SeededGrasp: Language-Guided Grasping in Complex Scenes with Multiple Embodiments

AK's Picks Embodied AI and Robotics RP Robot Morphologies Multimodal Intelligence Vision-Language Pre-training Visual Grounding
2026年07月22日
在复杂场景中实现实用的机器人抓取,既需要三维空间推理能力,又需契合特定任务的需求。视觉-语言模型(VLM)为通过自然语言描述这些任务需求提供了一种直观、自然的途径;然而,现有方法要么仅依赖VLM直接预测抓取位姿,但空间感知能力有限,要么将VLM与抓取模型联合训练,而这又显著增加了数据和算力需求。这些局限性制约了模型性能,也阻碍了其向复杂场景中多种机器人本体(multi-embodiment)的规模化扩展。为此,我们提出SeededGrasp——一种新颖且数据高效的新框架,使VLM能够预测一个“种子点”(seed point),作为后续轻量级抓取生成模型的条件输入。该架构将高层语义推理与底层几何执行解耦,既支持多种机器人本体,又避免了昂贵的端到端联合训练。为支撑此类模型的训练,我们发布了首个面向多本体桌面场景的抓取数据集,其中包含超过250万组在杂乱场景中采集的抓取样本。实验结果表明,我们的方法显著优于现有基线,在仿真环境中抓取成功率高达72%,在真实世界抓取实验中更达78%。相关数据与代码请访问项目主页:https://uoft-isl.github.io/seeded-grasp/
Practical robotic grasping in complex scenes requires both 3D spatial reasoning and alignment with task-specific requirements. Vision-language models (VLMs) offer a natural way to specify these requirements using language, but existing approaches either use a VLM to predict the grasp directly with limited spatial awareness, or train the VLM together with the grasping model, which requires significantly more data and compute. These limitations impede performance and have prevented scaling to multiple embodiments in complex scenes. We address this by proposing SeededGrasp, a novel data-efficient framework that enables a VLM to predict a seed point to be used as conditioning for a subsequent lightweight grasp-generation model. Our architecture decouples high-level semantic reasoning from low-level geometric execution, enabling multi-embodiment support while bypassing the need for expensive end-to-end training. To enable training such models, we release the first multi-embodiment tabletop grasping dataset comprising over 2.5M grasps in cluttered scenes. Experimental results demonstrate that our approach outperforms existing baselines, achieving 72% success in simulation and 78% in real-world grasping experiments. See our project site for data and code: https://uoft-isl.github.io/seeded-grasp/
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