STEREOACUITY AND BINOCULAR CORRESPONDENCE

  • Rangel, Yolanda (PI)
  • MCKEE, SUZANNE (PI)
  • MCKEE, SUZANNE (PI)
  • MCKEE, SUZANNE (PI)
  • MCKEE, SUZANNE P. (PI)

Project Details

Description

Binocular correspondence is the study of how the monocular
images are correctly fused in normal binocular vision, creating a
sense of depth. In natural scences, there is usually considerable
ambiguity about the binocular matching of local elements within
each monocular half-image. For the past three years, we have
used simple repetitive patterns (wallpaper stereograms) to explore
the rules which control human stereo matching. Stereo matching
of a long horizontal row of points can be described as follows:
coarse features, such as edges or gaps in the row, are matched
first. A plane interpolated between the positions in depth
assigned to these coarse features then guides the matching of the
intervening points. What is the mechanism of this interpolated
matching? The proposed research will address the following questions: 1)
Does the stereo system use the unambiguous matches (the edges)
detected by coarse spatial filters to weight the numerous
potential matches detected by fine spatial filters selectively? 2)
What role does the relative contrast within different spatial
bandwidths play in the relative weighting of the matches detected
by coarse and fine spatial filters? 3) Are brightness and
orientation also important dimensions in stereo matching? 4) If
stereo matching is based on local cross-correlation of the
monocular half-images, what is the size and disparity range of
this operation? 5) Can we find evidence for signals in many depth
planes using an adaptation paradigm? A final series of experiments will examine the relationship
between incremental judgments of disparity (delta d/d) and
incremental judgments of monocular distance (delta s/s) to
determine if contemporary models of hyperacuity can be extended
to the disparity domain as well.
StatusFinished
Effective start/end date31/12/8931/12/07

Funding

  • National Eye Institute
  • National Eye Institute
  • National Eye Institute
  • National Eye Institute
  • National Eye Institute

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