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Uncertainty Models in Quasiconvex Optimization for Geometric Reconstruction
New York, NY June 17-June 22
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/CVPR.2006.3192006 IEEE Computer Society Conference ...
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Qifa Ke, Carnegie Mellon University, PA
Takeo Kanade, Carnegie Mellon University, PA
Geometric reconstruction problems in computer vision can be solved by minimizing the maximum of reprojection errors, i.e., the L\infty-norm. Unlike L2-norm (sum of squared reprojection errors), the global minimum of L\infty-norm can be efficiently achieved by quasiconvex optimization. However, the maximum of reprojection errors is the meaningful measure to minimize only when the measurement noises are independent and identically distributed at every 2D feature point and in both directions in the image. This is rarely the case in real data, where the positional noise not only varies at different features, but also has strong directionality. In this paper, we incorporate the directional uncertainty model into a quasiconvex optimization framework, in which global minimum of meaningful errors can be efficiently achieved, and accurate geometric reconstructions can be obtained from feature points that contain high directional uncertainty.
Citation:
Qifa Ke, Takeo Kanade, "Uncertainty Models in Quasiconvex Optimization for Geometric Reconstruction," cvpr, vol. 1, pp.1199-1205, 2006 IEEE Computer Society Conference on Computer Vision and Pattern Recognition - Volume 1 (CVPR'06), 2006
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