June 2007
Volume 7, Issue 9
Vision Sciences Society Annual Meeting Abstract  |   June 2007
Opposite directions of motion enhance the perception of stereoscopic depth
Author Affiliations
  • James Dannemiller
    Department of Psychology, Rice University
  • Bogdan Iliescu
    Department of Psychology, Rice University
Journal of Vision June 2007, Vol.7, 819. doi:10.1167/7.9.819
  • Views
  • Share
  • Tools
    • Alerts
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      James Dannemiller, Bogdan Iliescu; Opposite directions of motion enhance the perception of stereoscopic depth. Journal of Vision 2007;7(9):819. doi: 10.1167/7.9.819.

      Download citation file:

      © ARVO (1962-2015); The Authors (2016-present)

  • Supplements

Previous studies have shown that oppositely directed motions enhance the perception of depth from disparity when the different directions are spatially intermixed as in a simulated rotating transparent cylinder defined by random dots. One argument for this enhancement is that opposite directions of motion help to solve the stereo correspondence problem. Is this enhancement observed when the opposite directions of motion are spatially segregated reducing or eliminating the ambiguity in stereo correspondence? Observers judged a step-change in depth in a small three-panel display with the motion direction in the middle panel opposite to that in the upper and lower panels (standard) against the depth in a simultaneously available display with the directions of motion the same in the three panels (test). Each panel was a window which contained a drifting grating of moderate contrast providing distinct features that should have simplified the solution of the correspondence problem. The disparity in the test display was varied to produce a forced-choice psychometric function from which we could estimate the point-of-subjective-equality at which the depths in the test and standard displays looked the same. For three observers, the PSE's indicated greatly enhanced depth in the standard display relative to the test display. Observers also judged the depths in both of these displays against a display with binocular disparity but no motion, and the results were consistent; displays with relative motion in opposite directions coupled with disparity always appeared to have more depth than displays with no relative motion coupled with similar amounts of disparity. Conclusion: the enhancement of stereoscopic depth provided by relative motion is not necessarily related its role in solving the stereo correspondence problem because it is also observed when the opposite directions are spatially segregated.

Dannemiller, J. Iliescu, B. (2007). Opposite directions of motion enhance the perception of stereoscopic depth [Abstract]. Journal of Vision, 7(9):819, 819a, http://journalofvision.org/7/9/819/, doi:10.1167/7.9.819. [CrossRef]

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.