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Search Results: 1 - 10 of 9131 matches for " Najoua Essoukri Ben Amara "
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Multifont Arabic Characters Recognition Using HoughTransform and HMM/ANN Classification
Nadia Ben Amor,Najoua Essoukri Ben Amara
Journal of Multimedia , 2006, DOI: 10.4304/jmm.1.2.50-54
Abstract: Optical Characters Recognition (OCR) has been an active subject of research since the early days of computers. Despite the age of the subject, it remains one of the most challenging and exciting areas of research in computer science. In recent years it has grown into a mature discipline, producing a huge body of work. Arabic character recognition has been one of the last major languages to receive attention. This is due, in part, to the cursive nature of the task since even printed Arabic characters are in cursive form. This paper describes the performance of combining Hough transform and Hidden Markov Models in a multifont Arabic OCR system. Experimental tests have been carried out on a set of 85.000 samples of characters corresponding to 5 different fonts from the most commonly used in Arabic writing. Some promising experimental results are reported.
Overview and Advances in Arabic Optical Character Recognition
Najoua Essoukri Ben Amara,Noureddine Ellouze
Asian Journal of Information Technology , 2012,
Abstract: Despite the considerable research efforts, Arabic optical character recognition-AOCR is still far from being solved and remains a big challenge. The recorded results have not reached performances yet as thoroughly as other languages such as Latin, Japanese, or Chinese. This can be assigned to the morphological complexity of the Arabic script and to the lack of both supporting utilities and real world applications.Based on an extensive review of an important number of works on AOCR in its different forms- printed and handwritten- we propose in the first part of this paper an overview of the main problems encountered in this field. In the second part, we shall present a survey of research on AOCR, which would allow the evaluation of advances reached in this challenging field. Besides, this paper gives a rich list of related references to the interested reader.
Characterization of Dynamic Bayesian Network-The Dynamic Bayesian Network as temporal network
Nabil Ghanmi,Mohamed Ali Mahjoub,Najoua Essoukri Ben Amara
International Journal of Advanced Computer Sciences and Applications , 2011,
Abstract: In this report, we will be interested at Dynamic Bayesian Network (DBNs) as a model that tries to incorporate temporal dimension with uncertainty. We start with basics of DBN where we especially focus in Inference and Learning concepts and algorithms. Then we will present different levels and methods of creating DBNs as well as approaches of incorporating temporal dimension in static Bayesian network.
Characterization of Dynamic Bayesian Network
Nabil ghanmy,Mohamed Ali Mahjoub,Najoua Essoukri Ben Amara
Computer Science , 2012,
Abstract: In this report, we will be interested at Dynamic Bayesian Network (DBNs) as a model that tries to incorporate temporal dimension with uncertainty. We start with basics of DBN where we especially focus in Inference and Learning concepts and algorithms. Then we will present different levels and methods of creating DBNs as well as approaches of incorporating temporal dimension in static Bayesian network.
Dynamic Hierarchical Bayesian Network for Arabic Handwritten Word Recognition
Khaoula jayech,Nesrine Trimech,Mohamed Ali Mahjoub,Najoua Essoukri Ben Amara
Computer Science , 2014,
Abstract: This paper presents a new probabilistic graphical model used to model and recognize words representing the names of Tunisian cities. In fact, this work is based on a dynamic hierarchical Bayesian network. The aim is to find the best model of Arabic handwriting to reduce the complexity of the recognition process by permitting the partial recognition. Actually, we propose a segmentation of the word based on smoothing the vertical histogram projection using different width values to reduce the error of segmentation. Then, we extract the characteristics of each cell using the Zernike and HU moments, which are invariant to rotation, translation and scaling. Our approach is tested using the IFN / ENIT database, and the experiment results are very promising.
Contribution to the Fusion of Biometric Modalities by the Choquet Integral
Anouar Ben Khalifa,Najoua Essoukri BenAmara
International Journal of Image, Graphics and Signal Processing , 2012,
Abstract: In multimodal biometrics, modalities can be robust against the authentication of certain people and weak for others. The conventional fusion techniques such as the Product, Mean, AND, OR and the Majority Voting do not take into account this kind of behaviour. In this paper, we propose a new approach to fusion procedures in the context of biometric authentication. The proposed method is based on the exploration of the Choquet integral that takes into account the interactions between the terms and people through fuzzy measures. The fuzzy measures, the ones we have proposed, are based on the number of confusion, the entropy and the uncertainty function. The results have been validated in two databases: the first one is virtual, which is based on synthetic scores and the second one on the biometric modalities which are: face, off-line handwriting and off-line signature. The achieved results demonstrate the robustness of our approaches and their adaptability.
Le Frontières du Comparatisme de Anne Tomiche Anne Tomiche's 'Borders of Comparative Studies'
Radhouan Ben Amara
Between , 2011,
Abstract: In response to the report by Anne Tomiche on the frequent overlap between comparative literature and European literature, this paper aims to deal with some of the questions asked by Tomiche without any claim to reach definitive answers, but rather to highlight new questions and new considerations about the role of comparative literature today. Essential to the achievement of a "new humanism", as a compass needed to guide us in a concert of discordant voices, in a time when new frontiers are being established, comparative literature at this time requires an epistemological shift. In contrast to the universalist ideology, the role of the comparatist must now be reconsidered on an ethical level, aimed at overcoming certain forms of exclusion and marginalization that too often the concept of culture generates. The comparative literature, should be understood as a non-category literature, a literature of expatriation, landless, that refuses language barriers and/or cultural borders, open to all literatures of the world, in a constant exchange that can lead to the creation of a comprehensive system of interactions, which must not be identified with a theory, but should opt for a space, a desert where the theoretical reflection becomes objective and universalizes in differentiation. In response to the report by Anne Tomiche on the frequent overlap between comparative literature and European literature, this paper aims to deal with some of the questions asked by Tomiche without any claim to reach definitive answers, but rather to highlight new questions and new considerations about the role of comparative literature today. Essential to the achievement of a "new humanism", as a compass needed to guide us in a concert of discordant voices, in a time when new frontiers are being established, comparative literature at this time requires an epistemological shift. In contrast to the universalist ideology, the role of the comparatist must now be reconsidered on an ethical level, aimed at overcoming certain forms of exclusion and marginalization that too often the concept of culture generates. The comparative literature, should be understood as a non-category literature, a literature of expatriation, landless, that refuses language barriers and / or cultural borders, open to all literatures of the world, in a constant exchange that can lead to the creation of a comprehensive system of interactions, which must not be identified with a theory, but should opt for a space, a desert where the theoretical reflection becomes objective and universalizes in differentiation.
Frontiers and Thresholds in Rushdie's Writings Frontiers and Thresholds in Rushdie's Writings
Radhouan Ben Amara
Between , 2011,
Abstract: After a brief discussion of the main facets that a theme such as the border becomes, this paper examines how the works of Salman Rushdie have offered new perspectives on the interpretation of the role and the sense of the border. With the aid of some studies, such as those by Simmel and Derrida which highlight the complex phenomena of inclusion/exclusion/encounter that the boundary creates on a sociological, political, cultural and aesthetic level, it has been possible to reread some of the most meaningful works of one of the authors to which the theme of exile and migration has been devoting more attention. Works such as Shame, The Satanic Verses, Step Across This Line, and The Enchantress of Florence, in particular, become carriers of the reflection on the roots and influence through the use of a dialogic form at a linguistic and intertextual level, as well as through a constant theming of the frontier-crossing. After a brief discussion of the main facets that a theme such as the border becomes, this paper examines how the works of Salman Rushdie have offered new perspectives on the interpretation of the role and the sense of the border. With the aid of some studies, such as those by Simmel and Derrida which highlight the complex phenomena of inclusion/exclusion/encounter that the boundary creates on a sociological, political, cultural and aesthetic level, it has been possible to reread some of the most meaningful works of one of the authors to which the theme of exile and migration has been devoting more attention. Works such as Shame, The Satanic Verses, Step Across This Line, and The Enchantress of Florence, in particular, become carriers of the reflection on the roots and influence through the use of a dialogic form at a linguistic and intertextual level, as well as through a constant theming of the frontier-crossing.
A New proof of the CR Identity and related Topics
Gamara,Najoua; Ahmed,Ali Ben; Aribi,Amine;
Cubo (Temuco) , 2012, DOI: 10.4067/S0719-06462012000200003
Abstract: in this paper we give a new proof for "the cr identity" and deduce non existence results of positive solutions for semi-linear boundary value problems on star-shaped domains where is the sublaplacian of the heisenberg group , function on a star-shaped and bounded domain.
A New proof of the CR Identity and related Topics
Najoua Gamara,Ali Ben Ahmed,Amine Aribi
Cubo : A Mathematical Journal , 2012,
Abstract: En este artículo presentamos una nueva demostración de la identidad de CR Pohozaev sobre el grupo de Heisenberg y deducimos resultados sobre la no existencia de soluciones positivas para problemas semi-lineales con valores en la frontera sobre dominios estrellados donde es el sublaplaciano del grupo de Heisenberg Hn, g es una función de clase C1 sobre un dominio estrellado y acotado . In this paper we give a new proof for "the CR Identity" and deduce non existence results of positive solutions for semi-linear boundary value problems on star-shaped domains where is the sublaplacian of the Heisenberg group , function on a star-shaped and bounded domain.
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