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arXiv 1303.2607cs.CV
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多视图重建中拟合与匹配的联合优化

Joint optimization of fitting & matching in multi-view reconstruction

Western University(韦仕敦大学)

Hossam Isack, Yuri Boykov

摘要:

几何模型拟合的许多标准方法是基于预匹配的图像特征。通常,这种预匹配仅使用特征外观(例如SIFT),并且必须丢弃大量非唯一特征以控制误报率。相比之下,我们在联合优化框架中解决特征匹配和多模型拟合问题。本文提出了几个适合与匹配的能量公式的基础上推广的分配问题。我们开发了一个有效的求解器的基础上,最小成本最大流算法,找到接近最优的解决方案。我们的方法显著增加了检测到的匹配的数量。在实践中,基于能量的联合拟合和匹配允许增加先前由局部SIFT匹配的鲁棒性限制的视点之间的距离,并且当与最先进的多模型拟合技术相比时,提高模型拟合精度。

英文摘要:

Many standard approaches for geometric model fitting are based on pre-matched image features. Typically, such pre-matching uses only feature appearances (e.g. SIFT) and a large number of non-unique features must be discarded in order to control the false positive rate. In contrast, we solve feature matching and multi-model fitting problems in a joint optimization framework. This paper proposes several fit-&-match energy formulations based on a generalization of the assignment problem. We developed an efficient solver based on min-cost-max-flow algorithm that finds near optimal solutions. Our approach significantly increases the number of detected matches. In practice, energy-based joint fitting & matching allows to increase the distance between view-points previously restricted by robustness of local SIFT-matching and to improve the model fitting accuracy when compared to state-of-the-art multi-model fitting techniques.

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