“Optical flow, geometric field of view, and requested vehicle velocity” by Mourant, Ahmad, Adetiloye and Jaeger

  • ©Ronald R. Mourant, Najla Ahmad, Charles Adetiloye, and Beverly K. Jaeger




    Optical flow, geometric field of view, and requested vehicle velocity



    In a simulated driving scenario, we investigated the production of vehicle velocity at 30 and 60 mph while varying the amount of optical flow (roadside trees versus no trees) and the geometric field of view (25, 55, and 85 horizontal degrees). Participant drivers were significantly less accurate in producing vehicle velocities of 30 mph as contrasted with those of the 60 mph target set. On average, the produced velocities were overestimated by 20 mph for the 30 mph target set. This may be due to an inability of driving simulators to produce authentic optical flows when traversing at 30 mph or lower velocities.


    1. Adetiloye, C., Wu, Q., and Mourant, R. 2005. Perception of optical flow and geometric field of view, (poster) Proceedings the 32nd International Conference on Computer Graphics and Interactive Techniques (SIGGRAPH 2005).
    2. Beall, A. C. and Loomis, J. M. 1996. Visual control of steering without course information. Perception, 25, 481–494.
    3. Land, M. F. and Lee, D. N. 1994. Where we look when we steer. Nature, 369, 742–744.

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