Dexterous robotic hands are appealing for their agility and human-like morphology, yet their high degree of freedom makes learning to manipulate challenging. We introduce an approach for learning dexterous grasping. Our key idea is to embed an object-centric visual affordance model within a deep reinforcement learning loop to learn grasping policies that favor the same object regions favored by people. Unlike traditional approaches that learn from human demonstration trajectories (e.g., hand joint sequences captured with a glove), the proposed prior is object-centric and image-based, allowing the agent to anticipate useful affordance regions for objects unseen during policy learning. We demonstrate our idea with a 30-DoF five-fingered robotic hand simulator on 40 objects from two datasets, where it successfully and efficiently learns policies for stable grasps. Our affordance-guided policies are significantly more effective, generalize better to novel objects, and train 3 X faster than the baselines. Our work offers a step towards manipulation agents that learn by watching how people use objects, without requiring state and action information about the human body. Project website: http://vision.cs.utexas.edu/projects/graff-dexterous-affordance-grasp

本研究介绍了一种在深度强化学习循环中嵌入面向对象视觉助力模型的方法，以学习优先选择与人类喜欢的对象区域相同的抓握策略，实现对物体的灵活抓握能力。通过40个物体的实验，表明该方法可以显著提高抓握策略效能，泛化能力较强，比普通基线方法的训练速度更快，且更能适应噪声传感器。

利用物体中心的视觉可承受能力学习巧妙抓握