Research on Real-time Measuring Method of Dynamic Deformation Based on Machine Vision and Its Application
Dynamic deformation measurement of machine parts in fatigue strength test is studied by using machine vision technique. Considering the uncertainty of parts surface, we adopt circular mark to locate the object profile in order to obtain high quality images. Through some image pre-processing with linear filtering, continuous contour searching method and circular detection based on random Hough transform (RHT), the real-time deformation can be measured with image characteristic parameters. In the practical application, the deformation of the loaded bicycle handle-bar is calculated. The test results show that the machine vision measurement is very effective; measurement resolution attains 0.1 mm/pixel; the discrete degree of measurement data is low and the system meets the requirement of real-time measurement. The study proves that the measurement method of dynamic deformation based on machine vision is feasible, which can give some help for fatigue strength test of machine part and other structure deformation.
Dynamic Deformation Image Processing Machine Vision Measurement Circular Mark Location Random Hough Transformation
Li-zong Lin Xiao-peng Ni Luo-shan Zhou Zhi-qin Qian
School of Mechanical and Power Engineering,East China University of Science and Technology.Shanghai, China
国际会议
合肥
英文
3572-3575
2011-09-23（万方平台首次上网日期，不代表论文的发表时间）