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Reducing “Structure from Motion”: a general framework for dynamic vision. 1. Modeling

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2 Author(s)
S. Soatto ; Dept. of Electr. Eng., Washington Univ., St. Louis, MO, USA ; P. Perona

The literature on recursive estimation of structure and motion from monocular image sequences comprises a large number of apparently unrelated models and estimation techniques. We propose a framework that allows us to derive and compare all models by following the idea of dynamical system reduction. The “natural” dynamic model, derived from the rigidity constraint and the projection model, is first reduced by explicitly decoupling structure (depth) from motion. Then, implicit decoupling techniques are explored, which consist of imposing that some function of the unknown parameters is held constant. By appropriately choosing such a function, not only can we account for models seen so far in the literature, but we can also derive novel ones

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IEEE Transactions on Pattern Analysis and Machine Intelligence  (Volume:20 ,  Issue: 9 )