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An algorithm to estimate mean traffic speed using uncalibrated cameras

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3 Author(s)
Dailey, D.J. ; Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA ; Cathey, F.W. ; Pumrin, S.

We present a novel approach to estimate traffic speed using a sequence of images from an uncalibrated camera. We assert that exact calibration is not necessary to estimate speed. Instead, we use: 1) geometric relationships inherently available in the image, 2) some common-sense assumptions that reduce the problem to a one-dimensional geometry, 3) frame differencing to isolate moving edges and track vehicles between frames, and 4) parameters from the distribution of vehicle lengths to estimate speed

Published in:

Intelligent Transportation Systems, IEEE Transactions on  (Volume:1 ,  Issue: 2 )