Retinex theory of color vision

Definition

Retinex theory of color vision explains how the human visual system perceives colors consistently under varying lighting conditions. It suggests that the brain compares different areas of the retina to maintain color constancy.

5 Must Know Facts For Your Next Test

1. The term 'retinex' is a combination of 'retina' and 'cortex,' highlighting the collaboration between these parts of the visual system.
2. Retinex theory was developed by Edwin Land, who also invented the Polaroid camera.
3. The theory addresses the phenomenon of color constancy, where colors appear the same under different lighting conditions.
4. According to retinex theory, the brain processes information from three different types of cone cells in the retina to determine colors.
5. This theory contrasts with trichromatic and opponent-process theories by emphasizing higher-level cognitive processing in color perception.

Review Questions

• Who developed the retinex theory of color vision?
• What phenomenon does retinex theory primarily address?
• How does retinex theory differ from trichromatic and opponent-process theories?

Related terms

Color Constancy: A feature of the human color perception system which ensures that perceived colors remain relatively constant under varying illumination conditions.

Trichromatic Theory:

A theory of color vision stating that there are three types of cone cells in the retina sensitive to red, green, and blue light.

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