论文标题
快速,稳健的迭代次数最接近
Fast and Robust Iterative Closest Point
论文作者
论文摘要
迭代的最接近点(ICP)算法及其变体是两点之间的刚性注册的基本技术,在不同领域,从机器人技术到3D重建的不同领域都有广泛的应用。 ICP的主要缺点是其缓慢的收敛性以及对离群值,缺失数据和部分重叠的敏感性。诸如稀疏ICP之类的最新工作通过以计算速度为代价通过稀疏性优化实现了鲁棒性。在本文中,我们提出了一种新方法,以快速收敛。首先,我们表明经典的点对点ICP可以视为大型化最小化(MM)算法,并提出了Anderson加速方法以加快其融合。此外,我们基于Welsch的函数引入了一个可靠的误差度量,该函数使用Anderson加速度使用MM算法有效地最小化。在具有噪音和部分重叠的具有挑战性的数据集时,我们的精度比稀疏ICP的精度至少更快。最后,我们将强大的公式扩展到平面ICP,并使用类似的Anderson加速MM策略来解决所得问题。我们强大的ICP方法提高了基准数据集上的注册精度,同时在计算时间内具有竞争力。
The Iterative Closest Point (ICP) algorithm and its variants are a fundamental technique for rigid registration between two point sets, with wide applications in different areas from robotics to 3D reconstruction. The main drawbacks for ICP are its slow convergence as well as its sensitivity to outliers, missing data, and partial overlaps. Recent work such as Sparse ICP achieves robustness via sparsity optimization at the cost of computational speed. In this paper, we propose a new method for robust registration with fast convergence. First, we show that the classical point-to-point ICP can be treated as a majorization-minimization (MM) algorithm, and propose an Anderson acceleration approach to speed up its convergence. In addition, we introduce a robust error metric based on the Welsch's function, which is minimized efficiently using the MM algorithm with Anderson acceleration. On challenging datasets with noises and partial overlaps, we achieve similar or better accuracy than Sparse ICP while being at least an order of magnitude faster. Finally, we extend the robust formulation to point-to-plane ICP, and solve the resulting problem using a similar Anderson-accelerated MM strategy. Our robust ICP methods improve the registration accuracy on benchmark datasets while being competitive in computational time.