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Symmetry Modulates the Amplitude Spectrum Slope Effect on Visual Preference
Version 1
: Received: 23 October 2020 / Approved: 23 October 2020 / Online: 23 October 2020 (20:47:00 CEST)
A peer-reviewed article of this Preprint also exists.
Wu, C.-C.; Chen, C.-C. Symmetry Modulates the Amplitude Spectrum Slope Effect on Visual Preference. Symmetry 2020, 12, 1820. Wu, C.-C.; Chen, C.-C. Symmetry Modulates the Amplitude Spectrum Slope Effect on Visual Preference. Symmetry 2020, 12, 1820.
Abstract
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 do 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-shape 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. Such effects can be described by a quadratic function of the spectrum slope. That is, preference is an inverted U-shape function of spectrum slope whose intercept is determined by the number of symmetry axis. In addition, the interaction between the two factors is manifested as the modulation depth of the quadratic function.
Keywords
amplitude spectrum; image statistics; complexity; aesthetics; phase
Subject
Social Sciences, Cognitive Science
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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