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Related Experiment Video

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Generating Strictly Controlled Stimuli for Figure Recognition Experiments
05:39

Generating Strictly Controlled Stimuli for Figure Recognition Experiments

Published on: March 18, 2019

Globally inconsistent figure/ground relations induced by a negative part.

Sung-Ho Kim1, Jacob Feldman

  • 1Department of Psychology, Center for Cognitive Science, Rutgers University, New Brunswick, NJ, USA. sungho4@eden.rutgers.edu

Journal of Vision
|October 9, 2009
PubMed
Summary

Figure/ground perception involves complex visual cues. This study reveals that local visual cues can override global ones, causing inconsistent figure/ground assignments along object contours.

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Area of Science:

  • Visual Perception
  • Cognitive Neuroscience
  • Computational Vision

Background:

  • Figure/ground assignment is typically assumed to be globally consistent along object contours.
  • Previous models suggest a unified interpretation of boundaries, with one side consistently assigned as figure and the other as ground.

Purpose of the Study:

  • To investigate figure/ground assignment when local cues conflict with global cues.
  • To examine the role of "negative parts" (locally convex but globally concave regions) in border ownership.

Main Methods:

  • Developed a novel task measuring border ownership using local contour motion attribution.
  • Conducted two experiments to assess figure/ground assignment at local points along contours.

Main Results:

  • Increased salience of negative parts led to local reversals in border ownership.
  • Demonstrated inconsistencies in figure/ground assignments along contours.

Conclusions:

  • Figure/ground assignment is not strictly constrained by global cues.
  • Border ownership appears to be a locally autonomous process, influenced by salient local features.