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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 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 multiview feature correspondences in reconstructing 3-D objects, hence easing
those problems caused by occlusions and ambiguities. ??2004 IEEE. |