On Silhouettes, surfaces, and Sorensen

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)


Sorensen (2008) argued that when we see a silhouetted object, the part of the object that we see is its back surface. I argue against this claim and in favour of the thesis that the part of a silhouetted object that we see is its edge/edges. I provide a general 'Parts Perception Principle' (PPP) for determining which part/parts of a seen object are seen and show that it both provides the intuitively correct answers in cases of normal seeing and also that it favours the edge theory over the back-side-theory in cases of seeing silhouetted objects. I also briefly compare and contrast cases in which a subject can see part of a camouflaged object.

Original languageEnglish
Title of host publicationPerceptual Ephemera
PublisherOxford University Press
Number of pages25
ISBN (Print)9780198722304
Publication statusPublished - Jul 19 2018
Externally publishedYes


  • Camouflage
  • Causal theory of perception
  • Perception
  • Silhouettes
  • Sorensen
  • Surfaces
  • Vision

ASJC Scopus subject areas

  • General Arts and Humanities


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