Ambiguities of a Motion Field.
MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB
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Conditions are studied under which a perspective motion field can have multiple interpretations and present analytical expressions for the relationship among these interpretations. Furthermore, in most cases, the ambiguity in the interpretation of a motion field can be resolved by imposing the physical constraint that depth is positive over the image region onto which the surface projects. Keyword Motion field Optical flow Quadratic surfaces asymptotic lines.