. Download

  54. I. Pratikakis, B. Gatos, K. Ntirogiannis, “H-DIBCO 2010 – Handwritten Document Image Binarization Competition”, 12th International Conference on Frontiers in Handwriting Recognition (ICFHR'10), pp. 727-732, Kolkata, India, November 2010. Download

  55. N. Stamatopoulos, G. Louloudis and B. Gatos, “Efficient Transcript Mapping to Ease the Creation of Document Image Segmentation Ground Truth with Text-Image Alignment”, 12th International Conference on Frontiers in Handwriting Recognition (ICFHR'10), pp. 226-231, Kolkata, India, November 2010. Download

  56. N. Stamatopoulos, B. Gatos and T. Georgiou, “Page Frame Detection for Double Page Document Images”, 9th International Workshop on Document Analysis Systems (DAS'10), pp. 401-408, Boston, MA, USA, June 2010. Download

  57. G. Vamvakas, N. Stamatopoulos, B Gatos and S.J. Perantonis, “Automatic Unsupervised Parameter Selection for Character Segmentation”, 9th International Workshop on Document Analysis Systems (DAS'10), pp. 409-415, Boston, MA, USA, June 2010. Download

  58. B. Gatos, N. Stamatopoulos and G. Louloudis, "ICDAR2009 Handwriting Segmentation Contest", 10th International Conference on Document Analysis and Recognition (ICDAR'09), pp. 1393-1397, Barcelona, Spain, July 2009. Download

  59. B. Gatos, K. Ntirogiannis and I. Pratikakis, "ICDAR 2009 Document Image Binarization Contest (DIBCO 2009)", 10th International Conference on Document Analysis and Recognition (ICDAR'09), pp. 1375-1382, Barcelona, Spain, July 2009. Download

  60. B. Gatos and I. Pratikakis, "Segmentation-free Word Spotting in Historical Printed Documents", 10th International Conference on Document Analysis and Recognition (ICDAR'09), pp. 271-275, Barcelona, Spain, July 2009. Download

  61. G. Vamvakas, B. Gatos and S. J. Perantonis, "A Novel Feature Extraction and Classification Methodology for the Recognition of Historical Documents", 10th International Conference on Document Analysis and Recognition (ICDAR'09), pp. 491-495, Barcelona, Spain, July 2009. Download

  62. A. Nicolaou and B. Gatos, "Handwritten Text Line Segmentation by Shredding Text into its Lines", 10th International Conference on Document Analysis and Recognition (ICDAR'09), pp. 626-630, Barcelona, Spain, July 2009. Download

  63. G. Louloudis, N. Stamatopoulos and B. Gatos, "A Novel Two Stage Evaluation Methodology for Word Segmentation Techniques", 10th International Conference on Document Analysis and Recognition (ICDAR'09), pp. 686-690, Barcelona, Spain, July 2009. Download

  64. N. Stamatopoulos, B. Gatos and I. Pratikakis, "A Methodology for Document Image Dewarping Techniques Performance Evaluation", 10th International Conference on Document Analysis and Recognition (ICDAR'09), pp. 956-960, Barcelona, Spain, July 2009. Download

  65. K. Ntirogiannis, B. Gatos and I. Pratikakis, "A Modified Adaptive Logical Level Binarization Technique for Historical Document Images", 10th International Conference on Document Analysis and Recognition (ICDAR'09), pp. 1171-1175, Barcelona, Spain, July 2009. Download

  66. N. Stamatopoulos, G. Louloudis and B. Gatos, "A comprehensive evaluation methodology for noisy historical document recognition techniques", 3rd  Workshop on Analytics for Noisy Unstructured Text Data (AND'09), pp. 47-54, Barcelona, Spain, July 2009. Download 

  67. A. Kesidis, E. Galiotou, B. Gatos, A. Lampropoulos, I. Pratikakis, I. Manolessou and A. Ralli, "Accessing the content of Greek historical documents", 3rd  Workshop on Analytics for Noisy Unstructured Text Data (AND'09), pp. 55-62, Barcelona, Spain, July 2009. Download

  68. B. Gatos, I. Pratikakis and S. J. Perantonis, "Improved Document Image Binarization by Using a Combination of Multiple Binarization Techniques and Adapted Edge Information", 19th International Conference on Pattern Recognition (ICPR'08),  ISBN: 978-1-4244-2175-6/08, Tampa, Florida, USA, December 2008. Download

  69. B. Gatos, I. Pratikakis and S. J. Perantonis, "Efficient Binarization of Historical and Degraded Document Images", 8th International Workshop on Document Analysis Systems (DAS'08), pp. 447-454, Nara, Japan, September 2008. Download

  70. N. Stamatopoulos, B. Gatos, I. Pratikakis and S. J. Perantonis, "A Two-Step Dewarping of Camera Document Images", 8th International Workshop on Document Analysis Systems (DAS'08), pp. 209-216, Nara, Japan, September 2008. Download

  71. K. Ntirogiannis, B. Gatos and I. Pratikakis, "An Objective Evaluation Methodology for Document Image Binarization Techniques", 8th International Workshop on Document Analysis Systems (DAS'08), pp. 217-224, Nara, Japan, September 2008. Download

  72. G. Vamvakas, B. Gatos, N. Stamatopoulos, and S.J.Perantonis, "A Complete Optical Character Recognition Methodology for Historical Documents", 8th International Workshop on Document Analysis Systems (DAS'08), pp. 525-532, Nara, Japan, September 2008. Download

  73. M. Anthimopoulos, B. Gatos, and I. Pratikakis, "A Hybrid System for Text Detection in Video Frames", 8th International Workshop on Document Analysis Systems (DAS'08), pp. 286-292, Nara, Japan, September 2008. Download

  74. T. Konidaris, B. Gatos, S. J. Perantonis and A. Kesidis, "Keyword Matching in Historical Machine-Printed Documents Using Synthetic Data,Word Portions and Dynamic TimeWarping", 8th International Workshop on Document Analysis Systems (DAS'08), pp. 539-545, Nara, Japan, September 2008. Download

  75. N. Stamatopoulos, B. Gatos and S. J. Perantonis, "A Method for Combining Complementary Techniques for Document Image Segmentation", 11th International Conference on Frontiers in Handwriting Recognition (ICFHR'08), pp. 235-240, Montreal, Canada, August 2008. Download

  76. G. Louloudis, B. Gatos, I. Pratikakis and C. Halatsis, "Line and Word Segmentation of Handwritten Documents", 11th International Conference on Frontiers in Handwriting Recognition (ICFHR'08), pp. 247-252, Montreal, Canada, August 2008. Download

  77. K. Ntirogiannis, B. Gatos and I. Pratikakis, "An Objective Evaluation Methodology for Handwritten Image Document Binarization Techniques", 11th International Conference on Frontiers in Handwriting Recognition (ICFHR'08), pp. 586-591, Montreal, Canada, August 2008. Download

  78. G. Vamvakas, B. Gatos and S. J. Perantonis, "Hierarchical Classification of Handwritten Characters based on Novel Structural Features", 11th International Conference on Frontiers in Handwriting Recognition (ICFHR'08), pp. 535-539, Montreal, Canada, August 2008. Download

  79. B. Gatos, A. Antonacopoulos and N. Stamatopoulos, "ICDAR2007 Handwriting Segmentation Contest", 9th International Conference on Document Analysis and Recognition (ICDAR'07), pp. 1284-1288, Curitiba, Brazil, September 2007. Download

  80. A. Antonacopoulos, B. Gatos and D. Bridson, "ICDAR2007 Page Segmentation Competition", 9th International Conference on Document Analysis and Recognition (ICDAR'07), pp. 1279-1283, Curitiba, Brazil, September 2007. Download

  81. B. Gatos, I. Pratikakis and K. Ntirogiannis, "Segmentation Based Recovery of Arbitrarily Warped Document Images", 9th International Conference on Document Analysis and Recognition (ICDAR'07), pp. 989-993, Curitiba, Brazil, September 2007. Download

  82. M. Makridis, N. Nikolaou and B. Gatos, "An Efficient Word Segmentation Technique for Historical and Degraded Machine-Printed Documents", 9th International Conference on Document Analysis and Recognition (ICDAR'07), pp. 178-182, Curitiba, Brazil, September 2007. Download

  83. G. Louloudis, B. Gatos and C. Halatsis, "Text Line Detection in Unconstrained Handwritten Documents Using a Block-Based Hough Transform Approach", 9th International Conference on Document Analysis and Recognition (ICDAR'07), pp. 599-603, Curitiba, Brazil, September 2007. Download

  84. G. Vamvakas, B. Gatos, S. Petridis and N. Stamatopoulos, "An Efficient Feature Extraction and Dimensionality Reduction Scheme for Isolated Greek Handwritten Character Recognition", 9th International Conference on Document Analysis and Recognition (ICDAR'07), pp. 1073-1077, Curitiba, Brazil, September 2007. Download

  85. N. Stamatopoulos, B. Gatos and A. Kesidis, "Automatic Borders Detection of Camera Document Images", 2nd  International Workshop on Camera-Based Document Analysis and Recognition (CBDAR'07), pp. 71-78, Curitiba, Brazil, September 2007. Download

  86. G. Vamvakas, N. Stamatopoulos, B Gatos, I. Pratikakis and S. J. Perantonis, "Greek Handwritten Character Recognition", 11th Panhellenic Conference on Informatics (PCI 2007), pp. 343-352, Patras, Greece, May 2007. Download

  87. M. Anthimopoulos, B. Gatos and I. Pratikakis, "Text detection in video frames", 11th Panhellenic Conference on Informatics (PCI 2007), pp. 361-370, Patras, Greece, May 2007. Download

  88. A. Kesidis and B. Gatos, "A Robust Image Watermarking Technique Based on Spectrum Analysis and Pseudorandom Sequences", 2nd International Conference on Computer Vision Theory and Applications (VISAPP 2007), pp. 121-126, Barcelona, Spain, March, 2007. Download

  89. M. Anthimopoulos, B. Gatos and I. Pratikakis, "Multiresolution Text Detection in Video Frames", 2nd International Conference on Computer Vision Theory and Applications (VISAPP 2007), pp. 161-166, Barcelona, Spain, March 2007. Download

  90. M. Anthimopoulos, B. Gatos, I. Pratikakis, S. J. Perantonis, "Detecting Text in Video Frames", The Fourth IASTED International Conference on Signal Processing, Pattern Recognition, and Applications (SPPRA 2007), ISBN: 978-0-88986-646-1, pp. 39-44, Innsbruck, Austria, February 2007. Download

  91. B. Gatos and K. Ntirogiannis, "Restoration of Arbitrarily Warped Document Images Based on Text Line and Word Detection", The Fourth IASTED International Conference on Signal Processing, Pattern Recognition, and Applications (SPPRA 2007), ISBN: 978-0-88986-646-1, pp. 203-208, Innsbruck, Austria, February 2007. Download

  92. G. Vamvakas, B. Gatos, I. Pratikakis, N. Stamatopoulos, A. Roniotis and S.J. Perantonis, "Hybrid Off-Line OCR for Isolated Handwritten Greek Characters", The Fourth IASTED International Conference on Signal Processing, Pattern Recognition, and Applications (SPPRA 2007), ISBN: 978-0-88986-646-1, pp. 197-202, Innsbruck, Austria, February 2007. Download

  93. B. Gatos, I. Pratikakis, A.L. Kesidis and S.J. Perantonis, "Efficient Off-Line Cursive Handwritten Word Recognition", 10th International Workshop on Frontiers in Handwriting Recognition (IWFHR 2006),  pp. 121-125,  La Baule, France,  October 2006. Download

  94. G. Louloudis, K. Halatsis, B. Gatos, I. Pratikakis, "A Block-Based Hough Transform Mapping for Text Line Detection in Handwritten Documents", 10th International Workshop on Frontiers in Handwriting Recognition (IWFHR 2006),  pp. 515-520, La Baule, France, October 2006. Download

  95. B. Gatos, I. Pratikakis and S.J. Perantonis, "Hybrid Off-Line Cursive Handwritten Word Recognition", 18th International Conference on Pattern Recognition (ICPR2006), pp. 998-1001, Hong Kong, August 2006. Download

  96. D. Kosmopoulos, S. Petridis, I. Pratikakis, B. Gatos, S. Perantonis, V. Karkaletsis, G. Paliouras, "Knowledge Acquisition from Multimedia Content using an Evolution Framework, 3rd. IFIP Conference on Artificial Intelligence Applications & Innovations, pp. 557-565, Athens, Greece, June 2006. Download

  97. Β. Gatos, T. Konidaris, I. Pratikakis and S. Perantonis, "A holistic methodology for keyword search in historical typewritten documents", 4th Hellenic Conference on Artificial Intelligence, Lecture Notes in Computer Science (LNCS), vol. 3955, pp. 490-493, Irakleion, Greece, May 2006. Download

  98.  I. Pratikakis, B. Gatos and Stelios C.A. Thomopoulos, "Scene categorisation using low-level visual features", International Conference on Computer Vision Theory and Applications (VISAPP06), pp. 155-160, Setubal, Portugal, Feb. 25-28, 2006.

  99. Download
  100. C. D. Spyropoulos, G. Paliouras, V. Karkaletsis, D. Kosmopoulos, I. Pratikakis, S. Perantonis, B. Gatos, "BOEMIE: Bootstrapping Ontology Evolution with Multimedia Information Extraction",  2nd European Workshop on Integration of Knowledge, Semantic and Digital Media Technologies, pp. 419-420, London, UK, November 2005. Download

  101. B. Gatos, T. Konidaris, K. Ntzios, I. Pratikakis and S. J. Perantonis, "A Segmentation-free Approach for Keyword Search in Historical Typewritten Documents", 8th International Conference on Document Analysis and Recognition (ICDAR'05), pp. 54-58, Seoul, Korea, August 2005. Download

  102. K. Ntzios, B. Gatos, I. Pratikakis, T. Konidaris and S. J. Perantonis, "An Old Greek Handwritten OCR System", 8th International Conference on Document Analysis and Recognition (ICDAR'05), pp. 64-68, Seoul, Korea, August 2005. Download

  103. A. Antonacopoulos, B. Gatos and D. Bridson, "ICDAR2005 Page Segmentation Competition", 8th International Conference on Document Analysis and Recognition (ICDAR'05), pp. 75-79, Seoul, Korea, August 2005. Download

  104. Β. Gatos, Ι. Pratikakis and Perantonis S.J. "Text detection in indoor/outdoor scene images", First International Workshop on Camera-based Document Analysis and Recognition (CBDAR'05), pp. 127-132, Seoul, Korea, August 2005. Download

  105. B. Gatos, D. Danatsas, I. Pratikakis and S. J. Perantonis, "Automatic Table Detection in Document Images", 3rd International Conference on Advances in Pattern Recognition (ICAPR'05), pp. 612-621, Path, UK, August 2005. Download

  106. B. Gatos, I. Pratikakis and S.J. Perantonis, "Towards text recognition in natural scene images", 5th International Conference on Automation and Technology (ICTA'05), pp. 354-359, Thessaloniki, Greece, 2005. Download

  107. I. Pratikakis, I. Vanhamel, H. Sahli, B. Gatos and S. Perantonis, "Object-driven content-based image retrieval", 12th International Workshop on Systems, Signals and Image Processing (IWSSIP'05), pp. 189-193, INDERSCIENCE Publishers, ISBN 0-907776-20-5, 22-24 September, Chalkida, Greece, 2005. Download

  108. I. Pratikakis, I. Vanhamel, H, Sahli, B, Gatos and S. Perantonis, "Watershed-driven region-based image retrieval", International Symposium on Mathematical Morphology, pp. 207-216, Paris, France, 2005.

  109. C.D. Spyropoulos, G. Paliouras, V. Karkaletsis, D. Kosmopoulos, I. Pratikakis, S. Perantonis, B. Gatos, "BOEMIE: bootstrapping ontology evolution with multimedia information extraction", 2nd European Workshop on the Integration of Knowledge, Semantics and Digital Media Technology (EWIMT 2005) pp. 419-420, 2005. Download

  110. I. Pratikakis, I. Vanhamel, H. Sahli, Z. Efraimidis, B. Gatos and S. Perantonis, "Unsupervised region-based image retrieval", European Workshop on the Integration of Knowledge, Semantic and Digital Media Technologies, pp. 39-46, London, UK, 2004.

  111. B. Gatos, K. Ntzios, I. Pratikakis, S. Petridis, T. Konidaris and S. J. Perantonis, "A segmentation-free recognition technique to assist old Greek handwritten manuscript OCR", IAPR Workshop on Document Analysis systems (DAS'2004), Lecture Notes in Computer Science (3163), pp. 63-74, Florence, Italy, September 2004. Download

  112. B. Gatos, I. Pratikakis and S. J. Perantonis, "An adaptive binarisation technique for low quality historical documents", IAPR Workshop on Document Analysis systems (DAS’2004), Lecture Notes in Computer Science (3163), pp. 102-113, Florence, Italy, September 2004. Download

  113. B. Gatos, I. Pratikakis and S. J. Perantonis, "Locating Text in historical collection manuscripts", 3rd Hellenic Conference on Artificial Intelligence, Lecture Notes in Artificial Intelligence (3025), pp. 476-485, Samos, Greece, May 2004. Download

  114. S. J. Perantonis, B. Gatos, V. Maragos, V. Karkaletsis and G. Petasis, "Text Area Identification in Web Images", 3rd Hellenic Conference on Artificial Intelligence, Lecture Notes in Artificial Intelligence (3025), pp. 82-92, Samos, Greece, May 2004. Download

  115. B. Gatos, N. Papamarkos and S. J. Perantonis, "Comparing Point and Block Representation in Computer Vision and Image Processing Tasks", 3rd Hellenic Conference on Artificial Intelligence, pp. 217-226, Samos, Greece, 2004. Download

  116. S. J. Perantonis, B. Gatos and V. Maragos, "A Novel Web Image Processing Algorithm for Text Area Identification that Helps Commercial OCR Engines to Improve Their Web Image Recognition Efficiency", Second International Workshop on Web Document Analysis (WDA2003), pp. 61-64, Edinburgh, Scotland, August 2003. Download

  117. A. Antonacopoulos, B. Gatos and D. Karatzas, "ICDAR 2003 Page Segmentation Competition", 7th International Conference on Document Analysis and Recognition (ICDAR'03), pp. 688-692, Edinburgh, Scotland, August 2003. Download

  118. B. Gatos and N. Papamarkos, "Applying Fast Segmentation Techniques at a Binary Image Represented by a Set of Non-Overlapping Blocks", Sixth International Conference on Document Analysis and Recognition (ICDAR'01), pp. 1147-1151, Seattle, USA, September 2001. Download

  119. B. Gatos, S. L. Mantzaris and A. Antonacopoulos, “First International Newspaper Segmentation Contest”, Sixth International Conference on Document Analysis and Recognition (ICDAR'01), pp. 1190-1194, Seattle, USA, September 2001. Download

  120. B. Gatos, S. L. Mantzaris and N. Gouraros, “An Integrated System for Creating a Digital Library from Newspaper Archives”, Digital Resources for the Humanities (DRH2001) Conference, page 37, London, U.K., July 2001. Download

  121. S. L. Mantzaris, B. Gatos and N. Gouraros, "Creating a Digital Library from Newspaper Archives", 2001 Symposium on Document Image Understanding Technology, pp. 285-287, Columbia, Maryland, April 2001.

  122. B. Gatos, N. Papamarkos, I. Andreadis and S. J. Perantonis, “Applying Morphological Transformations on a Block Represented binary Image”, Fourth International Workshop on Document Analysis Systems (DAS2000), pp. 487-495, Rio de Janeiro, Brazil, December 2000. Download

  123. B. Gatos and S. L. Mantzaris, “A novel recursive algorithm for area location using isothetic polygons”, 15th International Conference on Pattern Recognition (ICPR2000), pp. 496-499, Barcelona, Spain, September 2000. Download

  124. S. L. Mantzaris, B. Gatos, N. Gouraros and P. Tzavelis, “Integrated Search Tools for Newspaper Digital Libraries”, ACM Conference on Research and Development in Information Retrieval (SIGIR 2000), page 389, Athens, Greece, July 2000. Download

  125. B. Gatos, N. Gouraros, S. L. Mantzaris and P. Tzavelis, "A Digital Library from Newspaper Archives", demonstration at Digital Libraries 2000:The Fifth ACM Conference on Digital Libraries (DL'00), San Antonio, Texas, June 2000.

  126. S.L. Mantzaris, B. Gatos, N. Gouraros and S. J. Perantonis, “Linking Article Parts for the Creation of a Newspaper Digital Library”, Content-Based Multimedia Information Access International Conference (RIAO2000), pp. 997-1005, Paris, France, April 2000. Download

  127. B. Gatos, S. L. Mantzaris, K. V. Chandrinos, A. Tsigris and S. J. Perantonis, "Integrated Algorithms for Newspaper Page Decomposition and Article Tracking", Fifth International Conference on Document Analysis and Recognition (ICDAR'99), pp. 559-562, Bangalore, India, September 1999. Download

  128. B. Gatos, N. Gouraros, S. Mantzaris, S. Perantonis, A. Tsigris, P. Tzavelis and N. Vassilas, “A new Method for Segmenting Newspaper Articles”, Second European Conference On Research and Advanced Technology for Digital Libraries (ECDL’98), pp. 695-696, Heraklion, Crete, Greece, September 1998. Download

  129. S. Perantonis, B. Gatos and N. Papamarkos, "Image segmentation and linear feature identification using rectangular block decomposition", Third IEEE Int. Conf. On Electronics, Circuits and Systems, ICECS 96, pp. 183-186, Rodos, Greece, 1996.

  130. N. Papamarkos, J. Tzortzakis and B. Gatos, "Determination of Run-Length smoothing values for document segmentation”, Third IEEE Int. Conf. On Electronics, Circuits and Systems, ICECS 96, pp. 684-687, Rodos, Greece, 1996. Download

  131. A. Benaki, B. Gatos, E. Karamani, D. Karras, S. Perantonis, N. Basilas, H. Harou, S. Varoufakis, "A sensor driven robot arm for playing chess", 5th Hellenic Conference on Informatics – Session: Artificial Intelligence I, pp. 471-480, Athens, Greece, December 1995.

  132. B. Gatos, “Optical Character Recognition Techniques”, 5th Hellenic Conference on Informatics – Session: Ph.D. Consortium I, Athens, Greece, December 1995.

  133. B. Gatos and N. Papamarkos, " On the development of an OCR system based on curvature features", IEEE International Symposium on Industrial Electronics (ISIE'95), pp. 205-210, Athens, July 10-14,1995

  134. B. Gatos, N. Papamarkos and C. Chamzas, "Skew detection of digitized documents using cross-correlation", 5th International Conf. On Advances in Communication & Control - Telecommunications/Signal Processing in the Multimedia Era (COMCON 5), pp. 124-130, Rethymno, Greece, 1995.

  135. A. Benaki, B. Gatos, E. Karamani, D. Karras, S. Perantonis, N. Basilas and N. Gaitanis, "A Robot Hand-Eye Coordination System for 3-D Object Recognition Using Novel Neural Networks Trained with Multiview Moments", European Robotics and Intelligence Systems Conference (EURISCON '94), pp. 1692-1701, Malaga, Spain, 1994.

  136. T. Tambourantzi and B. Gatos, "A Topology-Preserving Harmony Theory Network for Optical Character Recognition", 4th International Conference on Artificial Neural Networks (ICANN '94) from the Springer Verlag LTD. London, p. 977, Sorento, Italy, May 1994.

  137. B. Gatos and N. Papamarkos, " A novel method for character recognition", Proc. of the 4th International Conf. On Advances in Communication & Control - Telecommunications/Signal Processing in the Multimedia Era (COMCON 4), pp. 493-503, Rodos, Greece, June 1993.

  138. B. Gatos, D. Karras and S. Perantonis, "Optical Character Recognition Using Novel Feature Extraction & Neural Network Classification Techniques", Proc. of the Workshop on Neural Network Application and Tools, IEEE Computer Society Press, pp. 65-72, Liverpool, UK, September 1993. Download

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 Last updated: 15-02-2018.