ABSTRACT
Having rejected the picture theory of natural perception, we can make a start on picture perception. To see the environment is to extract information from the ambient array of light. What is it, then, to see a picture of something? The information in ambient light consists not of forms and colors but of invariants. Is it implied that the information in a picture does not consist of forms and colors but consists of invariants likewise? That sounds very odd, for we suppose that a picture is entirely composed of forms and colors.
