原文传递 ALGORITHM FOR ESTIMATING MEAN TRAFFIC SPEED WITH UNCALIBRATED CAMERAS.
题名: ALGORITHM FOR ESTIMATING MEAN TRAFFIC SPEED WITH UNCALIBRATED CAMERAS.
作者: Dailey-DJ; Li-L
关键词: Algorithms-; Estimating-; Traffic-speed; Video-cameras
摘要: Presented is a new algorithm for estimating speed by using a sequence of video images from an uncalibrated camera. An assertion is made that exact calibration is not necessary for estimating speed. Instead, the following are used to propose a novel method that extracts scale information and estimates speed: (a) geometric relationships inherently available in the image; (b) some common sense assumptions that reduce the problem to a one-dimensional geometry; (c) frame differencing to isolate moving edges and to track vehicles between frames; and (d) the distribution of vehicle lengths.
总页数: Transportation Research Record. 2000. (1719) pp27-32 (5 Fig., 20 Ref.)
报告类型: 科技报告
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