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The web has an enormous collection of live cameras that image parks, roads, cities, beaches, mountains, buildings, parking lots. There are a wide variety of problems that could effectively use this massively distributed, scalable, and already existing camera network. To move towards this goal, this paper discusses ongoing research with the AMOS (Archive of Many Outdoor Scenes) database, which includes...
We present an algorithm for extracting parametric descriptions of roads from motion cues inherent in static video of traffic. First, statistics of spatio-temporal derivatives are accumulated from a static video. We derive new energy terms for fitting B-spline snakes to roads by aligning their direction and speed to be maximally consistent with the spatio-temporal derivatives. Due to the constraint...
We consider the special case of tracking objects in highly structured scenes. In the context of vehicle tracking in urban environments, we offer a fully automatic, end-to-end system that discovers and parametrizes the lanes along which vehicles drive, then uses just these pixels to simultaneously track dozens of objects. This system includes a novel active contour energy function used to parametrize...
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