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CH. 3 | Visual Perception (Depth Perception (B. Monocular Cues (Monocular…
CH. 3 | Visual Perception
Visual System
Photoreceptors
light :arrow_right:cornea :arrow_right:lens :arrow_right:retina
Rods
- sensitive to low levels of light
Cones
- less sensitive to light; sensitive to color differences
stimulate
bipolar cells
:arrow_right:excite
ganglion cells
optic nerve
- carries info to various sites in the brain
lateral geniculate nucleus (LGN)
lateral inhibition
- Cells linking the retina and brain are already
performing computations
akinetopsia
- unable to perceive motions
single cell recording
parallel processing
Parvocellular cells
Magnocellular cells
serial processing
Form Perception
simple visual features
:arrow_down:
object recognition
:arrow_down:
knowledge
gestalt principles
Constancy
perceptual constancy
size constancy
shape constancy
brightness constancy
Unconscious inference
Hermann von Helmholtz noted that as object
size doubles, image size decreases by half.
Depth Perception
B. Monocular Cues
Monocular distance cues
Pictorial cues
Interposition
Linear perspective
C. The Perception of Depth through Motion
Motion parallax
Optic flow
A. Binocular Cues
Distance cues
Binocular disparity
D. The Role of Redundancy
