Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Perceiving surface slant from deformation of optic flow.

F Domini1, C Caudek

  • 1Cognitive Technology Laboratory, AREA Science Park, Trieste, Italy. fulvio@john.berkeley.edu

Journal of Experimental Psychology. Human Perception and Performance
|April 17, 1999
PubMed
Summary

Perception of 3-D rotating planes revealed accurate tilt perception but systematic misperceptions of slant and angular velocity. This suggests a heuristic analysis of optic flow deformation influences visual perception.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Surface boundaries do not constrain a depth aftereffect.

Vision research·2010
Same author

Inconsistency of perceived 3D shape.

Vision research·2010
Same author

Segmentation in structure from motion: modeling and psychophysics.

Vision research·2001
Same author

3D after-effects are due to shape and not disparity adaptation.

Vision research·2001
Same author

Influence of a stereo surface on the perceived tilt of a monocular line.

Perception & psychophysics·2001
Same author

Color-specific depth mechanisms revealed by a color-contingent depth aftereffect.

Vision research·2000

Area of Science:

  • * Visual perception
  • * Computational neuroscience
  • * 3D motion perception

Background:

  • * Understanding how the human visual system perceives 3D surface orientation and motion from 2D projections is crucial.
  • * Orthographic projections of rotating random-dot planes are used to study visual processing of motion and structure.

Purpose of the Study:

  • * To investigate the accuracy of perceived surface orientation (tilt, slant) and angular velocity.
  • * To test a hypothesis that misperceptions arise from a heuristic analysis of optic flow deformation.

Main Methods:

  • * Analysis of perceived surface orientation and angular velocity from orthographic projections of 3D rotating random-dot planes.
  • * Comparison of perceived values with actual parameters to identify systematic misperceptions.

Related Experiment Videos

  • * Evaluation of a heuristic model based on optic flow deformation and prior probability assumptions.

    • Main Results:

    • * Tilt was accurately perceived.
    • * Slant and angular velocity were systematically misperceived.
    • * The proposed heuristic model, based on optic flow deformation, explained a significant portion of the misperceptions.
    • * Residual orientation anisotropies were observed, not fully explained by the heuristic.

    Conclusions:

    • * The visual system employs a heuristic analysis of optic flow deformation to estimate surface orientation and angular velocity.
    • * This heuristic leads to accurate tilt perception but systematic errors in slant and angular velocity perception.
    • * Further research is needed to account for residual orientation anisotropies in visual perception models.