TY - JOUR

T1 - Using wavelet filtering of the input image to study the mechanisms that bring about the Müller-Lyer visual illusion

AU - Shoshina, I. I.

AU - Pronin, S. V.

AU - Shelepin, Yu E.

PY - 2011/12/1

Y1 - 2011/12/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84857825284&partnerID=8YFLogxK

U2 - 10.1364/JOT.78.000817

DO - 10.1364/JOT.78.000817

M3 - Article

AN - SCOPUS:84857825284

VL - 78

SP - 817

EP - 820

JO - Journal of Optical Technology (A Translation of Opticheskii Zhurnal)

JF - Journal of Optical Technology (A Translation of Opticheskii Zhurnal)

SN - 1070-9762

IS - 12

ER -