1/28/2004 slide 6
Principle
1: Images Are Ambiguous
“You construct visual worlds from ambiguous images in conformance to visual rules.” [Hoffman 1998 p.24]
“You construct visual worlds from ambiguous images in conformance to visual rules.” [Hoffman 1998 p.24]
1.Image at eye has countless number of possible interpretations. [Hoffman
1998] p13.
2. Even though we have stereo vision, the image at each eye is 2D and has countless interpretations in three dimensions
1
2
1
2
With two gray dots (colors only for illustration), retinal images can be matched in two ways:
•Correct: spots matched
with their respective projections
•Incorrect: projection
of spot 1 in one eye matched
with projection of spot 2 in other eye (will create ghost spots)
[Pinker 1999] , How the Mind
Works, p.228
correct
incorrect