一种面向开放环境的视觉语言引导机器人抓取方法

By using multimodal data processing and spatial topological adjacency matrix construction, the robotic arm is driven to move occluded objects, iteratively update the point cloud state, and generate the target 6D grasping pose. This solves the problem of target objects being occluded in open environments and improves the grasping success rate and safety.

CN122401439APending Publication Date: 2026-07-17HUBEI AUTOMATIZATION RES INST

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUBEI AUTOMATIZATION RES INST
Filing Date
2026-06-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing visual language-guided grasping methods suffer from low success rates and safety in complex open environments due to object occlusion leading to missing target features, lack of topological and force-compliant interaction planning between multiple objects, and lack of state closed-loop updates after obstacle removal.

Method used

By acquiring multimodal data and performing cross-modal feature space alignment, a two-dimensional instance mask and a three-dimensional target point cloud are generated. The command visual grounding confidence is calculated, a spatial topological adjacency matrix is ​​constructed, and the robotic arm is driven to push the occluded object point cloud cluster. The point cloud state is iteratively updated to generate the target 6D grasping pose, and a pre-trained visual language model is used for compliant interactive control.

Benefits of technology

It improves the robot's success rate in grasping complex and disordered scenarios, ensures the safety and accuracy of the grasping process, and prevents damage to the target object and the environment.

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Abstract

本发明涉及机器人控制技术领域,公开了一种面向开放环境的视觉语言引导机器人抓取方法,包括对全局图像与自然语言指令进行跨模态对齐生成二维实例掩码,结合深度图像生成三维初始目标点云并计算指令视觉接地置信度;若置信度小于阈值,提取遮挡物点云簇并构建空间拓扑邻接矩阵,计算初始干涉剥离向量驱动机械臂推移遮挡物;推移后提取当前三维目标点云并与初始点云拼接,生成更新后的三维目标点云,并迭代更新置信度直至满足执行阈值;在置信度满足要求后,基于三维初始或更新后的目标点云生成目标6D抓取位姿并执行抓取。本发明通过主动解耦遮挡与点云状态闭环更新机制,提高了机器人在复杂无序场景下的抓取成功率与可靠性。
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