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Article

Symmetry Modulates the Amplitude Spectrum Slope Effect on Visual Preference

1
Department of Psychology, Fo Guang University, Yilan 262307, Taiwan
2
Department of Psychology, National Taiwan University, Taipei 106319, Taiwan
*
Author to whom correspondence should be addressed.
Symmetry 2020, 12(11), 1820; https://doi.org/10.3390/sym12111820
Received: 14 August 2020 / Revised: 29 October 2020 / Accepted: 31 October 2020 / Published: 3 November 2020
(This article belongs to the Special Issue Symmetry of Perception and Behaviour)
Within the spectrum of a natural image, the amplitude of modulation decreases with spatial frequency. The speed of such an amplitude decrease, or the amplitude spectrum slope, of an image affects the perceived aesthetic value. Additionally, a human observer would consider a symmetric image more appealing than they would an asymmetric one. We investigated how these two factors jointly affect aesthetic preferences by manipulating both the amplitude spectrum slope and the symmetric level of images to assess their effects on aesthetic preference on a 6-point Likert scale. Our results showed that the preference ratings increased with the symmetry level but had an inverted U-shaped relation to amplitude spectrum slope. In addition, a strong interaction existed between symmetry level and amplitude spectrum slope on preference rating, in that symmetry can amplify the amplitude spectrum slope’s effects. A quadratic function of the spectrum slope can describe such effects. That is, preference is an inverted U-shaped function of spectrum slope whose intercept is determined by the number of symmetry axes. The modulation depth of the quadratic function manifests the interaction between the two factors. View Full-Text
Keywords: amplitude spectrum; image statistics; complexity; aesthetics; phase amplitude spectrum; image statistics; complexity; aesthetics; phase
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MDPI and ACS Style

Wu, C.-C.; Chen, C.-C. Symmetry Modulates the Amplitude Spectrum Slope Effect on Visual Preference. Symmetry 2020, 12, 1820. https://doi.org/10.3390/sym12111820

AMA Style

Wu C-C, Chen C-C. Symmetry Modulates the Amplitude Spectrum Slope Effect on Visual Preference. Symmetry. 2020; 12(11):1820. https://doi.org/10.3390/sym12111820

Chicago/Turabian Style

Wu, Chia-Ching, and Chien-Chung Chen. 2020. "Symmetry Modulates the Amplitude Spectrum Slope Effect on Visual Preference" Symmetry 12, no. 11: 1820. https://doi.org/10.3390/sym12111820

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