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Abstract:
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Solving the correspondence problem is the most essential task for multiview reconstruction
techniques, yet finding unique correspondences between multiple views is impossible at some points, due to
such problems as occlusions and ambiguities. We have developed a closed-form solution through
constructive geometry for a special case of the structure-from-motion (SfM) problem with four rigidly
moving points. This solution allows the 3-D position of a point on a moving object to be computed without
having to find the correspondence between its projections on the image planes of multiple views, given its
projected 2-D motion vector on an image plane and 3-D information of three other points. With this method
we do not have to depend entirely on stereo/multiview feature correspondences in reconstructing 3-D
objects, hence easing those problems caused by occlusions and ambiguities. ?? 2004 IEEE. |