Vibration displacement extraction method based on SVD decomposition and wavelet denoising
Xingyuan Zhou, Jinlei Zhuang, Yang Pan, Bingyou Liu · 2022
To address the problem of noise signal interference in singular value vibration signal extraction methods, this paper proposes a vibration extraction algorithm combining singular value decomposition and improved wavelet denoising. Firstly, the singular value decomposition method is used to extract the useful information in the high-speed video sequence, and the singular values and singular vectors associated with the vibration information are selected by judgement. Then the vibration signal is denoised using an improved wavelet denoising function. Through comparison experiments, the algorithm proposed in this paper can effectively reduce the noise in vibration signals and has some prospects in vibration signal processing applications.