An original displayed image is smoothed by visual perception. Human vision models are considered in the paper by Millan and Valencia (pp. 7684-7697) to build a method for color image sharpening. On the cover the image of a butterfly is presented in several versions (displayed versions on the left and perceived versions on the right). The top image is the original image, and the center image and bottom image are results of applying the method with low and intense depths, respectively.