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follows the photometric definition of luminance, but with the values normalized to 1 or 100 for a reference white.

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the lines are the same size

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even if a door cast as trapezoid when open we perceive it as rectangular

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the tracks in the background looks bigger but isnt

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as we move objects that are actually stable my appear to move

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percive objects higher in our vision as further away

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A gradual change from course to fine creates a idea that more densely packed objects seem further away

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when somethings is hazy and unclear we assume its further away than something that is sharp and clear

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if one object blocks our veiw of another was assume its closer

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assumption that two objects are simalr in size we percive that one is smaller if further away

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depth cues such as interposition and linear perspective available to either eye alone

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a binocular cue for perceiving depth the extent to which the eyes converge inward

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depth cues such as retinal disparity and convergence that depend on the use of two eyes

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a laboratory device for testing depth in infants and young animals

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the ability to see objects in three d dementions although the images that strike the retenia are 2d they allow us to see distance

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we fill in gaps to create a complete image

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we perceive smooth continues patterns rather than discontinuous ones

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we group figures that are close to eatch other together

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we group nearby figures together we see not six separate lines but two sets of three lines

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the perceptual tendency to organised stimuli into coherent groups

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the organization of the visual field into the objects (the figures) thats stand out from their surroundings (the ground)

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and organized whole . Gestalt psychologist emphasized our tendency to intergrate pieces or information into meaningful wholes

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the tendency for vision to dominate the other senses