Perception of circular heading from optical flow.

@article{Warren1991PerceptionOC,
  title={Perception of circular heading from optical flow.},
  author={William H Warren and Daniel R. Mestre and A. W. Blackwell and Mr. E. W. Morris},
  journal={Journal of experimental psychology. Human perception and performance},
  year={1991},
  volume={17 1},
  pages={28-43}
}
Observers viewed random-dot optical flow displays that simulated self-motion on a circular path and judged whether they would pass to the right or left of a target at 16 m. Two dots in two frames are theoretically sufficient to specify circular heading if the orientation of the rotation axis is known. Heading accuracies were better than 1.5 degrees with a ground surface, wall surface, and 3D cloud of dots, and were constant over densities down to 2 dots, consistent with the theory. However… CONTINUE READING

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