Vers une détection de piétons temps réel par apprentissage de forme dans l'image de profondeur

Abstract : This paper presents a method for detecting pedestrians in a depth image, established from a pair of calibrated cameras (stereoscopic head). We propose to learn the characteristics of a pedestrian thanks to a boosting type algorithm, using weak classifiers created from simple statistical characteristics of distance within a sub-window of the area of analysis. These assumptions will then be confirmed by a second, classic detector based on analysis of the visual appearance of pedestrians. Our resulting method allows for the detection of pedestrians at a rate close to real time, using the concept of integral image, applied to the calculation of 3D descriptors. The proposed method is compared with a traditional method for detecting vertical obstacles on a real annotated video sequence. Our method reduces the number of false positives by approximately 60% compared to an obstacle-detection method, while reducing the computation time.
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https://hal.inria.fr/inria-00610513
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Loïc Jourdheuil, Nicolas Allezard, Thierry Chateau. Vers une détection de piétons temps réel par apprentissage de forme dans l'image de profondeur. ORASIS - Congrès des jeunes chercheurs en vision par ordinateur, INRIA Grenoble Rhône-Alpes, Jun 2011, Praz-sur-Arly, France. ⟨inria-00610513⟩

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