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Illusion - Is Seeing Really Believing?
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Illusion - Is Seeing Really Believing (1998)(Marshall Media)[Mac-PC].iso
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00160_Text_res13t.txt
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1997-02-04
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992b
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35 lines
PERSPECTIVE
In Antonio CanalettoΓÇÖs Piazza
St. Marco, linear perspective,
size perspective,
foreshortening, shadow, and
interposition are all cues to the
sceneΓÇÖs depth.
Of all the pictorial cues,
perspectiveΓÇöΓÇôthe
characteristics of the
projection of a scene onto the
retina (or onto a two-
dimensional plane) as a
function of the depth of the
sceneΓÇöΓÇôis best known.
Perspective includes more than
linear perspective, the aspect
of perspective that is perhaps
most familiar. Linear
perspective refers simply to the
fact that parallel lines that
recede into the third
dimension project to the eye as
converging lines. Another
aspect of perspective is size
perspective, which refers to
the fact that objects of equal
size at varying distances project
images whose visual angles are
inversely proportional to their
distance. Gibson was referring
to a special case of size
perspective when he
introduced the term texture-