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This lecture describes a multiyear effort at DaimlerChrysler towards developing a video-based pedestrian safety system. It covers the typical stages of system design: from market need analysis, system specification and implementation, to evaluation and user acceptance. It first discusses how accident statistics, existing pedestrian protection concepts, and technical feasibility, influence system specifications. The resulting prototype system consist of three components: pedestrian sensing (perception), risk estimation (reasoning), and warning/control initiation (action). The sensing component uses a stereo camera to detect pedestrians in front of a moving vehicle, and estimate relative trajectories. The lecture describes the various vision modules that have been developed for this purpose, based on depth, shape, motion, and texture cues. Finally, recent results are present from large-scale field tests on pedestrian protection, on a test track and in real urban traffic, as part of the EU project SAVE-U, completed August 2005.
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