Ch 10: Perceiving Depth and Size Flashcards
monocular depth
provides information from just one eye about the distance from an object
monocular depth cues
-familiar size
-relative size
-relative height
-motion parallax
-linear perspective and vanishing points
binocular depth cues
-involve comparison of all the info that arrives at the two eyes
-retinal disparity
-visual field allows for binocular vision
oculomotor depth cues
-based on our ability to sense the position of our eyes and the tension in our eye muscles
-accommodation
-convergence
-occlusion
-relative size
-perspective convergence
atmospheric perspective
details in foreground are sharp and defined but become less sharp as we look out into the distance
texture gradient
several objects placed equally spaced in a scene they produce a perception of texture
-farter objects appearing closer together also impact depth
shadows
-decreases in light intensity can enhance the three-dimensionality of objects
echolocation
bats emitting sounds to determine distance of objects in the dark by listening for echos
Strabismus
-misalignment of the eyes
-visual system suppresses vision in one eye to avoid double vision
-potentially limited to monocular depth cues
size consistency
objects that are known to be further away are scaled for size despite smaller retinal image
Ponzo illusions
-converging lines add dimensions of depth
-can make identical objects appear different sizes
Hering illusions
two straight parallel lines present on front of a radial background the lines appear as if they are bowed outwards
Muller-lyer illusion
straight lines with inward fins appear shorter than those with outward fins
Ames illusions
distorted room that creates an optical illusion
Ebbinghaus illusion
-Titchener circles
-illusion of relative size perception
-many circles placed around each other
