Interference fringe distortion correction method and system based on image quality degradation model

Abstract

The present disclosure relates to the field of non-contact measurement, and particularly to an interference fringe distortion correction method and system based on an image quality degradation model. The method includes: constructing the image quality degradation model of a deviation amount of interference fringe image motion-phase information-vibration data measurement error; isolating local distortion of the interference fringes purely induced by a to-be-detected object from a raw interference fringe image actually generated by a to-be-detected object; inputting the isolated local distortion of the interference fringes into the image quality degradation model, calculating an error amount of vibration modal information of the to-be-detected object, and performing reverse compensation correction. The present disclosure achieves high-precision real-time error compensation, so as to assist high-accuracy vibration monitoring.