| 2016 | ICFHR | ICFHR2016 Competition on Multi-script Writer Demographics Classification Using "QUWI" Database. | Chawki Djeddi, Somaya Al-Madeed, Abdeljalil Gattal, Imran Siddiqi, Abdellatif Ennaji, Haikal El Abed |
| 2015 | ICDAR | ICDAR2015 competition on Multi-script Writer Identification and Gender Classification using 'QUWI' Database. | Chawki Djeddi, Somaya Al-Madeed, Abdeljalil Gattal, Imran Siddiqi, Labiba Souici-Meslati, Haikal El Abed |
| 2014 | DAS | Evaluation of Texture Features for Offline Arabic Writer Identification. | Chawki Djeddi, Labiba Souici-Meslati, Imran Siddiqi, Abdellatif Ennaji, Haikal El Abed, Abdeljalil Gattal |
| 2014 | DAS | NIST 2013 Open Handwriting Recognition and Translation (Open HaRT'13) Evaluation. | Audrey Tong, Mark A. Przybocki, Volker Mrgner, Haikal El Abed |
| 2014 | ICFHR | LAMIS-MSHD: A Multi-script Offline Handwriting Database. | Chawki Djeddi, Abdeljalil Gattal, Labiba Souici-Meslati, Imran Siddiqi, Youcef Chibani, Haikal El Abed |
| 2013 | ICDAR | ICDAR2013 Competition on Multi-font and Multi-size Digitally Represented Arabic Text. | Fouad Slimane, Slim Kanoun, Haikal El Abed, Adel M. Alimi, Rolf Ingold, Jean Hennebert |
| 2013 | ICIAP | Database for Arabic Printed Text Recognition Research. | Faten Kallel Jaiem, Slim Kanoun, Maher Khemakhem, Haikal El Abed, Jihain Kardoun |
| 2013 | ICPRAM | Baseline Estimation in Arabic Handwritten Text-Line - Evaluation on AHTID/MW Database. | Anis Mezghani, Slim Kanoun, Souhir Bouaziz, Maher Khemakhem, Haikal El Abed |
| 2012 | DAS | Document Preprocessing System - Automatic Selection of Binarization. | Ines Ben Messaoud, Hamid Amiri, Haikal El Abed, Volker Mrgner |
| 2012 | ICFHR | A Multilevel Text-Line Segmentation Framework for Handwritten Historical Documents. | Ines Ben Messaoud, Hamid Amiri, Haikal El Abed, Volker Mrgner |
| 2012 | ICFHR | Region Based Local Binarization Approach for Handwritten Ancient Documents. | Ines Ben Messaoud, Hamid Amiri, Haikal El Abed, Volker Mrgner |
| 2012 | ICFHR | Off-Line Features Integration for On-Line Handwriting Graphemes Modeling Improvement. | Houcine Boubaker, Aymen Chaabouni, Najiba Tagougui, Monji Kherallah, Adel M. Alimi, Haikal El Abed |
| 2012 | ICFHR | KHATT: Arabic Offline Handwritten Text Database. | Sabri A. Mahmoud, Irfan Ahmad, Mohammad R. Alshayeb, Wasfi G. Al-Khatib, Mohammad Tanvir Parvez, Gernot A. Fink, Volker Mrgner, Haikal El Abed |
| 2012 | ICFHR | A Database for Arabic Handwritten Text Image Recognition and Writer Identification. | Anis Mezghani, Slim Kanoun, Maher Khemakhem, Haikal El Abed |
| 2011 | ICDAR | A design of a preprocessing framework for large database of historical documents. | Ines Ben Messaoud, Haikal El Abed, Volker Mrgner, Hamid Amiri |
| 2011 | ICDAR | International Conference on Document Analysis and Recognition (ICDAR 2011) - Competitions Overview. | Haikal El Abed, Liu Wenyin, Volker Mrgner |
| 2011 | ICDAR | Multi-fractal Modeling for On-line Text-Independent Writer Identification. | Aymen Chaabouni, Houcine Boubaker, Monji Kherallah, Adel M. Alimi, Haikal El Abed |
| 2011 | ICDAR | Combining of Off-line and On-line Feature Extraction Approaches for Writer Identification. | Aymen Chaabouni, Houcine Boubaker, Monji Kherallah, Adel M. Alimi, Haikal El Abed |
| 2011 | ICDAR | ICDAR 2011 - French Handwriting Recognition Competition. | Emmanuele Grosicki, Haikal El Abed |
| 2011 | ICDAR | Online Arabic Handwriting Recognition Competition. | Monji Kherallah, Najiba Tagougui, Adel M. Alimi, Haikal El Abed, Volker Mrgner |
| 2011 | ICDAR | ICDAR 2011 - Arabic Handwriting Recognition Competition. | Volker Mrgner, Haikal El Abed |
| 2011 | ICDAR | New Binarization Approach Based on Text Block Extraction. | Ines Ben Messaoud, Hamid Amiri, Haikal El Abed, Volker Mrgner |
| 2011 | ICDAR | ICDAR 2011 - Arabic Recognition Competition: Multi-font Multi-size Digitally Represented Text. | Fouad Slimane, Slim Kanoun, Haikal El Abed, Adel M. Alimi, Rolf Ingold, Jean Hennebert |
| 2010 | ICFHR | International Conference on Frontiers in Handwriting Recognition (ICFHR 2010) - Competitions Overview. | Haikal El Abed, Volker Mrgner, Michael Blumenstein |
| 2010 | ICFHR | Fuzzy Segmentation and Graphemes Modeling for Online Arabic Handwriting Recognition. | Houcine Boubaker, Aymen Chaabouni, Monji Kherallah, Adel M. Alimi, Haikal El Abed |
| 2010 | ICFHR | ICFHR 2010 - Arabic Handwriting Recognition Competition. | Volker Mrgner, Haikal El Abed |
| 2010 | ICFHR | Automatic Annotation for Handwritten Historical Documents Using Markov Models. | Ines Ben Messaoud, Haikal El Abed |
| 2010 | ICPR | A Framework for the Combination of Different Arabic Handwritten Word Recognition Systems. | Haikal El Abed, Volker Mrgner |
| 2010 | ICPR | Online Arabic Handwriting Modeling System Based on the Graphemes Segmentation. | Houcine Boubaker, Abdelkarim Elbaati, Monji Kherallah, Adel M. Alimi, Haikal El Abed |
| 2010 | ICPR | Unsupervised Block Covering Analysis for Text-Line Segmentation of Arabic Ancient Handwritten Document Images. | Wafa Boussellaa, Abderrazak Zahour, Haikal El Abed, Abdellatif BenAbdelhafid, Adel M. Alimi |
| 2010 | ICPR | Fractal and Multi-fractal for Arabic Offline Writer Identification. | Aymen Chaabouni, Houcine Boubaker, Monji Kherallah, Adel M. Alimi, Haikal El Abed |
| 2009 | ICDAR | How to Improve a Handwriting Recognition System. | Haikal El Abed, Volker Mrgner |
| 2009 | ICDAR | ICDAR 2009 Online Arabic Handwriting Recognition Competition. | Haikal El Abed, Volker Mrgner, Monji Kherallah, Adel M. Alimi |
| 2009 | ICDAR | Enhanced Text Extraction from Arabic Degraded Document Images Using EM Algorithm. | Wafa Boussellaa, Aymen Bougacha, Abderrazak Zahour, Haikal El Abed, Adel M. Alimi |
| 2009 | ICDAR | Arabic Handwriting Recognition Using Restored Stroke Chronology. | Abdelkarim Elbaati, Houcine Boubaker, Monji Kherallah, Abdel Ennaji, Haikal El Abed, Adel M. Alimi |
| 2009 | ICDAR | ICDAR 2009 Handwriting Recognition Competition. | Emmanuele Grosicki, Haikal El Abed |
| 2009 | ICDAR | Invariant Primitives for Handwritten Arabic Script: A Contrastive Study of Four Feature Sets. | Sofiene Haboubi, Samia Maddouri, Noureddine Ellouze, Haikal El Abed |
| 2009 | ICDAR | Combining Multiple HMMs Using On-line and Off-line Features for Off-line Arabic Handwriting Recognition. | Mahdi Hamdani, Haikal El Abed, Monji Kherallah, Adel M. Alimi |
| 2009 | ICDAR | Off-line handwriting recognition system based on GA and visual encoding. | Monji Kherallah, Haikal El Abed, Fatma Bouri, Abdelkarim El Baati, Adel M. Alimi |
| 2009 | ICDAR | ICDAR 2009 Arabic Handwriting Recognition Competition. | Volker Mrgner, Haikal El Abed |
| 2007 | ICDAR | Comparison of Different Preprocessing and Feature Extraction Methods for Offline Recognition of Handwritten ArabicWords. | Haikal El Abed, Volker Mrgner |
| 2007 | ICDAR | Arabic Handwriting Recognition Competition. | Volker Mrgner, Haikal El Abed |
| 2007 | ICDAR | Strategies for Large Handwritten Farsi/Arabic Lexicon Reduction. | Saeed Mozaffari, Karim Faez, Volker Mrgner, Haikal El Abed |
| 2005 | ICDAR | Arabic Handwriting Recognition Competition. | Volker Mrgner, Mario Pechwitz, Haikal El Abed |