Monocular Cues
What is Interposition?
If one object partially blocks our view of another, we perceive it as being closer.
Perceiving an object as having a constant size, even if the distance between you and the object changes.
What is Size Constancy?
The perceptual tendency to organize stimuli into coherent groups.
What is Grouping?
Depth cues that depend on the use of two eyes.
What are Binocular Cues?
What is Texture Gradient?
A gradual change from a coarse, distinct texture to a fine, indistinct texture signals increasing distance.
Perceiving the color of familiar objects as constant, even if light changes the wavelengths reflected by the object.
What is Color Constancy?
We see differences and similarities in an image and we group together figures that are similar to each other.
What is Similarity?
The extent to which the eyes converge inward when looking at an object.
What is Convergence?
What is Relative Motion (Motion Parallax)?
As we move, objects that are actually stable appear to move.
A door casts an increasingly trapezoidal image on our retinas as it opens, yet we still perceive it as rectangular.
What is Shape Constancy?
Preferring complete shapes, we automatically fill in gaps between elements to perceive a complete image.
What is Closure?
When the brain compares two images, the difference between them provides an important cue to the relative distance of different objects.
What is Retinal Disparity?
What is Linear Perspective?
This can contribute to rail-crossing accidents by leading people to overestimate a train’s distance.
The perception that the apparent brightness an object remains more or less the the same under different luminance conditions.
What is Brightness Constancy (Lightness Constancy)?
Objects that are near each other tend to be grouped together.
What is proximity?
This is what you see when you hold two index fingers about 5 inches in front of your eyes, with their tips half an inch apart, and look beyond them.
What is the Floating Finger Sausage?
This illusion can contribute to accidents, as when a fog-shrouded vehicle, or one with only its parking lights on, seems farther away than it is.
What is Light and Shadow?
Illusion where two red bars cast identical-sized images on the retina, but one bar seems bigger.
What is the Ponzo-Illusion?
This allows us to see an X as two continuous lines intersecting, rather than four separate lines meeting at a point.
What is Continuity?
This makes use of disparity by providing each eye with a different image.
What are 3D movies?