arXiv:2607.29567cs.RO2026-07

让机器人稳定抓取透明器皿,避免液体洒出。

TransGraspNet: Physically and Geometrically Consistent Manipulation of Transparent Labware

论文配图:TransGraspNet: Physically and Geometrically Consistent Manipulation of Transparent Labware
图 1 · 摘自论文原文
  • 三重一致性设计:边界、表面、物理特性全程联动优化
  • 实测高速运输时零溢出,杂乱场景抓取成功率高
  • 适合实验室自动化、精密操作等安全要求高的场景

抓取含液透明实验器皿具有高度安全隐患:微小几何误差即可能导致抓持不稳和危险溢出。尽管透明物体感知与机器人抓取已有进展,但现有系统独立优化检测、深度重建与抓取规划,导致跨阶段不一致——边界不准确引发深度泄漏,表面畸变影响法向估计,任务无关的抓取评分造成倾斜或偏心抓取,在动态运动中易失败。本文提出TransGraspNet,一种从感知到执行全程一致的框架,通过三个耦合原则实现:边界一致性生成结构可靠的物体轮廓作为下游先验;表面一致性保障深度重建中的几何保真度与法向精度;物理一致性通过质心对齐与力矩空间稳定性优化抓取选择,实现竖直且动态鲁棒的操控。我们在公开基准、专用透明器皿数据集及真实机器人平台进行评估。结果表明,边界质量与表面法向保真度显著提升,在杂乱透明场景中展现出强任务级性能。最重要的是,该系统实现了可靠的真实世界运行,包括在杂乱环境中高抓取成功率,以及高速液体运输过程零溢出,验证了方法的有效性。

原文摘要 · Abstract (English)

Manipulating transparent laboratory glassware that contains liquid is inherently safety-critical: even small geometric errors can cause unstable grasps and hazardous spillage. Although recent progress has been made in transparent object perception and robotic grasping, most existing systems optimize detection, depth reconstruction, and grasp planning independently, which leads to cross-stage inconsistency imperfect boundaries induce depth bleeding, distorted surfaces corrupt normal estimation, and task agnostic grasp scoring yields tilted or off-center grasps that fail under dynamic motion. In this paper, we propose TransGraspNet, a geometry physics consistent framework that explicitly enforces consistency from perception to execution through three coupled principles: boundary consistency to produce structurally reliable object contours as downstream priors, surface consistency to preserve geometric fidelity and surface normal accuracy during depth reconstruction, and physics consistency to refine grasp selection with centroid alignment and wrench-space stability for upright and dynamically robust manipulation. We evaluate TransGraspNet on public benchmarks, a dedicated transparent glassware dataset, and a real robotic platform. The results show improved boundary quality and surface normal fidelity, and demonstrate strong task-level performance in cluttered transparent scenes. Most importantly, the proposed system achieves reliable real-world operation, including high grasp success rates in clutter and zero spillage during high speed liquid transport, highlighting the effectiveness of our method.

机器人抓取透明物体物理一致性实验室自动化

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