Скачать или смотреть [ECCV 2024] GlobalPointer: Large-Scale Plane Adjustmentwith Bi-Convex Relaxation

[ECCV 2024] GlobalPointer: Large-Scale Plane Adjustmentwith Bi-Convex Relaxation

Project Page: https://bangyan101.github.io/GlobalPointer/
Code: https://github.com/WU-CVGL/GlobalPointer
Arxiv: https://arxiv.org/abs/2407.13537

Abstract: Plane adjustment (PA) is crucial for many 3D applications, involving simultaneous pose estimation and plane recovery. Despite recent advancements, it remains a challenging problem in the realm of multi-view point cloud registration. Current state-of-the-art methods can achieve globally optimal convergence only with good initialization. Furthermore, their high time complexity renders them impractical for large-scale problems. To address these challenges, we first exploit a novel optimization strategy termed Bi-Convex Relaxation, which decouples the original problem into two simpler sub-problems, reformulates each sub-problem using a convex relaxation technique, and alternately solves each one until the original problem converges. Building on this strategy, we propose two algorithmic variants for solving the plane adjustment problem, namely GlobalPointer and GlobalPointer++, based on point-to-plane and plane-to-plane errors, respectively. Extensive experiments on both synthetic and real datasets demonstrate that our method can perform large-scale plane adjustment with linear time complexity, larger convergence region, and robustness to poor initialization, while achieving similar accuracy as prior methods.