Monocular Vision-Based Decoupling Measurement Method for Multi-Degree-of-Freedom Motion

被引：0
作者：
Wu, Qingsong [1 ]
Yang, Ming [1 ]
Liu, Zhihua [2 ]
Cai, Chenguang [2 ]
Wang, Ying [3 ,4 ,5 ]
Wang, Deguang [1 ]
机构：
[1] Guizhou Univ, Dept Automat, Elect Engn Coll, Guiyang 550025, Peoples R China
[2] Natl Inst Metrol, Inst Mech & Acoust Metrol, Beijing 100029, Peoples R China
[3] Beijing Univ Chem Technol, Beijing 100029, Peoples R China
[4] Chinese Acad Sci, Inst Microelect, Beijing 100029, Peoples R China
[5] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2024年 / 24卷 / 21期
基金：
中国国家自然科学基金;
关键词：
Decoupling measurement; laser interferometry; monocular vision (MV); multi-degree-of-freedom (MDOF) motion; subpixel accuracy; VIBRATION CALIBRATION;
D O I：
10.1109/JSEN.2024.3457627
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The most common forms of target multi-degree-of-freedom (MDOF) motion include plane and space motions, whose accurate measurement is crucial for the fields of pose estimation, inertial navigation, and structural health monitoring of buildings. Currently, the primary methods used for the MDOF motion measurement are laser interferometry, grating ruler-based method, and sensor-based method. However, the laser interferometry is operationally complex and costly, and it requires strict environmental conditions. Although the grating ruler-based method is low cost and accurate, its applicable frequency range is limited. Moreover, the sensor-based method suffers from limited accuracy and dynamic range. To achieve accurate measurement of MDOF motion across a wide frequency range, a new monocular vision (MV)-based decoupling measurement method is investigated. This method utilizes a specially designed measurement mark, combined with an improved Harris corner positioning algorithm with subpixel accuracy and decoupling models for plane and space motions, which has the advantages of high measurement accuracy, simple algorithm, and strong robustness. Comparison experiments with the current methods demonstrated that the investigated method can simultaneously accomplish the decoupling measurements of plane and space motions, which achieved the accuracy of 0.66% and 1.29% in the range of 0.1-2 Hz.
引用
收藏
页码：35092 / 35100
页数：9
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