Chapter 3: Perception

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Chapter 3: Perception definitions

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Chapter 3: Perception
1 Perceptual Constancy: brain illusions
1.1 Shape Constancy-adjust for changes in image shape
1.2 Brightness Constancy-adjust for changes in color/brightness
1.3 Size Constancy-depth perception
2 Gestalt Principals-the brain forces patterns onto visual stimulus
2.1 Figure-ground illusion: brain focuses on figure and ignores the ground
2.2 Proximity-objects closer together perceived as part of group
2.3 Similarity-objects that look similar belong together
2.4 Closure-tendency to see incomplete figures as complete
2.5 Continuity-mind looks for simplest pattern that is continuous
2.6 Contiguity-perceive things that occur close in time as being related
2.7 Common region-perceive objects that are in a common area as being part of a group
3 Depth Perception-ability to see the world in 3-D
3.1 Monocular Cues-perceived by one eye alone
3.1.1 Interposition-something is between the viewer and the background
3.1.2 Linear Perspective
3.1.3 Relative Size-smaller=farther away
3.1.4 Texture Gradient-detail up close
3.1.5 Aerial Perspective-know position in relation to image
3.1.6 Motion Parallax- when a person is moving, objects at different distances seem to be moving at different speeds
3.2 Binocular Cues-perceived by both eyes
3.2.1 Convergence-eyes get closer together as the object gets closer
3.2.2 Binocular Diversity-images in each eye are more similar the farther away an object is
4 Stroboscopic Effect-a rapid series of still pictures appear as movement
5 Autokinetic Effect-small light in a dark room appears to be moving because there are no other cues to indicate that its not
6 Phi-lights illuminated in a series appear to move
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