01:830:305 Lecture Notes - Lecture 7: Color Constancy, Subjective Constancy, Ames Room

• School: Rutgers University
• Department: Psychology
• Course: 01:830:305
• Professor: J.Feldman

Document Summary

Second brightest moves up, gray becomes white, etc. Brain makes a number of assumptions (computations) may or may not be true, generally true, and use this to plug in missing data. Draws conclusions based on assumptions - what you believe. The letters in the dark and light squares are both the same color. This shows that we don"t see what"s on the retina - brain is speculating about what the surface is really made of, not direct retinal image. It"s the shadow - b square in shadow of the green cylinder. Squares in region of shadow are darker than would normally be. A & b actually same color in the retina. =light source in upper left, other side has shadow. Think its a brighter light source, see darker colors (black, blue) Think its a darker light source, see brighter colors (yellow, white) Lightness constancy: apparent surface re ectance remains constant despite changes in illumination.