Color, Depth, and Size
Be able to explain the main three things that contribute to our ability to experience an object as being the same color.
Understand the differences/similarities between color and lightness constancy.
There are three main aspects of vision that allow the consistent perception of color in objects independent of illumination:
- Chromatic adaptation: when the light source contains a disproportionate amount of light in one section of the spectrum, the responses of the relevant photoreceptors are suppressed, shifting our perception away from the dominant wavelength.
- Local context: we compare all the colors in a scene to normalize our perception. This process takes place at a conscious and unconscious level.
- Prior knowledge: certain objects characterized by a distinct color will be perceived as this color despite differential illumination.
Light constancy concerns the relative reflectance of an object independent of illumination. Color constancy deals with the perception of color independent of illumination.
To learn more, take a look at this video about color and light constancy with great examples!
Cheryl Olman PSY 3031 Detailed Outline
Provided by: University of Minnesota
Download for free at http://vision.psych.umn.edu/users/caolman/courses/PSY3031/
License of original source: CC Attribution 4.0
Adapted by: Trevor Graham