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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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ILLUSION
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SROCK_TX.CXT
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00227_Text_ref19t.txt
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1996-12-31
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900b
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29 lines
Left out in this description of
figure-ground is any mention of
borders, the assignment of
which is central to shape
perception. At any given time,
we assign the common border
between regions to one region
or the other, with the
consequence that the region to
which the border is assigned
takes on a particular perceptual
shape. When the assignment is
reversed, the shape perceived
is dramatically different. For
example, in the familiar faces-
or-vase pattern, we assign the
borders to either the two
profiles or to the sides of the
vase. A border, that is, cannot
belong to both a profile and the
vase at the same time. When
the border is assigned to the
faces rather than the vase, the
figureΓÇÖs entire appearance is
quite different: what appeared
concave in the borders of the
profiles become convex in the
edge of the vase, and so on.