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Antonio Peta1, Carlo Fantoni1, Walter Gerbino1

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Mid-level processes influence image segmentation and completion. Contour properties like connectability and curvature polarity compete with symmetry, impacting visual perception.

Keywords:
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Area of Science:

  • Cognitive Psychology
  • Computational Neuroscience
  • Computer Vision

Background:

  • Mid-level vision processes are crucial for interpreting complex visual scenes.
  • Image segmentation and completion involve organizing visual input into coherent objects.
  • The interplay between contour properties and symmetry in these processes is not fully understood.

Purpose of the Study:

  • To investigate the role of mid-level visual processes in image segmentation and completion.
  • To determine how contour curvature polarity and symmetry influence these visual tasks.
  • To examine the impact of priming and cue congruency on shape perception.

Main Methods:

  • Two experiments were conducted using primed matching tasks with visual stimuli.
  • Stimuli included target shapes varying in contour curvature polarity and symmetry.
  • Composite occlusion displays manipulated T-junction information and geometric features.

Main Results:

  • Priming significantly affected matching performance in Experiment 1.
  • Contour connectability and curvature polarity were identified as key factors in segmentation and completion.
  • Symmetry's influence was found to compete with these contour-based factors.

Conclusions:

  • Mid-level visual processes are significantly influenced by contour properties.
  • Contour connectability and curvature polarity play a substantial role in image segmentation and completion.
  • These factors can effectively compete with symmetry in visual processing.