Flashcard Set Preview
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| 1 |
Edge & Contour
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Simple cells note thesea sharp change in brightness, lightness or colorboundaries between objects
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Edge Detection
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An image processing task that aims to find edges andcontours in images
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Ganzfeld
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A visual field with no contours or edges
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Brightness
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apparent intensityintensity of light waves
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| 5 |
Lateral Inhibition
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ganglion cells fire lessif the negative area in receptive field is lit it actually inhibits...
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Voluntary eye movement
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Pursuit & saccadesVersion
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Vergence
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the angle between your eyes changeseyes move towards or away from eachother convergence...
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Pursuit
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following a moving object with a steady background--ie:watching a car
moving while the background...
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Bottom up
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seeing the whole picture and breaking it down into parts
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Top down
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see the simple things first to make a conclusion
to a whole
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Voluntary
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IDK MAN
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Version
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the angle of both our eyes stays the sameour eyes move in the same directionie tracing the...
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| 13 |
Saccade Movements
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action of your eyes moving from one focus to another -you can only
see whats on your fovea--only...
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| 14 |
Scotoma
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blind area that is caused by damage to the VC
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| 15 |
Blind Spot
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region of the eye where there is no vision because the stimulus falls on the optic disc
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Completion Processes
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the fill in effectour brain makes up for the part that our eye doesn't see
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Acuity
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fine detailsneller eye chart 20/20
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| 18 |
Lightness Constancy
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our perception of lightness constantly changes so we can percieve objects the same under different...
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| 19 |
Superimposed Spatial Freq.
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sinusodial grating, blurry lines as opposed to stripes
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| 20 |
Contrast Sensitivity
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ability to detect differences in light reflected from 2 edges
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| 21 |
Gestalt Approach
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we percieve objects as wholes, rather than separate isolated parts
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| 22 |
Gestalt Laws
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Proximity (grouping near)Similarity Good Continuation (straight line or smooth curve)Closure...
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| 23 |
Figure/Ground
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figure is the distinct shape with distinct edgesground is whatever is leftover --the backgroundthe...
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| 24 |
Limits to Gestalt
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We observe with subjection
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| 25 |
Illusory Conjunction
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When we mistakenly group objects together because of visual confusion
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| 26 |
Prototypic Theory of Object Perception
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we see shapes more quickly if they're a protoype (a general pattern of a structure) ie: dog,...
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| 27 |
Template Matching
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Lock and key template matching...if it doesn't match our exact template in our memory we search...
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| 28 |
Illusory/Subjective Contours
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We see edges or lines even when theyre not there
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| 29 |
Backward Masking
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The inability to percieve something por que of a second stimulus presents quickly after
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| 30 |
Thatcher Illusion
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when we are use to seeing things one way, when the orientation is changed we have a harder...
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| 31 |
Trident Illusion
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Shape Constancy
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| 32 |
Shape Constancy
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when you change the angle which you view something you still know what shape it is
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color constancy
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when in the dark we still know red is red
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| 34 |
Size Constancy
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when someone walks away from you you still know how big they are
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| 35 |
Why do illusions typcially occur under unsual viewing conditions
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because they take away contextual cuesatypical messes with our visual constanciescauses a misinterpretation
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| 36 |
Monocular
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movement--angle and movement gives us speed and depth (car)pictorial cues (size, shading)accomodationetc
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Accomodation
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curvature of lens to focus
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| 38 |
Interposition
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overlapping objects...allows you to tell what is in front of the other
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| 39 |
Size Cues
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relative size (compared to other things around)Familiar size
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| 40 |
texture gradiants
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textures become denser in the distance
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| 41 |
linear perspective
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parallel lines seem to meet in the distance5th grade art projects
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| 42 |
atmospheric perspective
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distance objects become blurry and bluish in contrast to nearby objects (ie buildings in the...
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| 43 |
Height cues
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objects near the horizon tend to be further away(triangle picture)
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Collary Discharge theory
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when your eyes aren't moving but you see movement then you know the object is movingwhen your...
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