Return to Home Page

PUBLICATIONS

A. PhD THESIS

Pratikakis I., Watershed-driven image segmentation, PhD Thesis, Vrije Universiteit Brussel (VUB), Brussels, Belgium, January 1999.

B. EDITORIALS 

B1. T. Theoharis, I. Pratikakis and M. Spagnuolo (editors), International Journal of Computer Vision, Special issue on 3D object retrieval, 2010, Vol. 89, Numbers 2-3, Springer

B2. I. Pratikakis, T. Schreck, T. Theoharis, R. Veltkamp (editors) (2011), The Visual Computer Journal – 3DOR 2010 Special issue, 27 (11), Springer

B3. S. Biasotti, I. Pratikakis, U. Castellani, T. Schreck (editors) (2014), The Visual Computer Journal – 3DOR 2013 Special issue, 30 (11), Springer

B4. G. Lavoue, I. Pratikakis, F. Dupont, M. Ovsjanikov and M. Spagnuolo (editors) (2018), Computers and Graphics Journal – Special Section on Eurographics Workshop on 3D Object Retrieval 2017, 71:6 (2018).

B5. I. Pratikakis, and T. Theoharis (editors) (2008). Eurographics Proceedings - Workshop on 3D object retrieval, ISBN 978-3-905674-05-7, ISSN 1997-0463.

B6. I. Pratikakis, M. Spagnuolo, T. Theoharis, and R. Veltkamp (editors) (2009), Eurographics Proceedings - Workshop on 3D object retrieval, Eurographics/ACM SIGGRAPH Symposium Proceedings, ISBN: 978-3-905674-16-3

B7. M. Daoudi, T. Screck, M. Spagnuolo, I. Pratikakis, R. Veltkamp and T. Theoharis (editors) (2010), Eurographics Proceedings - Workshop on 3D object retrieval, Eurographics/ACM SIGGRAPH Symposium Proceedings, ISBN: 978-3-905674-22-4

B8. H. Laga, T. Schreck, M. Ferreira, A. Godil, I. Pratikakis and R. Veltkamp (editors) (2011), Eurographics Proceedings - Workshop on 3D object retrieval, Eurographics/ACM SIGGRAPH Symposium Proceedings, ISBN: 978-3-905674-31-6

B9. S. Biasotti, I. Pratikakis, U. Castellani, T. Schreck, A. Godil, and R. Veltkamp (editors) (2013), Eurographics Proceedings - Workshop on 3D object retrieval, Eurographics Symposium Proceedings, ISBN: 978-3-905674-44-6

B10. B. Gatos, V. Katsouros and I. Pratikakis (editors) (2014), Proceedings of the 14^th International Conference on Frontiers in Handwriting Recognition, IEEE Computer Society, Conference Publishing Services, ISBN: 978-1-4799-4334-0

B11. I. Pratikakis, M. Spagnuolo, T. Theoharis, L. Van Gool and R. Veltkamp (editors) (2015), Eurographics Proceedings - Workshop on 3D object retrieval, Eurographics Symposium Proceedings.

B12. S. Biasotti, G. Lavoue, B. Falcidieno and I. Pratikakis (editors) (2019), Eurographics Proceedings - Workshop on 3D object retrieval, Eurographics Symposium Proceedings.

C. BOOK CHAPTERS

C1.    Pratikakis I., Sahli H., and Cornelis J. (2005). 3D Multiscale watershed segmentation of MR images, Applied Medical Image Analysis Methods , Chapter 7, The Electrical Engineering and Applied Signal Processing series, L. Costaridou (Eds.), CRC Press, pp. 271-314, ISBN: 0-8493-2089-5

C2.    I. Pratikakis, I. Vanhamel, H, Sahli, B, Gatos and S. Perantonis. Content-based image retrieval: A region-driven approach, In the book “Recent advances in applied signals, systems and image processing”, Series: Signals and Communication Technology, Karras, Dimitrios A. (Ed.), ISBN: 978-1-4020-8169-9, Springer, January 2009.

C3.    I. Pratikakis, A. Bolovinou, S. Perantonis, B. Gatos (2011), Semantics extraction from images, Chapter 8, In the book “Knowledge-driven Multimedia Information Extraction and Ontology Evolution – Bridging the Semantic Gap”, Springer, pp. 50-88, ISBN: 978-3-642-20794-5. 

C4.   I. Vanhamel, I. Pratikakis and H. Sahli (2011), Scale space Representations for Greyscale and Color Images, Chapter 8, In the book “Optical and Digital Image Processing”, Cristobal, G., Schelkens, P., Thienpont, H., eds., Wiley, Chapter 8, ISBN 978-3-527-40956-3

C5.   G. Barlas, K. Zagoris and I. Pratikakis (2017), Handwritten keyword spotting – The Query by Example (QbE) case, In the book “Handwriting: Recognition, Development and Analysis”, B. L. D. Bezerra, C. Zanchettin, G. Pirlo and A. Toselli, eds., Nova Science Publishers.

D. JOURNALS

D71. Matej Vitek, Abhijit Das, Diego Rafael Lucio, Luiz Antonio Zanlorensi Jr., David Menotti, Jalil Nourmohammadi Khiarak, Mohsen Akbari Shahpar, Meysam Asgari-Chenaghlu, Farhang Jaryani, Juan E. Tapia, Andres Valenzuela, Caiyong Wang, Yunlong Wang, Zhaofeng He, Zhenan Sun, Fadi Boutros, Naser Damer, Jonas Henry Grebe, Arjan Kuijper, Kiran Raja, Gourav Gupta, Georgios Zampoukis, Lazaros Tsochatzidis, Ioannis Pratikakis, S. V. Aruna Kumar, B. S. Harish, Umapada Pal, Peter Peer and Vitomir ˇStruc (2023), Exploring Bias in Sclera Segmentation Models: A Group Evaluation Approach, IEEE Transactions on Information Forensics & Security, vol. 18, pp. 190-205, DOI 10.1109/TIFS.2022.3216468

D70. A. Chalvatzaras, I. Pratikakis, and A. Amanatiadis (2023), A Survey on Map-Based Localization Techniques for Autonomous Vehicles, IEEE Transactions on Intelligent Vehicles, Vol. 8, Issue: 2, February 2023,  doi: 10.1109/TIV.2022.3192102

D69. V. Vanian, G. Zamanakos, and I. Pratikakis (2022), ‘Improving performance of deep learning models for 3D point cloud semantic segmentation via attention mechanisms, Computers and Graphics, Elsevier, 106, 277-287.

D68. K. Zagoris, A. Amanatiadis and I. Pratikakis (2021), Word Spotting as a Service: An Unsupervised and Segmentation-Free Framework for Handwritten Documents, Journal of Imaging, MDPI, 2021, 7, 278, https://www.mdpi.com/2313-433X/7/12/278

D67. L. Tsochatzidis, S. Symeonidis, A. Papazoglou, and I. Pratikakis (2021), HTR for Greek Historical Handwritten Documents, Journal of Imaging, MDPI, 2021, 7, 260. https://doi.org/10.3390/jimaging7120260

D66. I. Papadeas, L. Tsochatzidis, A. Amanatiadis and I. Pratikakis (2021), ‘Real-Time Semantic Image Segmentation with Deep Learning for Autonomous Driving: A Survey’, Applied Sciences, MDPI, 11(19), 8802; https://doi.org/10.3390/app11198802

D65. G. Zamanakos, L. Tsochatzidis, A. Amanatiadis and I. Pratikakis (2021), ‘A comprehensive survey of LIDAR-based 3D object detection methods with deep learning for autonomous driving’, Computers and Graphics, Elsevier, 99, 153-181.

D64. L. Tsochatzidis, P. Koutla, L. Costaridou and I. Pratikakis (2021), Integrating segmentation information into CNN for breast cancer diagnosis of mammographic masses, Computer Methods and Programs in Biomedicine, Volume 200, 2021, 105913, Elsevier, ISSN 0169-2607, https://doi.org/10.1016/j.cmpb.2020.105913

D63. L. Tsochatzidis, L. Costaridou and I. Pratikakis (2019), Deep learning for breast cancer diagnosis from mammograms - A comparative study, Journal of Imaging, MDPI, 2019, 5(3), 37, https://doi.org/10.3390/jimaging5030037

D62. C. Veinidis, A. Danelakis, I. Pratikakis, and T. Theoharis (2019), Effective descriptors for human action retrieval from 3D mesh sequences, International Journal of Image and Graphics, Vol. 19, No. 3, 1950018 (34 pages), World Scientific Press.

D61. Mühlberger, G, Seaward, L, Terras, M, Ares Oliveira, S, Bosch, V, Bryan, M, Colutto, S, Déjean, H, Diem, M, Fiel, S, Gatos, B, Grüning, T, Greinoecker, A, Hackl, G, Haukkovaara, V, Heyer, G, Hirvonen, L, Hodel, T, Jokinen, M, Kahle, P, Kallio, M, Kaplan, F, Florian, K, Labahn, R, Lang, EM, Laube, S, Leifert, G, Louloudis, G, McNicholl, R, Meunier, JL, Michael, J, Mühlbauer, E, Philipp, N, Pratikakis, I, Puigcerver Pérez, J, Putz, H, Retsinas, G, Romero, V, Sablatnig, R, Sánchez, JA, Schofield, P, Sfikas, G, Sieber, C, Stamatopoulos, N, Strauß, T, Terbul, T, Toselli, AH, Ulreich, B, Villegas, M, Vidal, E, Walcher, J, Weidemann, M, Wurster, H, Zagoris, K. (2019), Transforming Scholarship in the Archives Through Handwritten Text Recognition: Transkribus as a Case Study Journal of Documentation, https://doi.org/10.1108/JD-07-2018-0114, ISSN: 0022-0418, Publication date: 24 July, 2019.

D60. C. Veinidis, I. Pratikakis, and T. Theoharis (2019), Unsupervised Human Action Retrieval using Salient Points in 3D Mesh Sequences, Multimedia Tools and Applications – Special Issue on Content-based Multimedia Indexing, Volume 78, Issue 3,  pp 2789–2814.

D59. M. Savelonas, I. Pratikakis, T. Theoharis, G. Thanellas, F. Abad and R. Bandahan (2018), Spatially sensitive statistical shape analysis for pedestrian recognition from LIDAR data, Accepted for publication to Computer Vision and Image Understanding, Elsevier.

D59. C. Veinidis, I. Pratikakis, and T. Theoharis (2018), Unsupervised Human Action Retrieval using Salient Points in 3D Mesh Sequences, Accepted for publication to Multimedia Tools and Applications – Special Issue on Content-based Multimedia Indexing.

D58. A. Danelakis, T. Theoharis, and I. Pratikakis (2018), Action unit detection in 3D facial videos with application in facial expression retrieval and recognition, Accepted for publication to Multimedia Tools and Applications, https://doi.org/10.1007/s11042-018-5699-9.

D57. K. Sfikas, T. Theoharis and I. Pratikakis (2018), Ensemble of PANORAMA-based Convolutional Neural Networks for 3D Model Classification and Retrieval, Computers and Graphics, Elsevier, 71, pp. 208-218, https://doi.org/10.1016/j.cag.2017.12.001.

D56. I. Pratikakis, M. Savelonas, P. Mavridis, G. Papaioannou, F. Arnaoutoglou and D. Rieke-Zapp (2018), Predictive Digitization of Cultural Heritage Objects, Multimedia Tools and Applications, Springer, 77:12991-13021, DOI 10.1007/s11042-017-4928-y

D55. G. Ioannakis, A. Koutsoudis, I. Pratikakis, C. Chamzas (2018), RETRIEVAL – An online performance evaluation tool for information retrieval methods, IEEE Transactions on Multimedia, vol. 20, Issue 1, pp. 119-127, DOI:  10.1109/TMM.2017.2716193.

D54. L. Tsochatzidis, K. Zagoris, N. Arikidis, A. Karahaliou, L. Costaridou and I. Pratikakis  (2017), Computer-aided diagnosis of mammographic masses based on a supervised content-based image retrieval approach, Pattern Recognition, Elsevier, Volume 71, November 2017, Pages 106-117, https://doi.org/10.1016/j.patcog.2017.05.023.

D53. K. Zagoris, I. Pratikakis, and B. Gatos (2017), Unsupervised Word Spotting in Historical Handwritten documents using Document-oriented local features, IEEE Transactions on Image Processing, vol. 26, Issue 8, pp. 4032-4041, August 2017, DOI: 10.1109/TIP.2017.2700721.

D52. P. Theologou, I. Pratikakis, and T. Theoharis (2017), Part-based 3D object retrieval via multi label optimization, Computer Vision and Image Understanding, Elsevier, vol. 160, pp. 148-157, July 2017.

D51. P. Theologou, I. Pratikakis, and T. Theoharis (2017), Unsupervised spectral mesh segmentation driven by heterogeneous graphs, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 39, Issue 2, pp. 397-410, DOI: 10.1109/TPAMI.2016.2544311.

D50. C. Veinidis, I. Pratikakis, and T. Theoharis (2016), On the retrieval of 3D mesh sequences of human actions, Multimedia Tools and Applications, Springer, 76: 2059-2085, http://dx.doi.org/10.1007/s11042-015-3137-9

D49. A. Danelakis, T. Theoharis, and I. Pratikakis (2016), A spatio-temporal wavelet-based descriptor for dynamic 3D facial expression retrieval and recognition, The Visual Computer, 32:1001-1011, Springer.

D48. M. Savelonas, I. Pratikakis and K. Sfikas (2016), Fisher encoding of differential fast point feature histograms for partial 3D object retrieval, Pattern Recognition, Elsevier, vol. 55, July 2016, pp. 114-124.

D47. A. Danelakis, T. Theoharis, and I. Pratikakis and P. Perakis (2016), An effective methodology for dynamic 3D facial expression retrieval, Pattern Recognition, Elsevier, vol. 52, pp. 174-185

D46. A. Danelakis, T. Theoharis, and I. Pratikakis (2015), A Robust Spatio-Temporal Scheme for Dynamic 3D Facial Expression Retrieval, The Visual Computer, 32:257-269, DOI 10.1007/s00371-015-1142-7

D45. Georgios Vlachopoulos, Panayiotis Korfiatis, Spyros Skiadopoulos, Alexandra Kazantzi, Christina Kalogeropoulou, Ioannis Pratikakis, and Lena Costaridou (2015), Selecting registration schemes in case of interstitial lung disease follow-up in CT: A preliminary study, Medical Physics, 42 (8), August 2015.

D44. P. Theologou, I. Pratikakis, and T. Theoharis (2015), A comprehensive overview of methodologies and performance evaluation frameworks in 3D mesh segmentation, Computer Vision and Image Understanding, Elsevier, 135, p. 49-82

D43. M. Savelonas, I. Pratikakis, and K. Sfikas (2015), An overview of partial 3D object retrieval methodologies, Multimedia Tools and Applications, vol. 74, No. 24, pp. 11783-11808, published online September 2014, Springer, DOI 10.1007/s11042-014-2267-9

D42. K. Zagoris and I. Pratikakis (2014), Text Detection on Natural Images using Mnemonic Cellular Automata, Journal of Cellular Automata, Special Issue on Cellular Automata Applications for Research and Industry, Old City Publishing, Volume 9, Issue 2-3, 2014, pp. 183-194.

D41. Konstantinos Sfikas, Ioannis Pratikakis, Michalis Savelonas, Anestis Koutsoudis and Theoharis Theoharis (2014), Partial Matching of 3D Cultural Heritage Objects using Panoramic Views, Multimedia Tools and Applications, June 2014, Springer, DOI 10.1007/s11042-014-2069-0, pp. 1-15.

D40. A. Danelakis, T. Theoharis and I. Pratikakis (2014), A Survey on Facial Expression Recognition in 3D Video Sequences, Multimedia Tools and Applications, Springer, ISSN 1380-7501, http://dx.doi.org/10.1007/s11042-014-1869-6, pp. 1-39.

D39.    P. Theologou, I. Pratikakis, and T. Theoharis (2014), A review on 3D object retrieval methodologies using a part-based representation, Computer-Aided Design and Applications (CAD&A), Vol. 11, Issue 6, pp. 670-684.

D38. K. Sfikas, T. Theoharis and I. Pratikakis (2014), Pose Normalization of 3D Models via Reflective Symmetry on Panoramic views, The Visual Computer, Springer, Vol. 30, pp. 1261-1274, (DOI) 10.1007/s00371-014-0935-4.

D37.    K. Ntirogiannis, B. Gatos and I. Pratikakis (2014), A Combined Approach for the Binarization of Handwritten Document Images, Pattern Recognition Letters, vol. 35, pp. 3-15, January 2014.

D36. K. Zagoris, I. Pratikakis, A. Antonacopoulos, N. Papamarkos and B. Gatos (2014), Distinction between handwritten and machine-printed text based on the bag of visual words model, Pattern Recognition, 47, pp. 1051 - 1062

D35. A. Koutsoudis, I. Pratikakis, C. Chamzas (2013), On 3D Object Retrieval Benchmarking, 3D Research, Springer, Vol. 4, Issue 4, December 2013

D34. K. Sfikas, T. Theoharis and I. Pratikakis (2013), 3D Object Retrieval via Range Image Queries in a Bag-of-Visual-Words Context, The Visual Computer, vol. 29, pp. 1351-1361

D33.    K. Ntirogiannis, B. Gatos and I. Pratikakis (2013), Performance Evaluation Methodology for Historical Document Image Binarization, IEEE Transactions on Image Processing, vol. 22, no. 2, pp. 595-609.

D32. A. Bolovinou, I. Pratikakis and S.J. Perantonis, Bag of spatio-visual words for context inference in scene image classification, Pattern Recognition, http://dx.doi.org/10.1016/j.patcog.2012.07.024

D31. K. Sfikas, I. Pratikakis and T. Theoharis, Non-Rigid 3D Object Retrieval using Topological Information guided by Conformal factors, The Visual Computer, http://dx.doi.org/10.1007/s00371-012-0714-z

D30. N. Stamatopoulos, B. Gatos and I. Pratikakis, A methodology for document image dewarping techniques performance evaluation, IET Image Processing, vol. 6, No. 6, 738-745

D29. M.Anthimopoulos, B. Gatos and I. Pratikakis, Text Detection in Natural Scene Images and Video Frames, Pattern Analysis and Applications, http://dx.doi.org/10.1007/s10044-011-0237-7

D28. A. Kesidis, E. Galiotou, B. Gatos and I. Pratikakis, A word spotting framework for historical machine printed documents (2011), International Journal of Document Analysis and Recognition, Springer, vol. 14, Issue 2, pp. 131-144

D27. K. Sfikas, T. Theoharis and I. Pratikakis, ROSy+: 3D Object pose normalisation based on PCA and Reflective Object Symmetry with Application in 3D Object retrieval (2011), International Journal of Computer Vision, Springer, 91 (3), pp. 262-279.

D26. N. Stamatopoulos, B. Gatos, I. Pratikakis and S.J. Perantonis (2011), Goal-oriented Rectification of Camera-Based Document Images, IEEE Transactions on Image Processing, vol. 20, No. 4, pp. 910-920

D25. A. Αgathos, I.Pratikakis, P. Papadakis, S. Perantonis, P. Azariadis and N. Sapidis (2010), Retrieval of 3D articulated Objects Using a Graph-based Representation, The Visual Computer – Elsevier, Vol. 26, Number 10, pp. 1301-1319.

D24. B. Gatos, K. Ntirogiannis and I. Pratikakis (2010), DIBCO 2009 - Document Image Binarization Contest, International Journal of Document Analysis and Recognition, DOI 10.1007/s10032-010-0115-7.

D23. M.Anthimopoulos, B. Gatos and I. Pratikakis, A Two-Stage Scheme for Text Detection in Video Images, Image and Vision Computing, vol. 28, pp. 1413 – 1426.

D22. A. Agathos, I. Pratikakis, S. Perantonis and N. Sapidis, A protrusion-oriented 3D mesh segmentation, The Visual Computer - Elsevier,vol. 26, No. 1, 2010, pp. 63-81.

D21. P. Papadakis, I. Pratikakis, T. Theoharis, and S. Perantonis, PANORAMA: A 3D shape descriptor based on panoramic views for unsupervised 3D object retrieval, International Journal of Computer Vision – Springer,vol. 89, Issue 2, pp. 177-192.

D20. G. Louloudis, B. Gatos,  I. Pratikakis and C. Halatsis (2009), Text Line and Word Segmentation of Handwritten Documents, Pattern recognition – Special issue on Handwriting Recognition, vol. 42, Issue 12, pp. 3169-3183.

D19.    I. Vanhamel, C. Mihai, H. Sahli, A. Katartzis, and I. Pratikakis  (2009), Scale Selection for Compact Scale-Space Representation of Vector-Valued Images, International Journal of Computer Vision - Springer , 84: pp. 194-204

D18.   G. Louloudis, B. Gatos, I. Pratikakis, C. Halatsis (2008), Text line detection in handwritten documents, Pattern Recognition vol. 41, Issue 12, pp. 3758-3772.

D17.  P. Papadakis, I. Pratikakis, T. Trafalis, T. Theoharis and S. Perantonis (2008), Relevance feedback  in content-based 3D object retrieval - A comparative study, Computer-Aided Design and Applications (CAD&A), vol. 5, No. 5, pp. 753-763, ISSN 1686-4360.

D16.  I. Pratikakis, A. Karahaliou, K. Vassiou, V. Virvilis, D. Kosmopoulos, and S. Perantonis (2008), e-MedI - Web-based e-training for multimodal breast imaging, International Journal of Biological and Medical Sciences, vol. 1, No. 2, pp. 82-88, ISSN 1307-7457.

D15.    P. Papadakis, I. Pratikakis, S. Perantonis and T. Theoharis (2007), Efficient 3D Shape Matching and Retrieval using a Concrete Radialized spherical projection representation, Pattern Recognition, Vol. 40, Issue 9, pp. 2437-2452.

D14.   A. Agathos, I.Pratikakis, S. Perantonis, P. Azariadis and N. Sapidis (2007), 3D Mesh Segmentation Methodologies for CAD applications, Computer-Aided Design and Applications (CAD&A), ISSN 1686-4360, vol. 4, No. 6, pp. 827-842.

D13.  Ntzios K, Gatos B., Pratikakis I., Konidaris T. and Perantonis S.J.(2007), An old Greek handwritten OCR system based on an efficient segmentation-free approach, International Journal on Document Analysis and Recognition (IJDAR), Special issue on the analysis of historical documents, Vol. 9, No. 2-4,  pp. 179-192.

D12.  Konidaris T, Gatos B., Ntzios K., Pratikakis I., Theodoridis S.,.and Perantonis S.J. (2007), Keyword-guided word spotting in historical printed documents using synthetic data and relevance feedback, International Journal on Document Analysis and Recognition (IJDAR), Special issue on the analysis of historical documents, Vol. 9, No. 2-4,  pp. 167-177.

D11.  I. Pratikakis, I. Vanhamel, H, Sahli, B, Gatos and S. Perantonis (2006), Unsupervised watershed-driven region-based image retrieval, IEE Proceedings on Vision Image and Signal Processing, Special Issue on  Knowledge-based digital media processing, vol. 153, Issue 3, pp. 313-322.

D10.  Gatos B., Ntzios K., Pratikakis I., Petridis S., Konidaris T. and Perantonis S.J. (2006), Toward an old Greek handwritten manuscript OCR, Pattern Analysis and Applications journal, Vol. 8, No. 4, pp. 305-320.

D9.    B. Gatos, I. Pratikakis, and S.J. Perantonis (2006), Adaptive degraded document image binarisation, Pattern Recognition, Vol. 39, Issue 3, 2006, pp. 317-327.

D8.    Perantonis, S.J., Gatos, B., Ntzios, K., Pratikakis, I., Vrettaros, I., Drigas, A.S., Emmanouilidis, C. , Kesidis, A.,  Kalomirakis, D., (2004), A System for Processing and Recognition of Old Greek Manuscripts (The D-SCRIBE Project), Transactions on Computers, Issue 6, Volume 3, WSEAS Press, pp. 2049-2057.

D7.    Perantonis, S.J., Gatos, B., Ntzios K., Pratikakis, I., Vrettaros, I., Drigas, A., Emmanouilidis, C., Kesidis, A, and Kalomirakis, D., (2004) Digitisation, Processing and Recognition of Old Greek Manuscripts (The  D- SCRIBE Project), International Journal on Information Theories & Applications (IJITA), Vol. 11, No 3, pp.232-240, 2004.

D6.  Vanhamel I., Pratikakis I., and Sahli H. (2003). Multiscale gradient watersheds of color images, IEEE Transactions on Image Processing, vol. 12, no. 6 : 617-626

D5.    Pratikakis I., C. Barillot, P. Hellier and E. Memin (2003). Robust multiscale deformable registration of 3D Ultrasound images, International Journal of Image and Graphics – Special Issue on 3D Vision and Medical image Processing, vol. 3, no. 4 : 1-19.

D4.   Zhang K., Pratikakis I., Cornelis J., and Nyssen E. (2000). Using landmarks to establish a point-to-point correspondence between signatures, Pattern Analysis and Applications journal, 3(1):69-75.

D3.  Pratikakis I., Sahli H., and Cornelis J. (1999). Low level partitioning guided by the gradient watershed hierarchy, Signal Processing,75(2):173-195.

D2.  Dendale P., Franken P., Block P., Pratikakis I., and Roos A.D. (1998). Contrast enhanced and functional magnetic resonance imaging for the detection of viable myocardium after infarction. American Heart Journal, 135(5):875-880.

D1.  Xin Y., Truyen B., Pratikakis I., and Cornelis J. (1996). Hierarchical contour matching in medical images. Image and Vision Computing, 14(6):417-433.

E. CONFERENCES

Ε110. E. Karypidis, G. Zamanakos, L. Tsochatzidis, and I. Pratikakis (2023), , 24th International Conference on Digital Signal Processing (DSP 2023), June 11-13, 2023, Rhodes, Greece, IEEE Computer Society Press.

Ε109. G. Zamanakos, L. Tsochatzidis, A. Amanatiadis, and I. Pratikakis (2022), A cooperative LiDAR-Camera scheme for extrinsic calibration, IEEE 14th Image, Video, and Multidimensional Signal Processing Workshop (IVMSP), June 26, 2022, Nafplio, Greece, IEEE Computer Society Press.

Ε108. K. Markou, L. Tsochatzidis, K. Zagoris, A. Papazoglou, X. Karagiannis, S. Symeonidis and I. Pratikakis (2021), A convolutional recurrent neural network for the handwritten text recognition of historical greek manuscripts, 15th IAPR International Conference on Pattern Recognition (ICPR’20), January 10, 2021, Milano, Italy, IEEE Computer Society Press

Ε107. Matej Vitek, ABHIJIT DAS, Yann Pourcenoux, Alexandre Missler, Calvin Paumier, Sumanta Das, Ishita De Ghosh, Diego R. Lucio, Luiz Zanlorensi, David Menotti, Fadi Boutros, Naser Damer, Jonas Henry Grebe, Arjan Kuijper, Junxing Hu, yong he, Caiyong Wang, Hongda Liu, Yunlong Wang, Zhenan Sun, Daile Osorio, Christian Rathgeb, Christoph Busch, Juan Tapia Farias, Andres Valenzuela, Georgios Zampoukis, Lazaros Tsochatzidis, Ioannis Pratikakis, Sabari Nathan, Suganya R, Vineet Mehta, Abhinav Dhall, Kiran Raja, Gourav Gupta, Jalil Nourmohammadi Khiarak, Mohsen Akbari-Shahper, Farhang Jaryani, Meysam Asgari Chenaghlu, Ritesh Vyas, Sristi Dakshit, Sagnik Dakshit, Peter Peer, Umapada Pal and Vitomir Struc (2020), SSBC 2020: Sclera Segmentation Benchmarking Competition in the Mobile Environment, 2020 IEEE International Joint Conference on Biometrics (IJCB’20), September 28 – October 1, 2020, (Houston Online), IEEE Computer Society Press.

Ε106. I. Pratikakis, K. Zagoris, X. Karagiannis, L. Tsochatzidis, T. Mondal and I. Marthot-Santaniello (2019), ICDAR 2019 Competition on Document Image Binarization (DIBCO 2019), 15th IAPR International Conference on Document Analysis and Recognition (ICDAR’19), September 20-25, 2019, Sydney, Australia, IEEE Computer Society Press.

Ε105. I. Pratikakis, K. Zagoris, G. Kaddas and B. Gatos (2018), ICFHR 2018 Competition on Handwritten Document Image Binarization (H-DIBCO 2018), 16th International Conference on Frontiers in Handwriting Recognition (ICFHR’18), August 5-8, 2018, Niagara Falls, NY, USA, pp. 619-623, IEEE Computer Society Press.

Ε104. K. Zagoris and I. Pratikakis, (2017), Bio-Inspired Modeling for the Enhancement of Historical Handwritten Documents, 14th IAPR International Conference on Document Analysis and Recognition (ICDAR’17), November 09-15, 2017, Kyoto, Japan, pp. 288-293, IEEE Computer Society Press.

Ε103. I. Pratikakis, K. Zagoris, G. Barlas and B. Gatos (2017), ICDAR 2017 Competition on Document Image Binarization (DIBCO 2017), 14th IAPR International Conference on Document Analysis and Recognition (ICDAR’17), November 09-15, 2017, Kyoto, Japan, pp. 1395-1403, IEEE Computer Society Press.

Ε102. Κ. Sfikas, Τ. Theoharis and I. Pratikakis  (2017), Exploiting the PANORAMA Representation for Convolutional Neural Network Classification and Retrieval, In Eurographics Workshop on 3D Object Retrieval, April 23-24, Lyon, France, I. Pratikakis and F. Dupont and M. Ovsjanikov (eds.), ISBN 978-3-03868-030-7.

Ε101. Pratikakis I., Zagoris K., Gatos B., Puigcerver J., Toselli A. and Vidal E., (2016), ICFHR 2016 Handwritten KeyWord Spotting Competition (H-KWS2016), 15th International Conference on Frontiers in Handwriting Recognition (ICFHR’16), October 23-26, 2016, Shenzhen, China, pp. 613-618, IEEE Computer Society Press.

Ε100. I. Pratikakis, K. Zagoris, G. Barlas and B. Gatos (2016), ICFHR 2016 Handwritten Document Image Binarization Contest (H-DIBCO 2016), 15th International Conference on Frontiers in Handwriting Recognition (ICFHR’16), October 23-26, 2016, Shenzhen, China, pp. 619-623, IEEE Computer Society Press.

Ε99. I. Pratikakis et al. (2016), SHREC’16 Track: Partial Shape Queries for 3D Object Retrieval, In Eurographics Workshop on 3D Object Retrieval, May 8, 2016, Lisbon, Portugal, A. Ferreira, A. Giachetti and D. Giorgi (eds.), pp. 79-88.

Ε98. George Ioannakis, Christodoulos Chamzas, Anestis Koutsoudis, Nikolaos Papamarkos, Ioannis Pratikakis, Fotis Arnaoutoglou, Nikolaos Mitianoudis, Thomas Sgouros (2016), S Applying conformal geometry for creating a 3D model spatial-consistent texture map. 2016 Digital Media Industry & Academic Forum (DMIAF 2016): 117-120

Ε97. L. Tsochatzidis, A. Karahaliou, K. Zagoris, S. Skiadopoulos, N. Arikidis, L. Costaridou and I. Pratikakis, (2015), “A two-stage SVM-based mammographic CBIR for CADx” in Proc. MICCAI, Workshop on Breast Image Analysis, Munich, Germany, October 9, 2015.

Ε96. N. Arikidis, S. Skiadopoulos, A. Karahaliou, A. Kazantzi, K. Vassiou, L. Tsochatzidis, I. Pratikakis and L. Costaridou (2015), “Shortest Paths of Mass Contour Estimates in Mammography” in Proc. MICCAI, Workshop on Breast Image Analysis, Munich, Germany, October 9, 2015.

Ε95. Zagoris K., Pratikakis I., and Gatos B., (2015), A Framework for Efficient Transcription of Historical Documents Using Keyword Spotting, In 3^rd International Workshop on Historical Document Imaging and Processing (HIP’15), Aug. 22, 2015, Nancy, France.

Ε94. A. Koutsoudis, G. Ioannakis, I. Pratikakis, and C. Chamzas (2015), RETRIEVAL^3D : An On-line Content-Based Retrieval Performance Evaluation Tool, In Eurographics Workshop on 3D Object Retrieval, May 2-3, 2015, Zurich, Switzerland, I. Pratikakis, M. Spagnuolo, T. Theoharis, L. Van Gool and R. Veltkamp (eds.), pp. 95-98.

Ε93. M. Savelonas, I. Pratikakis and K. Sfikas (2015), Partial 3D Object Retrieval combining Local Shape Descriptors with Global Fisher Vectors, In Eurographics Workshop on 3D Object Retrieval, May 2-3, 2015, Zurich, Switzerland, I. Pratikakis, M. Spagnuolo, T. Theoharis, L. Van Gool and R. Veltkamp (eds.), pp. 23-30.

Ε92. Antonios Danelakis, Theoharis Theoharisand Ioannis Pratikakis, (2015), A Spatio-Temporal Descriptor for Dynamic 3D Facial Expression Retrieval and Recognition, In Eurographics Workshop on 3D Object Retrieval, May 2-3, 2015, Zurich, Switzerland, I. Pratikakis, M. Spagnuolo, T. Theoharis, L. Van Gool and R. Veltkamp (eds.), pp. 63-70.

Ε91. C. Veinidis, I. Pratikakis, T. Theoharis, "Querying 3D mesh sequences for human action retrieval" in Proc. International Conference of 3D Computer Vision (3DV’14), Workshop on Dynamic Shape Measurement and Analysis, December 8-11, 2014, Tokyo, Japan, 2014, pp. 33-40.

Ε90. L. Tsochatzidis, K. Zagoris, M. Savelonas, N. Papamarkos, I. Pratikakis, N. Arikidis, L. Costaridou, "Microcalcification-Oriented Content-based Mammogram Retrieval for Breast Cancer Diagnosis," in Proc. IEEE International Conference on Imaging Systems and Techniques (IST’14), October 14-17, 2014, Santorini, Greece, ISBN 978-1-4799-5220-5/14/.

Ε89. Zagoris K., Pratikakis I., and Gatos B., (2014), Segmentation-based Historical Handwritten Word Spotting using Document-Specific Local Features, 14^th International Conference on Frontiers in Handwriting Recognition (ICFHR’14), September 1-4, 2014, Crete island, Greece, pp. 9-14, IEEE Computer Society Press, ISBN-978-1-4799-4335-7.

Ε88. Pratikakis I., Zagoris K., Gatos B., Louloudis G. and Stamatopoulos N., (2014), ICFHR 2014 Competition on Handwritten KeyWord Spotting (H-KWS2014), 14^th International Conference on Frontiers in Handwriting Recognition (ICFHR’14), September 1-4, 2014, Crete island, Greece, pp. 814-819, IEEE Computer Society Press, ISBN-978-1-4799-4335-7.

Ε87. Ntirogiannis K., Gatos B., and Pratikakis I., (2014), ICFHR 2014 Competition on Handwritten Document Image Binarization (H-DIBCO2014), 14^th International Conference on Frontiers in Handwriting Recognition (ICFHR’14), September 1-4, 2014, Crete island, Greece, pp. 809-813, IEEE Computer Society Press, ISBN-978-1-4799-4335-7.

Ε86. L. Tsochatzidis, K. Zagoris, M. Savelonas, I. Pratikakis, “SVM-based CBIR of Breast Masses on Mammograms,” in Proc. European Conference on Artificial Intelligence (ECAI), Workshop on Artificial Intelligence and Assistive Medicine, Prague, Czech Republic, 2014.

Ε85. K. Sfikas, I. Pratikakis, and T. Theoharis (2014), Non-Rigid 3D Object Pose Normalization based on Core Segment Symmetrical Features, CAD’14, Hong Kong, China, June 23-26, 2014.

Ε84. Antonios Danelakis, Theoharis Theoharisand Ioannis Pratikakis, (2014), GeoTopo: Dynamic 3D Facial Expression Retrieval Using Topological and Geometric Information, In Eurographics Workshop on 3D Object Retrieval, April 6^th, 2014, Strasbourg, France, J-P. Vandeborre, H. Tabia, B. Bustos, A. Godil and R. Veltkamp (eds.), pp. 1-8.

Ε83. Michalis A. Savelonas and Ioannis Pratikakis and Konstantinos Sfikas, (2014), Fisher Encoding of Adaptive Fast Persistent Feature Histograms for Partial Retrieval of 3D Pottery Objects, In Eurographics Workshop on 3D Object Retrieval, April 6^th, 2014, Strasbourg, France, J-P. Vandeborre, H. Tabia, B. Bustos, A. Godil and R. Veltkamp (eds.), pp. 61-68.

Ε82. Virvilis V., Perantonis P., Zagoris K. and Pratikakis I. (2013), A Multimodal e-Learning environment for orthopedics: Design and implementation challenges, 16th International Conference on System Theory, Control and Computing, Joint Conference SINTES 16, SACCS 12, SIMSIS 16, October 12, 2013, Sinaia, Romania

Ε81. Konstantinos Sfikas, Ioannis Pratikakis, Anestis Koutsoudis, Michalis Savelonas and Theoharis Theoharis (2013), 3D Object Partial Matching using panoramic views, MM4CH’13 – 2^nd International Workshop on Multimedia for Cultural Heritage, September 9, 2013, Naples, Italy.

Ε80. Zagoris K. and Pratikakis I. (2013), Text detection in Natural Images using a bio-inspired model, 12^th International Conference on Document analysis and Recognition (ICDAR’13), August 25-29, 2013, Washington DC, USA.

Ε79. Pratikakis I., Gatos B., and Ntirogiannis K. (2013), ICDAR 2013 Document Image Binarization Contest (DIBCO2013), 12^th International Conference on Document analysis and Recognition (ICDAR’13), August 25-29, 2013, Washington DC, USA

Ε78. Zagoris K., Pratikakis I. Virvilis V., Perantonis P., (2013), ORTHO-eMAN: A Web-based e-Training Platform for Orthopedics, NHIBE – 8^th International Conference on New Horizons in Industry, Business and Education, August 29-30, 2013, Chania, Greece, pp. 97-104.

Ε77. P. Theologou, I. Pratikakis, and T. Theoharis (2013), A review on 3D object retrieval methodologies using a part-based representation, Extended Abstract in CAD’13, Bergamo, Italy, June 17-20.

Ε76. Konstantinos Sfikas, Ioannis Pratikakis, and Theoharis Theoharis (2013), SymPan: 3D Model Pose Normalization via Panoramic Views and Reflective Symmetry, In Eurographics Workshop on 3D Object Retrieval, May 11, Girona, Spain, S. Biasotti and I. Pratikakis and U. Castellani and T. Schreck and A. Godil and R. Veltkamp (eds.), pp. 41-48, ISBN 978-3-905674-44-6.

Ε75. A. Danelakis, T. Theoharis and I. Pratikakis (2012), 3D Mesh Video Retrieval: A Survey, In 3DTV-CONFERENCE 2012, The True Vision, Capture, Transmission and Display of 3D Video, ETH Zurich, October 15-17, 2012.

Ε74. Zagoris K., Pratikakis I., (2012), Scene Text Detection on Images Using Cellular Automata, 10th International Conference on Cellular Automata for Research and Industry (ACRI’12), Santorini Island, Greece, September 24-27, 2012, Proceedings. Lecture Notes in Computer Science 7495 Springer 2012, ISBN 978-3-642-33349-1.

Ε73. Zagoris K., Pratikakis I., Antonacopoulos A., Gatos B., and Papamarkos N. (2012), Handwritten and machine-Printed and Text Separation in Document Images using the Bag of Visual Words Paradigm (2012), 13^th International Conference on Frontiers in Handwriting Recognition (ICFHR’12), September 18-20, 2012, Bari, Italy, pp. 103-108, IEEE Computer Society Press, ISBN-978-0-7695-4774-9.

Ε72. Pratikakis I., Gatos B., and Ntirogiannis K. (2012), ICFHR 2012 Competition on Handwritten Document Image Binarization (H-DIBCO2012), 13^th International Conference on Frontiers in Handwriting Recognition (ICFHR’12), September 18-20, 2012, Bari, Italy, pp. 813-818, IEEE Computer Society Press, ISBN-978-0-7695-4774-9.

Ε71. Konstantinos Sfikas, Ioannis Pratikakis, and Theoharis Theoharis  (2012), 3D Object Retrieval via range Image Queries based on SIFT descriptors on Panoramic Views, In Eurographics Workshop on 3D Object Retrieval, May 13, Cagliari, Italy, M. Spagnuolo and M. Bronstein and A. Bronstein and A. Ferreira (eds.), http://dx.doi.org/10.2312/3DOR/3DOR12/009-015

Ε70. Pratikakis I., Gatos B., and Ntirogiannis K. (2011), ICDAR 2011 Document Image Binarization Contest (DIBCO2011), 11^th International Conference on Document analysis and Recognition (ICDAR’11), September 18-21, 2011, Beijing, China, pp. 1506-1510.

Ε69. Ntirogiannis K., Gatos B. and Pratikakis I. (2011), Binarization of textual content in video frames, 11^th International Conference on Document analysis and Recognition (ICDAR’11), September 18-21, 2011, Beijing, China, pp. 673-677.

Ε68. Konstantinos Sfikas, Ioannis Pratikakis, and Theoharis Theoharis  (2011), ConTopo: Non-Rigid 3D Object Retrieval using Topological Information guided by Conformal Factors, In Eurographics Workshop on 3D Object Retrieval, April 10, Llandudno, UK, Eurographics/ACM SIGGRAPH Symposium Proceedings, H. Laga and T. Schreck and A. Ferreira and A. Godil and I. Pratikakis and R. Veltkamp (eds.), ISBN: 978-3-905674-31-6, pp. 25-32.

Ε67. Ioannis Pratikakis, Basilis Gatos and Konstantinos Ntirogiannis (2010), H-DIBCO 2010 – Handwritten Document Image Binarization Competition, In the 12^th International Conference on Frontiers in Handwriting Recognition (ICFHR’10), November. 16-18, 2010, Kolkata, India, pp. 727-732, IEEE Computer Society Press

Ε66.  Anastasios Kesidis, Eleni Galiotou, Basilis Gatos, Aristomenis Lampropoulos, Ioannis Pratikakis, Ioanna Manolessou, Angela Ralli (2009), Accessing the content of Greek historical documents, In 3^rd Workshop on Analytics for Noisy Unstructured Data (ADD’09), July. 23-24, 2009, Barcelona, Spain, pp. 55-62

Ε65.  Gatos B., Ntirogiannis K and Pratikakis I. (2009), ICDAR 2009 Document Image Binarization Contest (DIBCO2009), 10^th International Conference on Document analysis and Recognition (ICDAR’09), July. 26-29, 2009, Barcelona, Spain, pp. 1375-1382.

Ε64.  Ntirogiannis K., Gatos B. and Pratikakis I. (2009), A modified adaptive logical level binarization technique for historical document images, 10^th International Conference on Document analysis and Recognition (ICDAR’09), July. 26-29, 2009, Barcelona, Spain, pp. 1171-1175.

Ε63.  N. Stamatopoulos, Gatos B. and Pratikakis I. (2009), A methodology for document image dewarping techniques performance evaluation, 10^th International Conference on Document analysis and Recognition (ICDAR’09), July. 26-29, 2009, Barcelona, Spain, pp. 956-960.

Ε62.  Gatos B. and Pratikakis I. (2009), Segmentation-free word spotting in historical printed documents, 10^th International Conference on Document analysis and Recognition (ICDAR’09), July. 26-29, 2009, Barcelona, Spain, pp. 271-275.

Ε61.  A. Αgathos, I.Pratikakis, P. Papadakis, S. Perantonis, P. Azariadis and N. Sapidis (2009), Retrieval of 3D articulated Objects Using a Graph-based Representation, In Eurographics Workshop on 3D Object Retrieval, March 29, Munich, Germany, Eurographics/ACM SIGGRAPH Symposium Proceedings, I. Pratikakis, M. Spagnuolo, T. Theoharis, and R. Veltkamp (eds.), ISBN: 978-3-905674-16-3, pp. 29-36.

Ε60.  Pichis G., Pratikakis I., Arikidis N.,  Kalogeropoulou C., Karahaliou A. and L. Costaridou, “Evaluation of mutual information- based registration of bone lytic disease in CT follow up data”, 6th European Symposium  on Biomedical Engineering, 19 - 21  June  2008, Chania, Greece.

Ε59.  P. Papadakis, I. Pratikakis, T. Theoharis and S. Perantonis, CIL3D: A content-based 3D model search engine, 3^rd ACM International Conference on Digital Interactive Media in Entertainment & Arts (DIMEA 2008), Athens Information Technology, Athens, Greece, September 10-12, 2008, accepted for presentation.

Ε58.  B. Gatos, I. Pratikakis, and S. Perantonis, Improved Document Image Binarization by Using a Combination of Multiple Binarization Techniques and Adapted Edge Information, The 19^th International Conference on Pattern Recognition (ICPR 2008), Tampa, Florida, USA, December 8-11, 2008, accepted for presentation.

Ε57.  N. Stamatopoulos, B Gatos, I. Pratikakis and S. J. Perantonis, A two step dewarping of camera document images, The 8^th IAPR International Workshop on Document Analysis Systems (DAS 2008), Nara Prefectural New Public Hall, Nara, Japan, September 17-19, 2008, accepted for presentation.

Ε56.  K. Ntirogiannis, B. Gatos and I. Pratikakis, An Objective Evaluation Methodology for Handwritten Image Document Binarization Techniques, The 8^th IAPR International Workshop on Document Analysis Systems (DAS 2008), Nara Prefectural New Public Hall, Nara, Japan, September 17-19, 2008, accepted for presentation

Ε55.  B. Gatos, I. Pratikakis and S. J. Perantonis, Efficient Binarization of Historical and Degraded Document Images, Nara Prefectural New Public Hall, Nara, Japan, September 17-19, 2008, The 8^th IAPR International Workshop on Document Analysis Systems (DAS 2008), accepted for presentation

Ε54.  M. Anthimopoulos, B Gatos, I. Pratikakis, A hybrid system for text detection in video frames, Nara Prefectural New Public Hall, Nara, Japan, September 17-19, 2008, The 8^th IAPR International Workshop on Document Analysis Systems (DAS 2008), accepted for presentation

Ε53.  P. Papadakis, I. Pratikakis, S. Perantonis, T. Theoharis and G. Passalis (2008), SHREC’08 Entry: 2D/3D Hybrid, IEEE International Conference on Shape Modeling and Applications (SMI'08), Session: SHREC-3D Shape Retrieval Contest, Stony Brook University, USA, June 4-6, 2008, accepted for presentation.

Ε52. G. Louloudis, B. Gatos and I. Pratikakis (2008), Line and Word Segmentation of Handwritten Documents, In Proceedings of IAPR International Conference on Frontiers in Handwriting Recognition (ICFHR'08), Montreal, Quebec, Canada, August 19-21, 2008, accepted for presentation.

Ε51. K. Ntirogiannis, B. Gatos and I. Pratikakis (2008), An Objective Evaluation Methodology for Handwritten Image Document Binarization Techniques, In Proceedings of  IAPR International Conference on Frontiers in Handwriting Recognition (ICFHR'08), Montreal, Quebec, Canada, August 19-21, 2008, accepted for presentation.

Ε50. P. Papadakis, I. Pratikakis, T. Theoharis, G. Passalis, and S. Perantonis (2008), 3D Object retrieval using an efficient and compact hybrid shape descriptor, In Proceedings of Eurographics Workshop on 3D object retrieval, Crete, Greece, April 15, 2008, pp. 9-16, ISBN 978-3-905674-05-7.

E49.  I. Pratikakis, D. Kosmopoulos, V. Virvilis, A. Karahaliou, K. Vassiou, A. Damianakis and S. Perantonis (2007), E-MedI - Interactive web-based e-training for breast imaging, IADIS International Conference WWW/Internet 2007, Villa Real, Portugal, October 6-8, 2007, pp. 19-26.

E48. Gatos B., Pratikakis I. and K. Ntirogiannis (2007), Segmentation-Based Recovery of Arbitrarily Warped Document Images, 9^th International Conference on Document analysis and Recognition (ICDAR'07), ISSN Number 1520-5363, Vol. 2, Sep. 23-26, 2007, Curitiba, Brazil, pp. 989-993.

E47.   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.

E46.   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.

E45.   I. Vanhamel, C. Mihai, H. Sahli and I. Pratikakis (2007), Content-based image retrieval via multiscale graph-based segmentation, In M.-F. Moens, T. Tuytelaars, and A.P. de Vries, (Eds.), 7^th Dutch-Belgian Information Retrieval workshop (DIR'07), Leuven, Belgium, March 28-29, 2007, pp. 43-50.

E44.  C. Mihai, I. Vanhamel, A. Katartzis, I. Pratikakis, and H. Sahli (2007), Scale selection for compact scale-space representation of vector-valued images, In F. Sgallari, A. Murli and N. Paragios (Eds) Scale Space and Variational Methods in Computer Vision, LNCS 4485, International Conference on Scale-Space and Variational Methods in Computer Vision (SSVM'07), Ischia, Italy, May 30 – June 2, 2007,  pp. 32-42

E43.  M. Anthimopoulos, B. Gatos, I. Pratikakis, S.J. Perantonis (2007), Text Detection in video frames, International Conference on Computer Vision Theory and Applications (VISAPP'07), Barcelona, Spain, March 8-11, 2007, ISBN 978-972-8865-74-0, pp 161-166.

E42.  G. Vamvakas, B. Gatos, I. Pratikakis, N. Stamatopoulos, A. Romiotis, S.J. Perantonis (2007), Hybrid Off-Line OCR for Isolated Handwritten Greek Characters, The Fourth IASTED International Conference on Signal Processing, Pattern Recognition and Applications (SPPRA'07), ISBN: 978-0-88986-646-1, Innsbruck, Austria, Feb. 14-16, 2007, pp. 197-202.

E41.  M. Anthimopoulos, B. Gatos, I. Pratikakis, S.J. Perantonis (2007), Detecting Text in video frames, The Fourth IASTED International Conference on Signal Processing, Pattern Recognition, and Applications (SPPRA'07), ISBN: 978-0-88986-646-1, Innsbruck, Austria, Feb. 14-16, 2007, pp. 39-44

E40.  I. Pratikakis, V. Virvilis, D. Kosmopoulos, S. Perantonis, D. Tsatsos and A. Damianakis (2007), E-MedI - A web-based e-training platform for breast imaging, The 3^rd International Conference on Web Information Systems and Technologies (WEBIST), ISBN: 978-972-8865-79-5, Barcelona, Spain, March 3-6, 2007, pp. 338-345.

E39.   I. Vanhamel, I. Pratikakis and H. Sahli (2006), Multiscale Graph Theory based Color Segmentation, IEEE International Conference on Image Processing (ICIP), Atlanta, Georgia, USA, Oct. 8-11, 2006.

E38.   B. Gatos, I. Pratikakis, and S.J. Perantonis (2006), Hybrid Off-line Cursive Handwriting Word Recognition, International Conference on Pattern Recognition (ICPR'06), Hong-Kong, China, Aug. 20-24, 2006, pp. 998-1001

E37.   I. Vanhamel, H. Sahli, and I. Pratikakis (2006), Nonlinear multiscale graph theory-based segmentation of color images, International Conference on Pattern Recognition (ICPR'06), Hong-Kong, China, Aug. 20-24, 2006, pp. 407-411

E36.  G. Louloudis, B. Gatos, I. Pratikakis, K. Halatsis (2006), A Block-based Hough transform mapping for text line detection in handwritten documents, International Workshop on Frontiers in Handwriting Recognition (IWFHR'06), ISBN: 2-9527630-0-3/978-2-9527630-0-4, Baule, France, Oct. 23-26, 2006, pp. 515-520

E35.  B. Gatos, I. Pratikakis, A. Kesidis and S. Perantonis (2006), Efficient Off-Line Cursive Handwriting Word Recognition, International Workshop on Frontiers in Handwriting Recognition (IWFHR'06), ISBN: 2-9527630-0-3/978-2-9527630-0-4, Baule, France, Oct. 23-26, 2006, pp. 121-126

E34.  C.D. Spyropoulos, G. Paliouras, V. Karkaletsis, D. Kosmopoulos, I. Pratikakis, S. Perantonis, B. Gatos (2006), BOEMIE: Bootstrapping Ontology Evolution with Multimedia Information Extraction, International Workshop on Intelligent Information Access (IIIA-2006), Helsinki, Finland, July 2006.

E33.  P. Papadakis, I. Pratikakis, S. Perantonis and T. Theoharis (2006), A Concrete Radialized spherical projection descriptor for 3D shape retrieval, IEEE International Conference on Shape Modeling and Applications (SMI'06), Session: SHREC-3D Shape Retrieval Contest, Matsushima, Japan, June 14-16, 2006, ISBN: 972-8865-40-6, pp. 155-160, Appears also as a Chapter at the Technical Report UU-CS-2006-030, ISSN: 0924-3275, edited by R.C. Veltkamp, R. Ruijsenaars, M. Spagnuolo, R. van Zwol and F. ter Haar.

E32. I. Pratikakis, B. Gatos and Stelios C.A. Thomopoulos (2006), Scene categorisation using low-level visual features, International Conference on Computer Vision Theory and Applications (VISAPP'06), Setubal, Portugal, Feb. 25-28, 2006, ISBN: 972-8865-40-6, pp. 155-160.

E31.  D. Kosmopoulos, S. Petridis, I. Pratikakis, B. Gatos, S. Perantonis, V. Karkaletsis, G. Paliouras (2006), Knowledge Acquisition from Multimedia Content using an Evolution Framework, 3rd. IFIP Conference on Artificial Intelligence Applications & Innovations (AIAI), Athens, Greece, June 7-9, 2006, ISBN: 978-0-387-34223-8, pp. 557-565

E30.  Β. Gatos, T. Konidaris, I. Pratikakis and S. Perantonis (2006), A holistic methodology for keyword search in historical typewritten documents, 4^th Hellenic Conference on Artificial Intelligence, Lecture Notes in Computer Science (LNCS), vol. 3955, Editors:  Grigoris Antoniou, George Potamias, Costas Spyropoulos, Dimitris Plexousakis, ISBN: 3-540-34117-X, Irakleion, Greece, pp. 490-493.

E29.  C.D. Spyropoulos, G. Paliouras, V. Karkaletsis, D. Kosmopoulos, I. Pratikakis, S. Perantonis and B. Gatos (2005), BOEMIE: Bootstrapping ontology evolution with multimedia information extraction, 2^nd IEE European Workshop on the Integration of Knowledge, Semantic and Digital Media Technologies, London, UK, 2005, ISBN 0-86341-595-4, pp. 419-420.

E28.  Gatos B., Pratikakis I., and Perantonis S.J. (2005), Text detection in indoor/outdoor scene images, First International Workshop on Camera-based Document Analysis and Recognition (CBDAR’05), Aug. 29, Seoul, Korea, pp. 127-132.

E27.  I. Pratikakis, I. Vanhamel, H. Sahli, B, Gatos and S. Perantonis (2005), Object-driven content-based image retrieval, In Proceedings of the 12^thInternational Workshop on Systems, Signals and Image Processing (IWSSIP'05), 22-24 September, Chalkida, Greece, 2005, INDERSCIENCE Publishers, ISBN 0-907776-20-5,  pp. 189-193.

E26.  Gatos B., Pratikakis I., and Perantonis S.J. (2005), Towards text recognition in natural scene images, 5th International Conference on Automation and Technology (ICTA'05), Thessaloniki, Greece, pp. 354-359.

E25. I. Pratikakis, I. Vanhamel, H, Sahli, B, Gatos and S. Perantonis (2005), Watershed-driven region-based image retrieval, In Proceedings of the 7^th International Symposium on Mathematical Morphology, 18-20 April, Paris, France, Springer, ISBN-10-1-4020-3442-3, pp.207-216.

E24.  Gatos B., Danatsas, D., Pratikakis I., and Perantonis S.J. (2005), Automatic Table Detection in Document Images, Lecture Notes in Computer Science, Volume 3686 / 2005, Title:  Pattern Recognition and Data Mining: Third International Conference on Advances in Pattern Recognition, ICAPR 2005, Bath, UK, August 22-25, 2005, Proceedings, Part I, Editors:  Sameer Singh, Maneesha Singh, Chid Apte, Petra Perner, ISBN: 3-540-28757-4, Bath, UK, pp. 609-618.

E23.  Ntzios K, Gatos B.,., Pratikakis I., Konidaris T. and Perantonis S.J. (2005) An old Greek handwritten OCR, International Conference on Document analysis and Recognition (ICDAR'05), Aug. 29, Seoul, Korea, pp. 64-68.

E22.  Gatos B., Konidaris T,, Ntzios K., Pratikakis I.,.and Perantonis S.J. (2005), A segmentation-free approach for keyword search in historical typewritten documents, International Conference on Document analysis and Recognition (ICDAR'05), Aug. 29, Seoul, Korea, pp. 54-58.

E21.  Koutsokeras, M, Pratikakis, I and Miaoulis, G, (2005). A web-based 3D graphical model search engine, In Proceedings of the Eighth International Conference on Computer Graphics and Artificial Intelligence, May 11-12, Limoges, France, pp. 79-90.

E20.  I. Pratikakis, I. Vanhamel, H, Sahli, Z. Efraimidis, B, Gatos and S. Perantonis (2004), Unsupervised region-based image retrieval, IEE European Workshop on the Integration of Knowledge, Semantic and Digital Media Technologies, London, UK, 2004, pp. 39-46.

E19.  B. Gatos, K. Ntzios, I. Pratikakis, S. Petridis, T. Konidaris and S.J. Perantonis (2004), 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), Editors:  Simone Marinai, Andreas Dengel, ISBN: 3-540-23060-2, Florence, Italy, pp. 63-74.

E18.  B. Gatos, I. Pratikakis, and S.J. Perantonis (2004), An adaptive binarisation technique for low quality historical documents. IAPR Workshop on Document Analysis systems (DAS’2004), Lecture Notes in Computer Science (3163), Editors:  Simone Marinai, Andreas Dengel, ISBN: 3-540-23060-2, Florence, Italy, pp. 102-113.

E17.  Β. Gatos, I. Pratikakis and S. Perantonis (2004), Locating Text in historical collection manuscripts, 3^rd Hellenic Conference on Artificial Intelligence, Lecture Notes in Artificial Intelligence (LNAI-3025), Editors:  George A. Vouros, Themistoklis Panayiotopoulos, ISBN: 3-540-21937-4, Samos, Greece, 2004, pp. 476-485.

E16.  G. Vafiadis, C. Aggelopoulos, V. Moulos and I. Pratikakis (2004), Pythagoras : A 3D Interactive Geometry learning environment, in Proceedings of 3^rd Hellenic Conference on Artificial Intelligence, Samos, Greece, 2004, pp. 278-287.

E15.  I. Makris and I. Pratikakis (2004), PROTEIN: A Procedural Texture Authoring tool, in Proceedings of 3^rd Hellenic Conference on Artificial Intelligence, Samos, Greece, 2004, pp. 288-297.

E14. Yang L., Sahli H. and Pratikakis I. (2002). A Multigrid method for motion estimation based on diffusion process. 6^th World Multiconference on systemics, cybernetics and informatics (SCI'2002), July 14-18, pp. 371-377, Orlando, Florida, USA.

E13.  Pratikakis I., Barillot, C., and P. Hellier (2001). Robust multi-scale non-rigid registration of 3D Ultrasound images. In M. Kerckhove Third IEEE International Conference on Scale-space and morphology in Computer Vision (Scale-Space 2001), Lecture Notes in Computer Science (LNCS), No. 2106, pp. 389-397, Vancouver, Canada.

E12.  Vanhamel I., Pratikakis I., and Sahli H. (2001). Hierarchical segmentation using dynamics of multiscale color gradient watersheds. In M. Kerckhove  Third IEEE International Conference on Scale-space and morphology in Computer Vision (Scale-Space 2001), Lecture Notes in Computer Science (LNCS), No. 2106, pp. 371--379, Vancouver, Canada.

E11.  Vanhamel I., Pratikakis I., and Sahli H. (2000). Automatic Watershed Segmentation of Color Images, In Goutsias, J. and Vincent, L. and Bloomberg, D.S.  Mathematical Morphology and its applications on Image and Signal processing (ISMM 2000), pages 207-214, Palo Alto, CA. USA, Kluwer Academic Press.

E10.  Vanhamel I., Pratikakis I., and Sahli H. (2000). Hierarchical multiscale watershed segmentation of color images. In Tremeau, A. and Laget, B.  First International Conference on Color in Graphics and Image Processing (CGIP'2000), Saint-Etienne - France, pages 94-99, Cepadues - 'Editions.

E9.   Pratikakis I., Sahli H., Deklerck R., and Cornelis, J. (1999). Semi-automatic segmentation and labelling of 3D brain anatomical structures. In Kappas, C. and Del Guerra, A. and Kolitsi, Z. and Damilakis, Y. and Theodorou, K. VI International Conference on Medical Physics, pages 269-275, Patras, Greece.

E8.   Pratikakis I., Sahli H., and Cornelis J. (1999). Hierarchical segmentation using dynamics of multiscale gradient watersheds. In Ersboell, B.K. and Johansen, P.  11th Scandinavian Conference on Image Analysis (SCIA'99), pages 577--584, Kangerlussuaq, Greenland.

E7.   Sahli H., Rusu S., Pratikakis I., and Yang L. (1999). Motion and structure from combined optical flow: correspondences approach. In Proceedings of SPIE's Annual International Symposium on Aerospace/Defense sensing, Simulation and Controls (Aerosense'99), vol. 2031, pages 208-215, Orlando.

E6.   Pratikakis I., Sahli H., and Cornelis J. (1997). Hierarchy determination of the gradient watershed adjacent groups. In Frydrych, M. and Parkkinen J. and Visa, A.  10th Scandinavian Conference on Image Analysis (SCIA'97), pages 685-692, Lappeenranta, Finland.

E5.   Pratikakis I., Deklerck R., Salomie A., and Cornelis J. (1997). Improving precise interactive delineation of 3D structures in medical images. In Lemke, H., editor,  Computer Assisted Radiology (CAR'97), pages 215-220, Berlin.

E4.   Christopoulos V., Pratikakis I., and Cornelis J. (1997). A hybrid method for image partitioning in low bit rate segmented image coding. In  IEEE 13th International Conference on Digital Signal Processing(DSP'97), pages 845-848, Santorini, Greece.

E3.  Pratikakis I., Sahli H., and Cornelis J. (1996). Watershed analysis and relaxation labelling: A cooperative approach for the interpretation of cranial - MR images using a statistical digital atlas. In Maragos, P., Schafer, R., and Butt, A., editors,  Mathematical Morphology and its applications on Image and Signal processing (ISMM'96), pages 425-432, Atlanta, Georgia, USA, Kluwer Academic Press, New York.

E2.   Truyen B., Pratikakis I., Xin Y., and Cornelis J. (1995). Hierarchical matching of deformable curves in medical images. In  Proceedings of the 2nd International Workshop on Image and Signal Processing (IWSIP'95), pages 284-291, Budapest.

E1.   Pratikakis I., Mertzios B., and Cornelis J. (1994). Segmentation and counting of ovisacs with morphological filtering in ultrasound images. In  Proceedings of the 1st International Workshop on Image and Signal Processing (IWSIP'94), pages 30-33, Budapest.