Abstract
For better image-texture analysis and interpretation, this paper proposes an index for evaluating visibility of Feature Composite Moving images (termed "FCM image") inducing visual illusion (i.e., pseudo-rotational and persistent of vision). The animation-like FCM image is produced by continuously displaying emboss processing-based images (i.e., shade images) according to eight directions of light sources. On the assumption that the fluctuation of digital number values (i.e., spatial frequency components) in each pixel of FCM image, which changes every second, is reflected in the visibility of texture features in FCM image, the power spectrums for those fluctuations calculated with Discrete Fourier Transform are grouped into 40 classes which are delineated on Visibility Evaluation Map (termed "VE Map"). Through the experiments, the result indicates that the VE map is useful for quantitatively evaluating the visibility of various kinds of texture features in the images.
