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arXiv 1808.02414cs.CV
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大规模三维重建中快速精确的摄像机协方差计算

Fast and Accurate Camera Covariance Computation for Large 3D Reconstruction

Czech Technical University in Prague(布拉格捷克理工大学);University of Bonn(波恩大学)

Michal Polic, Wolfgang Förstner, Tomas Pajdla

摘要:

从运动恢复结构运动恢复结构(SfM)中摄像机参数的不确定性是评价重建质量和指导重建过程的重要工具。然而,由于计算的挑战,大型重建的估计参数的质量很少被评估。我们提出了一种新的算法,它采用的不确定性传播的稀疏性和速度的计算约十倍\wrt以前的方法。我们的计算是准确的,没有使用任何近似值。我们可以在一台标准PC上在几十秒内计算数千台摄像机的不确定度。我们还证明了我们的方法可以有效地用于任何大小的重建,通过将其应用到较小的子重建。

英文摘要:

Estimating uncertainty of camera parameters computed in Structure from Motion (SfM) is an important tool for evaluating the quality of the reconstruction and guiding the reconstruction process. Yet, the quality of the estimated parameters of large reconstructions has been rarely evaluated due to the computational challenges. We present a new algorithm which employs the sparsity of the uncertainty propagation and speeds the computation up about ten times \wrt previous approaches. Our computation is accurate and does not use any approximations. We can compute uncertainties of thousands of cameras in tens of seconds on a standard PC. We also demonstrate that our approach can be effectively used for reconstructions of any size by applying it to smaller sub-reconstructions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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