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apparent motion

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Noun1.apparent motion - an optical illusion of motion produced by viewing a rapid succession of still pictures of a moving objectapparent motion - an optical illusion of motion produced by viewing a rapid succession of still pictures of a moving object; "the cinema relies on apparent motion"; "the succession of flashing lights gave an illusion of movement"
optical illusion - an optical phenomenon that results in a false or deceptive visual impression


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This lack of apparent motion makes them ideal celestial landmarks for anchoring a grid system, similar to earthly latitude and longitude, used to mark the positions of celestial objects.
OPTICAL FLOW BASED IMAGE ANALYSIS METHOD Optical flow (Horn and Schunck, 1981) is an estimation of the apparent motion (velocity) of objects within an image sequence.
Sun and Moon The Sun's daily apparent motion of roughly a degree eastwards along the ecliptic (really a consequence of Earth's orbital motion, of course) carries it to increasing northerly declinations on the celestial sphere during this interval.
 
 
 
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