Image Processing System For Modern Optical Measurement Based On LabVIEW And MATLAB

Modern optical measurement is a kind of new technique which develops in recent years. It can be used for roughness evaluation, deformation measurement and vibration analysis of objects. It mainly includes holography interferometry, moire interferometry and speckle interferometry.This thesis, based on LabVIEW and MATLAB, develops the digital speckle image processing system for modern optical measurement and introduces the technique of virtual instrument into the field of modern optical measurement for the first time. The system, based on digital speckle metrology technique, can capture images under LabVIEW and process the obtained images by calling MATLAB within LabVIEW. The system developed in the thesis can be used in measurements of holograpgy and moire interferometry.The main research work in the thesis involves: (1) Introducing the virtual instrument technique in the field of modern optical measurement, establishing the virtual instrument system of optical measurement, and achieving the capturing and processing of the images; (2) Investgating the filtering techniques in spatial and frequency domains, putting forward the best filtering methods for the images obtained in modern optical measurement, and obtaining the processed results with high quality.