中山大学学报（自然科学版）（中英文）2025，Vol.64Issue(2)：112-119,8.DOI:10.13471/j.cnki.acta.snus.ZR20240193
基于亮度和相位光流的结构振动测量对比
Comparison of structural vibration measurement based on intensity-based and phase-based optical flow
摘要
Abstract
Phase-based optical flow method firstly obtains the local phase information of the image through wavelet filtering,and then estimates the displacement of structures with phase gradient and phase change.It has good robustness to illumination change and image noise,and has a certain improvement in the measurement range compared with the traditional intensity-based optical flow method.Several simulation experiments were designed for image noise and illumination change respectively.The measurement errors of the two methods were compared under different sizes of displacement.Those results show that the phase-based optical flow method has better measurement effect when there is more than 1 pixel displacement,noise and illumination change.Finally,two methods are used to estimate the motion of the simulated and actual cantilever beam vibration video,and the validity of the two methods and the superiority of phase-based optical flow method in the estimation of structural micro-vibration is verified.关键词
图像位移估计/亮度光流/相位光流/微小位移Key words
image displacement estimation/intensity-based optical flow/phase-based optical flow/micro displacement分类
数理科学引用本文复制引用
唐小洋,谢培悦,刘祚秋,汪利,焦柯,王建强..基于亮度和相位光流的结构振动测量对比[J].中山大学学报（自然科学版）（中英文）,2025,64(2):112-119,8.基金项目
广东省重点领域研发计划(2022B0101080001) （2022B0101080001）
国家自然科学基金(11972380) （11972380）
