Abstract
When we gaze the object, how much the amount of visual information is obtained. When the illumination conditin and the object are changed, how the amount of visual information is changed. There is a problem how to decide the relation between these quantitatively. In this paper, the theory to calculate the amount of visual information is proposed. The various effects on the amount of visual information have been calculated by the computer sisulations. The number of perceptible brightness levels and the number of minimum perceptible areas at photopic vision are obtained from the visual properties. These values correspond to the length and kind of the sign in the information theory. First, the capacity of visual information on image is calculated. Then, the amount of visual information on image is calculated. The calculations of visual information on digital image are performed to actual digital images, and the amounts of visual information are presented quantitatively.
