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


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    Title :

    Use of Uncalibrated Roadside CCTV Cameras to Estimate Mean Traffic Speed


    Contributors:
    D. J. Dailey (author) / F. W. Cathey (author) / S. Pumrin (author)

    Publication date :

    2001


    Size :

    36 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    An algorithm to estimate mean traffic speed using uncalibrated cameras

    Dailey, D.J. / Cathey, F.W. / Pumrin, S. | Tema Archive | 2000


    An algorithm to estimate mean traffic speed using uncalibrated cameras

    Dailey, D.J. / Cathey, F.W. / Pumrin, S. | IEEE | 2000


    An Algorithm to Estimate Mean Traffic Speed Using Uncalibrated Cameras

    Dailey, D. J. / Cathey, F. W. / Pumrin, S. | British Library Online Contents | 2000


    Algorithm for Estimating Mean Traffic Speed with Uncalibrated Cameras

    Dailey, Daniel J. / Li, Li | Transportation Research Record | 2000