Using wavelet filtering of the input image to study the mechanisms that bring about the Müller-Lyer visual illusion

I. I. Shoshina, S. V. Pronin, Yu E. Shelepin

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Various images of the M̈uller-Lyer figures have been obtained by digital filtering. The filtered images contained a definite spatial-frequency spectrum, predominantly low, medium, or high frequencies. The filtering was carried out by convolution of the images with wavelets that are the difference of two Gaussoids with half-width differing by a factor of 2. The equalization threshold of the M̈uller-Lyer figures was measured by presenting images subjected to digital processing and without processing, thereby measuring the threshold for bringing about the illusion. The M̈uller-Lyer illusion was caused by all the stimuli, but it was reliably larger in response to the presentation of the image with a predominantly low-frequency component. The modelling of the M̈uller-Lyer illusion must take into account the spatial-frequency spectrum of the test image and the characteristics of the pass-band filtering in the spatial-frequency channels of not only the primary but also the higher divisions of the visual system, which construct the envelope based on the primary filtering of the image.

Original languageEnglish
Pages (from-to)817-820
Number of pages4
JournalJournal of Optical Technology (A Translation of Opticheskii Zhurnal)
Volume78
Issue number12
DOIs
StatePublished - 1 Dec 2011
Externally publishedYes

Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)
  • Computational Mathematics
  • Applied Mathematics

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