Fast and precise weak-perspective factorization

Hajder, Levente and Pernek, Ákos and Kazó, Csaba (2007) Fast and precise weak-perspective factorization. In: CAIP 2007. Computer analysis of images and patterns. 12th international conference. Vienna, 2007. (Lecture notes in computer science 4673.).

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We address the problem of moving object reconstruction. Several methods have been published in the past 20 years including stereo reconstruction as well as multi-view factorization methods. In general, reconstruction algorithms estimate the 3D structure of the object and the camera parameters in a non-optimal way and then a nonlinear optimization method refines the estimated camera parameters and 3D object coordinates. In this paper, an adjustment method is proposed which is the fast version of the well-known down-hill alternation method. The novelty which yields the high speed of the algorithm is that the steps of the alternation give optimal solution to the subproblems by closed-form formulas. The proposed algorithm is discussed here and it is compared to the widely used bundle adjustment method.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Structure-from-motion, nonlinear optimization, bundle adjustment
Subjects: Q Science > QA Mathematics and Computer Science > QA75 Electronic computers. Computer science / számítástechnika, számítógéptudomány
Divisions: Geometric Modelling and Computer Vision Laboratory
Depositing User: Eszter Nagy
Date Deposited: 11 Dec 2012 15:29
Last Modified: 11 Dec 2012 15:29

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