Centre-surround effects on perceived orientation in complex images

Erin Goddard, Colin W. G. Clifford, Samuel G. Solomon

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Using the simultaneous tilt illusion [Gibson, J., & Radner, M. (1937). Adaptation, after-effect and contrast in the perception of tilted lines. Journal of Experimental Psychology, 12, 453–467], we investigate the perception of orientation in natural images and textures with similar statistical properties. We show that the illusion increases if observers judge the average orientation of textures rather than sinusoidal gratings. Furthermore, the illusion can be induced by surrounding textures with a broad range of orientations, even those without a clearly perceivable orientation. A robust illusion is induced by natural images, and is increased by randomising the phase spectra of those images. We present a simple model of orientation processing that can accommodate most of our observations.
Original languageEnglish
Pages (from-to)1374-1382
Number of pages9
JournalVision Research
Volume48
Issue number12
DOIs
Publication statusPublished - 2008
Externally publishedYes

Keywords

  • Tilt illusion
  • Contextual modulation
  • Natural scenes
  • Visual cortex
  • Spatial vision

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