113 research outputs found

    Egypt beyond the crisis : medium-term challenges for sustained growth

    Get PDF
    The paper analyzes the impact of the recent global crisis in the context of the previous two decades'growth and capital flows. Growth decomposition exercises show that Egyptian growth is driven mostly by capital accumulation. To estimate the share of labor in national income, the analysis adjusts the national accounts statistics to include the compensation of self-employed and non-paid family workers. Still, the share of labor, about 30 percent, is significantly lower than previously estimated. The authors estimate the output costs of the current crisis by comparing the output trajectory that would have prevailed without the crisis with the observed and revised gross domestic product projections for the medium term. The fall in private investment was the main driver of the output cost. Even if private investment recovers its pre-crisis levels, there is a permanent loss in gross domestic product per capita of about 2 percent with respect to the scenario without the crisis. The paper shows how the shock to investment is magnified due to the capital-intensive nature of the Egyptian economy: if the economy had the traditionally-used share of labor in income (40 percent), the output loss would have been reduced by half.Economic Theory&Research,Debt Markets,Access to Finance,Emerging Markets,Banks&Banking Reform

    New online signature acquisition system

    Full text link
    International audienceWe present a nonconstraining and low-cost online signature acquisition system that has been developed to enhance the performances of an existing multimodal biometric authentication system (based initially on both voice and image modalities). A laboratory prototype has been developed and validated for an online signature acquisition

    Contributions Ă  la caractĂ©risation & structuration d’images et de sĂ©quences vidĂ©o

    No full text
    The paper presents a summary of work in sequence analysis of images and video.In the first part, I present my work in spatio-temporal regularization based graphs to resolve open issues in image processing: the restoration of noisy images and sequences of missing data, and the classification of data in images. Several applications are proposed.To do this, we use some properties of the graph (energy, ...) as well as its intrinsic space obtained by a nonlinear dimensionality reduction analysis of random walks through the space.The second part is devoted to the analysis and characterization of video sequences. At first, I present a hybrid model of skin based on induction graphs and my work related to the convex segmentation by volume of a moving object using active contours, and optical flow. Then, a section is devoted to work from multidisciplinary projects related to the analysis of gestures and gaze. Databases share specific videos are analyzed using discrete regularization on graphs and spatio-temporal moments such as Zernike ....The last theme is dedicated to the analysis of real-time look where we focus on the prediction of gaze using Gaussian processes.Le mĂ©moire prĂ©sente une synthĂšse des travaux en analyse de sĂ©quences d’images et de vidĂ©o.En premiĂšre partie, je prĂ©sente mes travaux en rĂ©gularisation spatio-temporelle basĂ©e graphes pour rĂ©soudre des problĂ©matiques ouvertes en traitement des images : la restauration de sĂ©quences d'images bruitĂ©es et donnĂ©es manquantes, ainsi que la classification de donnĂ©es dans les images. Plusieurs applications sont proposĂ©es.Pour ce faire, nous exploitons certaines propriĂ©tĂ©s du graphe (Ă©nergie, ...) ainsi que son espace intrinsĂšque obtenu par une rĂ©duction non linĂ©aire de dimension de l’espace d’analyse grĂące aux marches alĂ©atoires.La seconde partie est consacrĂ©e Ă  l’analyse et caractĂ©risation de sĂ©quences vidĂ©o. Dans un premier temps, je prĂ©sente un modĂšle de peau hybride basĂ© sur les graphes d'induction ainsi que mes travaux liĂ©s Ă  la segmentation convexe en volume d’un objet en mouvement Ă  partir des contours actifs et du flot optique. Ensuite, un volet est consacrĂ© Ă  des travaux, issus de projets pluridisciplinaires, liĂ©s Ă  l’analyse de gestes et du regard. Des bases de vidĂ©os d'actions spĂ©cifiques sont analysĂ©es en utilisant la rĂ©gularisation discrĂšte sur graphe et les moments spatio-temporels tels que Zernike ....Enfin, le dernier thème abordé est dédié à l'analyse du regard en temps rĂ©el oĂč l'on se focalisera sur la prĂ©diction du regard en utilisant des processus gaussiens

    Coopération d'agents pour des services de recherche et de filtrage sur internet

    No full text
    @inproceedings{INV-CHAHIR-2005, author = {Chahir, Y.}, title = {Coopération d'agents pour des services de recherche et de filtrage sur internet}, booktitle = {CongrÚs international en informatique appliquée (Ciia'05)}, pages = {}, year = {2005}, address = {Bordj Bou Arréridj, Algérie} }International audienc

    A web filtering engine combining textual, structural and visual content-based analysis

    No full text

    Contributions Ă  la caractĂ©risation & structuration d’images et de sĂ©quences vidĂ©o

    No full text
    The paper presents a summary of work in sequence analysis of images and video.In the first part, I present my work in spatio-temporal regularization based graphs to resolve open issues in image processing: the restoration of noisy images and sequences of missing data, and the classification of data in images. Several applications are proposed.To do this, we use some properties of the graph (energy, ...) as well as its intrinsic space obtained by a nonlinear dimensionality reduction analysis of random walks through the space.The second part is devoted to the analysis and characterization of video sequences. At first, I present a hybrid model of skin based on induction graphs and my work related to the convex segmentation by volume of a moving object using active contours, and optical flow. Then, a section is devoted to work from multidisciplinary projects related to the analysis of gestures and gaze. Databases share specific videos are analyzed using discrete regularization on graphs and spatio-temporal moments such as Zernike ....The last theme is dedicated to the analysis of real-time look where we focus on the prediction of gaze using Gaussian processes.Le mĂ©moire prĂ©sente une synthĂšse des travaux en analyse de sĂ©quences d’images et de vidĂ©o.En premiĂšre partie, je prĂ©sente mes travaux en rĂ©gularisation spatio-temporelle basĂ©e graphes pour rĂ©soudre des problĂ©matiques ouvertes en traitement des images : la restauration de sĂ©quences d'images bruitĂ©es et donnĂ©es manquantes, ainsi que la classification de donnĂ©es dans les images. Plusieurs applications sont proposĂ©es.Pour ce faire, nous exploitons certaines propriĂ©tĂ©s du graphe (Ă©nergie, ...) ainsi que son espace intrinsĂšque obtenu par une rĂ©duction non linĂ©aire de dimension de l’espace d’analyse grĂące aux marches alĂ©atoires.La seconde partie est consacrĂ©e Ă  l’analyse et caractĂ©risation de sĂ©quences vidĂ©o. Dans un premier temps, je prĂ©sente un modĂšle de peau hybride basĂ© sur les graphes d'induction ainsi que mes travaux liĂ©s Ă  la segmentation convexe en volume d’un objet en mouvement Ă  partir des contours actifs et du flot optique. Ensuite, un volet est consacrĂ© Ă  des travaux, issus de projets pluridisciplinaires, liĂ©s Ă  l’analyse de gestes et du regard. Des bases de vidĂ©os d'actions spĂ©cifiques sont analysĂ©es en utilisant la rĂ©gularisation discrĂšte sur graphe et les moments spatio-temporels tels que Zernike ....Enfin, le dernier thème abordé est dédié à l'analyse du regard en temps rĂ©el oĂč l'on se focalisera sur la prĂ©diction du regard en utilisant des processus gaussiens

    Indexation de la vidéo numérique

    No full text

    Real time embedded moving objects detector

    No full text

    Spatialized visual features based image retrieval

    No full text
    • 

    corecore