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• W3110852010 abstract "This paper presents an efficient algorithm for the least-squares problem using the point-to-plane cost, which aims to jointly optimize depth sensor poses and plane parameters for 3D reconstruction. We call this least-squares problem Planar Bundle Adjustment (PBA), due to the similarity between this problem and the original Bundle Adjustment (BA) in visual reconstruction. As planes ubiquitously exist in the man-made environment, they are generally used as landmarks in SLAM algorithms for various depth sensors. PBA is important to reduce drift and improve the quality of the map. However, directly adopting the well-established BA framework in visual reconstruction will result in a very inefficient solution for PBA. This is because a 3D point only has one observation at a camera pose. In contrast, a depth sensor can record hundreds of points in a plane at a time, which results in a very large nonlinear least-squares problem even for a small-scale space. The main contribution of this paper is an efficient solution for the PBA problem using the point-to-plane cost. We introduce a reduced Jacobian matrix and a reduced residual vector, and prove that they can replace the original Jacobian matrix and residual vector in the generally adopted Levenberg-Marquardt (LM) algorithm. This significantly reduces the computational cost. Besides, when planes are combined with other features for 3D reconstruction, the reduced Jacobian matrix and residual vector can also replace the corresponding parts derived from planes. Our experimental results show that our algorithm can significantly reduce the computational time compared to the solution using the traditional BA framework. In addition, our algorithm is faster, more accurate, and more robust to initialization errors compared to the start-of-the-art solution using the plane-to-plane cost [3]." @default.
• W3110852010 created "2020-12-21" @default.
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• W3110852010 date "2020-11-01" @default.
• W3110852010 modified "2023-09-30" @default.
• W3110852010 title "An Efficient Planar Bundle Adjustment Algorithm" @default.
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• W3110852010 doi "https://doi.org/10.1109/ismar50242.2020.00035" @default.
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