| 2014 | ICFHR | ICFHR2014 Competition on Handwritten Document Image Binarization (H-DIBCO 2014). | Konstantinos Ntirogiannis, Basilis Gatos, Ioannis Pratikakis |
| 2013 | ICDAR | ICDAR 2013 Document Image Binarization Contest (DIBCO 2013). | Ioannis Pratikakis, Basilis Gatos, Konstantinos Ntirogiannis |
| 2012 | ICFHR | ICFHR 2012 Competition on Handwritten Document Image Binarization (H-DIBCO 2012). | Ioannis Pratikakis, Basilios Gatos, Konstantinos Ntirogiannis |
| 2011 | ICDAR | Binarization of Textual Content in Video Frames. | Konstantinos Ntirogiannis, Basilios Gatos, Ioannis Pratikakis |
| 2011 | ICDAR | ICDAR 2011 Document Image Binarization Contest (DIBCO 2011). | Ioannis Pratikakis, Basilios Gatos, Konstantinos Ntirogiannis |
| 2010 | ICFHR | H-DIBCO 2010 - Handwritten Document Image Binarization Competition. | Ioannis Pratikakis, Basilios Gatos, Konstantinos Ntirogiannis |
| 2009 | ICDAR | ICDAR 2009 Document Image Binarization Contest (DIBCO 2009). | Basilios Gatos, Konstantinos Ntirogiannis, Ioannis Pratikakis |
| 2009 | ICDAR | A Modified Adaptive Logical Level Binarization Technique for Historical Document Images. | Konstantinos Ntirogiannis, Basilios Gatos, Ioannis Pratikakis |
| 2008 | DAS | An Objective Evaluation Methodology for Document Image Binarization Techniques. | Konstantinos Ntirogiannis, Basilios Gatos, Ioannis Pratikakis |
| 2007 | ICDAR | Segmentation Based Recovery of Arbitrarily Warped Document Images. | Basilios Gatos, Ioannis Pratikakis, Konstantinos Ntirogiannis |