Evaluation of Fluctuations and Beauty for Tight, Gathered, Flared, Circular, and Pleated Skirts Using Frequency Analysis

Abstract

  Frequency analysis was applied to characterize the beauty and comfort of silhouettes and surface textures for tight, gathered, flared, circular, and pleated skirts in full and half sizes. The two-dimensional (2D) power spectrum of the skirt image captured by a digital camera was transformed by the Fourier method. A one-dimensional (1D) power spectrum, P(f), was obtained from the radial frequency (f) distribution of the 2D power spectrum. Because there was a good linear relationship between log P(f) and log f for all the skirts used in this study, we estimated the slope of a line, α, for each of them. The α-value is the coefficient of the 1/f^α fluctuation. The tendency of the difference in the beauty between full-size and half-size in silhouettes and textures for the five types of skirts was discussed in relation to the α value.