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Form and texture in hierarchically constructed patterns.

R Kimchi, S E Palmer

    Journal of Experimental Psychology. Human Perception and Performance
    |August 1, 1982
    PubMed
    Summary
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    Perceptual organization of hierarchical patterns depends on element number and size. Large elements are seen as distinct parts, while numerous small elements create a unified texture or global form.

    Area of Science:

    • Cognitive Psychology
    • Visual Perception
    • Computational Neuroscience

    Background:

    • Hierarchical patterns are fundamental in visual processing.
    • Previous research on global versus local processing assumed direct mapping between geometrical and perceptual levels.

    Purpose of the Study:

    • To investigate how perceived organization of hierarchical patterns changes with element number and size.
    • To examine the relationship between geometrical properties and perceptual levels.

    Main Methods:

    • Five experiments using similarity judgments and verbal description tasks.
    • Systematic variation of element number and element size within hierarchical patterns.

    Main Results:

    • Fewer, larger elements are perceived as salient individual parts.

    Related Experiment Videos

  • Numerous, smaller elements lead to perception of a unified global form or texture.
  • Perceptual salience shifts from local elements to global form/texture as element density increases or size decreases.

    • Conclusions:

    • The mapping of geometrical levels to perceptual levels is not fixed.
    • Element number and relative size critically determine the perceived organization of hierarchical patterns.
    • Findings challenge assumptions in global versus local processing research.