Optical illusion analysis device, optical illusion-added image generation device that adds illusion to the perception of the original image, optical illusion analysis method, optical illusion-added image generation method that adds illusion to the perception of the original image, and program

摘要

The present invention performs multi-resolution decomposition on a color component of image data using an orientation-selective wavelet frame or orientation-selective filter bank, obtains a subband signal, and adds the obtained subband signal. When reconstructing an image, between the decomposition phase and the synthesis phase in multi-resolution decomposition, the smaller the value of the decomposition detail coefficient output from the decomposition phase, the larger the energy of the decomposition detail coefficient. The coefficient processing is performed so that the value is suppressed to a small value and the smaller value is increased as the energy of the decomposition detail coefficient is smaller. Alternatively, coefficient processing is performed so as to be reversed.