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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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00146_Field_146.txt
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1996-12-31
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966b
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32 lines
In some situations, our
motion or that of objects does
seem to lead reliably to the
perception of depth. In contrast
to viewing luminous circles
that appear suspended in space,
suppose, for example, that we
see the elements in a plane
change direction as we move. If
we are watching the landscape
pass by from a rapidly moving
car, for instance, we see the
elements of the texture of the
ground, be they stalks of wheat
or pebbles on a beach, change
their direction as a function of
their distance. Our motion
creates a gradient of change in
the direction of objects, with
nearby elements changing
rapidly and distant ones
changing hardly at all. Gibson
called the information we
gather from such moving
perception of elements in a
plane motion perspective,
because it is analogous to
perspective information in
stationary scenes, and he
argued that it is a central factor
in our perception of depth.