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DexGraspVLA: A Vision-Language-Action Framework Towards General Dexterous Grasping
Created by
Haebom
Author
Yifan Zhong, Xuchuan Huang, Ruochong Li, Ceyao Zhang, Zhang Chen, Tianrui Guan, Fanlian Zeng, Ka Num Lui, Yuyao Ye, Yitao Liang, Yaodong Yang, Yuanpei Chen
Outline
DexGraspVLA is a hierarchical framework for language-guided general dexterous grasping and beyond. It uses a pretrained vision-language model as a high-level planner and learns a diffusion-based low-level action controller. The key insight for achieving generalization lies in iteratively transforming diverse language and visual inputs into domain-invariant representations through the underlying model, where domain shift mitigation effectively applies imitation learning. This method achieves dexterous grasping success rates exceeding 90% in thousands of challenging, unknown, and cluttered scenes. Empirical analysis validates the design by verifying the consistency of internal model behavior across environmental changes. Furthermore, DexGraspVLA is the first to simultaneously demonstrate free-form, long-term prompt execution, robustness to adversarial objects and human interference, and failure recovery. Extended applications to non-grasping grasping further demonstrate its generality.
Takeaways, Limitations
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Takeaways:
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Combining a pre-trained visual-language model with a diffusion-based action controller to achieve high-success rate dexterous grasping in diverse environments.
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Improving the efficiency of imitation learning and improving generalization performance using domain-invariant representations.
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Implementing free-form long-term prompt execution, robustness against adversarial objects and human interference, and failure recovery capabilities simultaneously.
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We present a general framework that can be extended to non-phage phage.
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Limitations:
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The paper does not specifically mention Limitations. Future research may require a more rigorous evaluation of the algorithm's robustness and generalization ability.
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Lack of details on application and performance evaluation for actual robotic systems.
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Lack of analysis of computational costs and real-time performance.