High-speed vision measurement of vibration based on an improved ZNSSD template matching algorithm

IF 3.2 Q2 AUTOMATION & CONTROL SYSTEMS Systems Science & Control Engineering Pub Date : 2022-01-12 DOI:10.1080/21642583.2021.2024099
Jian Luo, Bingyou Liu, Pan Yang, Xuan Fan
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引用次数: 2

Abstract

This paper proposes an improved zero-mean normalization sum of squared differences (ZNSSD) algorithm to solve the problem of the inability of traditional structural measurement to extract high-frequency vibration signals. In the proposed technique, the high-speed image sequence of target vibration is captured by a high-speed camera. Then, the ZNSSD template matching algorithm with subpixel accuracy is introduced to process the captured images in the computer. Additionally, a modified search algorithm, the ZNSSD template matching algorithm based on image pyramid (ZNSSD-P), is proposed to significantly reduce the computation time and increase efficiency. Then, a jumping ZNSSD template matching algorithm based on image pyramid (J-ZNSSD-P) is proposed to further improve the efficiency of the ZNSSD-P algorithm. Vibration signals were extracted with Grating Ruler Motion Platform and sound barriers. Results show that the vibration signal extraction method has high precision and efficiency.
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基于改进ZNSSD模板匹配算法的振动高速视觉测量
针对传统结构测量方法无法提取高频振动信号的问题,提出了一种改进的零均值归一化方差和(ZNSSD)算法。在该技术中,利用高速摄像机捕获目标振动的高速图像序列。然后,引入亚像素精度的ZNSSD模板匹配算法,在计算机上对捕获的图像进行处理。此外,提出了一种改进的搜索算法——基于图像金字塔的ZNSSD模板匹配算法(ZNSSD- p),大大减少了计算时间,提高了效率。然后,提出了一种基于图像金字塔的跳跃式ZNSSD模板匹配算法(J-ZNSSD-P),进一步提高了ZNSSD- p算法的效率。采用光栅尺运动平台和声障对振动信号进行提取。结果表明,该方法具有较高的提取精度和提取效率。
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来源期刊
Systems Science & Control Engineering
Systems Science & Control Engineering AUTOMATION & CONTROL SYSTEMS-
CiteScore
9.50
自引率
2.40%
发文量
70
审稿时长
29 weeks
期刊介绍: Systems Science & Control Engineering is a world-leading fully open access journal covering all areas of theoretical and applied systems science and control engineering. The journal encourages the submission of original articles, reviews and short communications in areas including, but not limited to: · artificial intelligence · complex systems · complex networks · control theory · control applications · cybernetics · dynamical systems theory · operations research · systems biology · systems dynamics · systems ecology · systems engineering · systems psychology · systems theory
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