Color Basics
Mixing paints, dyes, or pigments is an example of this type of color mixing.
What is subtractive color mixing?
This is the least numerous cone type in the human retina.
What is S-Cone?
When one object partially blocks another, the blocked object looks farther away.
What is occlusion?
This term means the perception of depth that arises from the two eyes' slightly different views.
What is stereopsis?
Stationary stimuli flashed in rapid succession at different locations, as in movies, produce this.
What is apparent motion?
These are the primaries for additive mixing with colored lights or computer screens.
What are red, green, and blue?
These are the two pairs of opponent colors.
What are red-green and blue-yellow?
Distant mountains looking hazier, bluer, and lower in contrast illustrate this cue.
What is aerial perspective?
An object nearer to the observer than the horopter produces this type of disparity.
What is crossed disparity?
After staring at a waterfall, a stationary scene appears to drift upward. This is the effect.
What is the motion aftereffect?
Two physically different lights that look identical to an observer are called these.
What are metamers?
The L - M signal is thought to underlie this opponent channel.
What is the red-green channel?
Parallel railroad tracks appearing to converge toward the horizon illustrate this cue.
What is linear perspective?
This small region is where disparate images are combined into a single percept.
What is Panum's fusional area?
The direction of motion of a local feature is ambiguous. This is the problem.
What is the aperture problem?
This is the tendency for an object to look roughly the same color despite changes in the illuminant.
What is color constancy?
This neurological condition is the result of a sensory experiences being processed by more than on primary perceptual cortex.
What is synesthesia?
Judging a coin's distance by how large it looks, given its typical size, uses this cue.
What is familiar size?
Deciding which feature in the left eye's image matches which feature in the right eye's image is this problem.
What is the correspondence problem?
This is the pattern of visual motion we experience as we move through space.
What is optic flow?
This principle states that an infinite number of wavelength and intensity combinations can produce the same response in a single photoreceptor.
What is univariance?
A person missing L-cones (protanopia) will most likely have difficulty with this.
What is red-green discrimination?
Street chalk art of this type looks correct only from a particular vantage point.
What is anamorphic art?
These two constraints help the visual system solve the stereo correspondence problem.
What are uniqueness and continuity?
This midbrain structure is involved in controlling eye movements.
What is the superior colliculus?