用高分辨率体素地图+GPU加速,实现实时多平面分割,提升足式机器人行走稳定性。
Real-time Multi-Plane Segmentation Based on GPU Accelerated High-Resolution 3D Voxel Mapping for Legged Robot Locomotion
- 结合顶点连通域标记与RANSAC平面检测,利用GPU并行计算快速提取点云中的平面区域。
- 在0.01米分辨率下实现30赫兹以上的实时更新,准确分割复杂3D结构如悬垂面。
- 适用于需要实时感知三维平面结构的足式机器人,尤其在复杂地形中表现稳健。
本文提出一种基于GPU加速的高分辨率3D体素地图的实时多平面分割方法,用于足式机器人行走。现有在线平面映射方法难以兼顾精度与计算效率:直接从特定传感器深度图分割存在时间融合不足问题,基于高度图的方法无法表征如悬垂等复杂3D结构,而体素化平面分割尚未应用于实时场景。为此,我们构建了一种新框架,融合基于顶点的连通域标记、基于随机采样一致性(RANSAC)的平面检测及凸包算法,借助GPU并行计算,从高分辨率3D体素地图累积的点云中快速提取平面区域。实验表明,该方法在0.01米分辨率下仍能保持超过30 Hz的更新速率,实现快速精准的3D多平面分割,支持实时用于运动规划。进一步在仿真环境与物理足式机器人平台上的验证显示,考虑3D平面结构后,系统具备鲁棒的行走性能。
原文摘要 · Abstract (English)
This paper proposes a real-time multi-plane segmentation method based on GPU-accelerated high-resolution 3D voxel mapping for legged robot locomotion. Existing online planar mapping approaches struggle to balance accuracy and computational efficiency: direct depth image segmentation from specific sensors suffers from poor temporal integration, height map-based methods cannot represent complex 3D structures like overhangs, and voxel-based plane segmentation remains unexplored for real-time applications. To address these limitations, we develop a novel framework that integrates vertex-based connected component labeling with random sample consensus based plane detection and convex hull, leveraging GPU parallel computing to rapidly extract planar regions from point clouds accumulated in high-resolution 3D voxel maps. Experimental results demonstrate that the proposed method achieves fast and accurate 3D multi-plane segmentation at over 30 Hz update rate even at a resolution of 0.01 m, enabling the detected planes to be utilized in real time for locomotion tasks. Furthermore, we validate the effectiveness of our approach through experiments in both simulated environments and physical legged robot platforms, confirming robust locomotion performance when considering 3D planar structures.
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