Abstract
It is important to relate the physiological characteristics of the subject to the physical parameters of the image being viewed. In this study, we employed image analysis to extract the spatial frequency characteristics associated with fixation information; this information provides the visual physiological responses of the subjects viewing stationary images. The fast Fourier transform (FFT) technique was applied to a circular-shaped area of each of the images and the slope of the regression curve fitted to the power spectral density was determined as β value. The centers of the selected circular areas of each image were set as fixation points with respect to a viewer. We observed a significant difference in the β values in the vicinity of the two fixation points corresponding to long and short fixation durations. The results suggest that the physiological responses constituting fixation information can extract the physical properties of an image.
