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                <term xml:lang="fr">depth from defocus</term>
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                <term xml:lang="fr">flou optique</term>
                <term xml:lang="fr">primitives 3D</term>
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              <p>Nous présentons dans cet article la généralisation d'une méthode d'estimation locale de la profondeur sur les contours utilisant un couple d'images nette et floue. Après avoir positionné cette méthode de depth from defocus, initialement développée par T. Simon (Simon 1991), nous définissons les relations théoriques mettant en œuvre cette généralisation. De plus, nous apportons une solution à la critique de la sensibilité aux variations locales de luminance souvent formulée à l'égard de cette approche. Puis, nous quantifions l'amélioration apportée par l'application de la méthode à des images de synthèse parfaitement maîtrisées. Enfin, nous appliquons la méthode à une scène réelle et nous précisons les points à développer pour une bonne applicabilité dans un contexte réel.</p>
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