Term
depth cues
(3 main groups) |
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Definition
1. oculomotor
2.monocular
3. binocular |
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Term
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Definition
| depth cue that depends on our ability to sense position of eye and sense tension in eye muscles |
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Term
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Definition
1.accommodation
2. convergence |
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Term
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Definition
- muscles tighten
- sharp image on retina
- sends info to brain
- brain interprets as brain gets closer
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Term
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Definition
- inward movement of eyes
- close object-eyes pointed inward
- far object- eyes straight ahead
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Term
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Definition
| depth cues involve one eye |
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Term
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Definition
- occlusion
- relative height
- relative size
- perspective convergence
- familiar size
- atmospheric perspective
- texture gradient
- motion parallax
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Term
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Definition
- occurs when object blocks another object
- blocked object= furthur away
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Term
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Definition
| bases of objects that are higher in visual field are more distant |
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Definition
| if 2 objects are equal size, the more distant object looks smaller |
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Definition
| if objects are different sizes, but appear same size, you know smaller object is closer |
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Term
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Definition
| when parallel lines extended out, lines appear to converge |
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Term
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Definition
| distant objects appear less detailed, it is because of atmospheric particles |
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Definition
| distant objects appear smaller, packed together |
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Definition
| when objects move across field of vision, closer objects move faster and distant objects move slower |
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Term
| relative distance of close objects |
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Definition
accommodation
convergence
motion parallax
occlusion |
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Term
| relative distance of far objects |
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Definition
atmospheric perspective
motion parallax
occlusion |
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Term
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Definition
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Term
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Definition
difference in images in both eyes
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Term
when left eye is open
binocular disparity |
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Definition
| both objects fall on same point of retina |
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Term
when right eye is open
binocular disparity |
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Definition
| both objects fall on different points of retina |
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Term
| corresponding retinal points |
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Definition
| corresponding points A,B,F |
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Term
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Definition
| imaginary circle that travels through fixation point and indicates location of objects that fall on corresponding retinal points |
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Term
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Definition
| images not on horopter, C,X,L,Y are points |
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Term
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Definition
| angle between corresponding point and actual point; C'= corresponding point, X = actual point |
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Term
| Object is farther than horopter |
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Definition
| greater angle of disparity |
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Term
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Definition
| objects located insdie horopter, images move to side or retina, close objects |
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Definition
| objects located outside of horopter, objects to move to center of retina, distant objects |
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Term
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Definition
| perception of depth that results from binocular disparity |
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Term
| binocular disparity is used with |
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Definition
| 3-D movies, each filters out 1 image |
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Definition
| depends on how far you actually think you are from ground, ex. pilot believes ground is farther away than it is, think small box could be large truck |
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Definition
| angle of object relative to observer's eye; depends on size/distance of object |
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Term
| closer object = (visual angle) |
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Definition
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Term
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Definition
| perception of bject's size remains constant if size of proximal stimulus changes |
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Term
| Example of perceptual constancy |
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Definition
| lightness constancy- paper still looks white with light off |
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Term
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Definition
| perceived size of object depends on: size of proximal stimulus, perceived distance of object |
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Term
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Definition
S= perceived size
K= constant
R=size of retinal image (proximal stimulus)
D= perceived distance |
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Term
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Definition
| if person walking away, R gets smaller, at the same time D gets largers, while S remains constant |
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Definition
| perception that matches actual distal stimulus |
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Term
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Definition
| perception of object is different from distal stimulus |
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Term
| Ezample of nonverdical perception |
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Definition
| see spots that aren't really there |
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Definition
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Term
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Definition
| perception of length determined by length of line and overall length of figure and integrate 2 cues to form compromised perception of length |
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Term
| Misapplied Size Constancy Scaling |
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Definition
| brain misapplies size constancy, S=R*D, R=remains contant, lines are same length, D= increases, inside vs. outside corner and if D increases then S increses |
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