Pose Determination of a Robot Manipulator Based on Monocular Vision

This paper presents an approach to determine the pose of a robot manipulator by using a single fixed camera. Conventionally, the pose determination is usually achieved by using the encoders to sense the joint angles, and then the pose of the end effector is obtained by using the direct kinematics of...

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Main Authors: Yong-Lin Kuo, Bo-Han Liu, Chun-Yu Wu
Format: Article
Language:English
Published: IEEE 2016-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/7762072/
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author Yong-Lin Kuo
Bo-Han Liu
Chun-Yu Wu
author_facet Yong-Lin Kuo
Bo-Han Liu
Chun-Yu Wu
author_sort Yong-Lin Kuo
collection DOAJ
description This paper presents an approach to determine the pose of a robot manipulator by using a single fixed camera. Conventionally, the pose determination is usually achieved by using the encoders to sense the joint angles, and then the pose of the end effector is obtained by using the direct kinematics of the manipulator. However, when the encoders or the manipulators are malfunctioning, the pose may not be accurately determined. This paper presents an approach based on machine vision, where a single camera is fixed away from the base of the manipulator. Besides, based on the kinematics of the manipulator and a calibrated camera, the pose of the manipulator can be determined. Furthermore, a graphical user interface is developed, which is convenient for users to operate the entire system. Two examples are demonstrated, and the estimated results are compared with those from the encoders. The proposed approach does not compete with the encoders. Instead, the approach can be treated as a backup method, which can provide a reference solution.
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spelling doaj.art-918d880bab754e489eef78a62fb8c2af2022-12-21T18:14:18ZengIEEEIEEE Access2169-35362016-01-0148454846410.1109/ACCESS.2016.26333787762072Pose Determination of a Robot Manipulator Based on Monocular VisionYong-Lin Kuo0https://orcid.org/0000-0003-3582-6067Bo-Han Liu1Chun-Yu Wu2Graduate Institute of Automation and Control, National Taiwan University of Science and Technology, Taipei, TaiwanGraduate Institute of Automation and Control, National Taiwan University of Science and Technology, Taipei, TaiwanGraduate Institute of Automation and Control, National Taiwan University of Science and Technology, Taipei, TaiwanThis paper presents an approach to determine the pose of a robot manipulator by using a single fixed camera. Conventionally, the pose determination is usually achieved by using the encoders to sense the joint angles, and then the pose of the end effector is obtained by using the direct kinematics of the manipulator. However, when the encoders or the manipulators are malfunctioning, the pose may not be accurately determined. This paper presents an approach based on machine vision, where a single camera is fixed away from the base of the manipulator. Besides, based on the kinematics of the manipulator and a calibrated camera, the pose of the manipulator can be determined. Furthermore, a graphical user interface is developed, which is convenient for users to operate the entire system. Two examples are demonstrated, and the estimated results are compared with those from the encoders. The proposed approach does not compete with the encoders. Instead, the approach can be treated as a backup method, which can provide a reference solution.https://ieeexplore.ieee.org/document/7762072/Pose determinationrobot manipulatormonocular vision
spellingShingle Yong-Lin Kuo
Bo-Han Liu
Chun-Yu Wu
Pose Determination of a Robot Manipulator Based on Monocular Vision
IEEE Access
Pose determination
robot manipulator
monocular vision
title Pose Determination of a Robot Manipulator Based on Monocular Vision
title_full Pose Determination of a Robot Manipulator Based on Monocular Vision
title_fullStr Pose Determination of a Robot Manipulator Based on Monocular Vision
title_full_unstemmed Pose Determination of a Robot Manipulator Based on Monocular Vision
title_short Pose Determination of a Robot Manipulator Based on Monocular Vision
title_sort pose determination of a robot manipulator based on monocular vision
topic Pose determination
robot manipulator
monocular vision
url https://ieeexplore.ieee.org/document/7762072/
work_keys_str_mv AT yonglinkuo posedeterminationofarobotmanipulatorbasedonmonocularvision
AT bohanliu posedeterminationofarobotmanipulatorbasedonmonocularvision
AT chunyuwu posedeterminationofarobotmanipulatorbasedonmonocularvision