HiMo: High-Speed Objects Motion Compensation in Point Clouds

• URL: http://arxiv.org/abs/2503.00803v2
• Date: Sun, 27 Apr 2025 22:43:14 GMT
• Title: HiMo: High-Speed Objects Motion Compensation in Point Clouds
• Authors: Qingwen Zhang, Ajinkya Khoche, Yi Yang, Li Ling, Sina Sharif Mansouri, Olov Andersson, Patric Jensfelt,
• Abstract summary: HiMo is a pipeline that repurposes scene flow estimation for non-ego motion compensation.<n>SeFlow++ is a real-time scene flow estimator that achieves state-of-the-art performance on both scene flow and motion compensation.<n>Our findings show that HiMo improves the geometric consistency and visual fidelity of dynamic objects in LiDAR point clouds.
• Score: 18.617901304679812
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: LiDAR point cloud is essential for autonomous vehicles, but motion distortions from dynamic objects degrade the data quality. While previous work has considered distortions caused by ego motion, distortions caused by other moving objects remain largely overlooked, leading to errors in object shape and position. This distortion is particularly pronounced in high-speed environments such as highways and in multi-LiDAR configurations, a common setup for heavy vehicles. To address this challenge, we introduce HiMo, a pipeline that repurposes scene flow estimation for non-ego motion compensation, correcting the representation of dynamic objects in point clouds. During the development of HiMo, we observed that existing self-supervised scene flow estimators often produce degenerate or inconsistent estimates under high-speed distortion. We further propose SeFlow++, a real-time scene flow estimator that achieves state-of-the-art performance on both scene flow and motion compensation. Since well-established motion distortion metrics are absent in the literature, we introduce two evaluation metrics: compensation accuracy at a point level and shape similarity of objects. We validate HiMo through extensive experiments on Argoverse 2, ZOD, and a newly collected real-world dataset featuring highway driving and multi-LiDAR-equipped heavy vehicles. Our findings show that HiMo improves the geometric consistency and visual fidelity of dynamic objects in LiDAR point clouds, benefiting downstream tasks such as semantic segmentation and 3D detection. See https://kin-zhang.github.io/HiMo for more details.

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