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Issue No. 08 - August (1994 vol. 16)
ISSN: 0162-8828
pp: 802-808
<p>This correspondence discusses computing the pose of a model from three matching point pairs under weak-perspective projection. A new approach to the problem that is motivated geometrically is described. Like previous methods, the method here involves solving a biquadratic equation, but here the biquadratic's solutions, comprised of an actual and a false solution, are interpreted graphically. The final equations take a new form, which leads to a simple expression for the image position of any unmatched model point.</p>
image recognition; image sequences; geometry; 3-D pose; weak-perspective; matching point pairs; biquadratic equation; image position; unmatched model point

T. Alter, "3-D Pose from 3 Points Using Weak-Perspective," in IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 16, no. , pp. 802-808, 1994.
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