PSY 1101 Lecture Notes - Lecture 23: Relative Luminance, Color Constancy, Immanuel Kant

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1101
• Professor: Rosalinde Klempan

Document Summary

Perceptual constancy this is perceiving objects as unchanging (having consistent color, brightness, shape and size) even ass illumination and retinal images change. We much recognize objects without being deceived by changes in their color, brightness, shape or size. Perceptual constancy is a top down process. Our experience of color depends on an object"s context color constancy perceiving familiar objects as having consistent color, even. We see color due to our brain"s computations of the light reflected by an if changing illumination alters the wave-lengths reflected by the objects. Brightness constancy also called lightness constancy depends on context, we object relative to the objects surrounding it perceive constant brightness even when illumination varies. Perception of constancy depends on relative luminance which is the amount of light an object reflect relative to its surroundings. We perceive objects not in isolation but in their environmental context: this is important for artists, interior decorators, clothing designers, comparisons govern over perceptions distance varies.