4.7 Article

A Vision-Based Robot Grasping System

期刊

IEEE SENSORS JOURNAL
卷 22, 期 10, 页码 9610-9620

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2022.3163730

关键词

Feature extraction; Grasping; Robots; Robot sensing systems; Sensors; Detectors; Grippers; Robot sensing system; visual sensing; neural networks; vision-based perception; real-time system; grasp pose estimation

资金

  1. National Key Research and Development Program of China [2019YFB1312400]
  2. Hong Kong Research Grants Council (RGC) Collaborative Research Fund (CRF) [C4063-18G]
  3. Hong Kong RGC General Research Fund (GRF) [14211420]

向作者/读者索取更多资源

This paper presents a vision-based grasping platform that uses a deep grasp detector to accurately predict grasp poses for various objects. Real-world experiments demonstrate the effectiveness of the system in robust and accurate grasping.
Grasping is critical for intelligent robots to accomplish sophisticated tasks. Even with multimodal sensor fusion, accurately and reliably estimating grasp poses for complex-shaped objects remains a challenge. In this paper, we design a vision-based grasping platform for a more general case, that is, grasping a variety of objects by a simple parallel gripper with the grasp detection model consuming RGB sensing or depth sensing. Focusing on the grasp pose estimation part, we propose a deep grasp detector that uses a densely connected Feature Pyramid Network (FPN) feature extractor and multiple two-stage detection units to achieve dense grasp pose predictions. Specifically, for the feature extractor, the fusion of different layer feature maps can increase both the model's capacity to detect the various size grasp areas and the accuracy of the regressed grasp positions. For each of the two-stage detection unit, the first stage generates horizontal candidate grasp areas, while the second stage refines them to predict the rotated grasp poses. We train and validate our grasp pose estimation algorithm on the Cornell Grasp Dataset and the Jacquard Dataset. The model achieves the detection accuracy of 93.3% and 89.6%, respectively. We further design real-world grasp experiments to verify the effectiveness of our vision-based robotic grasping system. The real scenario trials validate that the system is capable of grasping unseen objects, in particular, achieving robust and accurate grasp pose detection and gripper opening width measurement based on depth sensing only.

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