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by Zhengyou Zhang
IEEE Transactions on Pattern Analysis and Machine Intelligence
http://www.research.microsoft.com/vision/VisionBasedModeling/Publications/zhang95-itpami.ps.gz
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Abstract:
We describe an analytical method for recovering 3D motion and structure of four or more points from one motion of a stereo rig. The extrinsic parameters are unknown. The motion of the stereo rig is also unknown. Because of the exploitation of information redundancy, the approach gains over the traditional "motion and structure from motion " approach in that less features and less motions are required, and thus more robust estimation of motion and structure can be obtained. Since the constraint on the rotation matrix is not fully exploited in the analytical method, nonlinear minimization can be used to improve the result. Both computer simulated data and real data are used to validate the proposed algorithm, and very promising results are obtained.
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