As with brightness, we tend to perceive objects as being of a constant color. On the stage red and blue spotlights are often used to establish a mood. Yet we do not perceive the flesh of the actors or singers to be red or blue. Explanation in terms of a learned color, as with brightness, has proven inadequate to explain color constancy. Again the total visual field must be considered.
Color constancy causes some strange effects.
For example, a shadow falling on red light looks green, even though none of the light is of the wavelengths we see as green. One explanation of this is that the apparent hue of the grey shadow is determined at least in part by the surrounding red light. A tin can is viewed as cylindrical, no matter what position it is in, because of 2. Define color constancy. Write the type of cue after each of the following.