Uncertainty Evaluation in Surface Structured Light Measurement

Surface structured light 3D measurement is a typical non-contact method based on optics, with a wide range of applications in 3D scanning measurement field. In order to evaluate the quality of the results, the measurement uncertainty is analyzed. The principle of the surface structured light 3D measurement method is briefly introduced, and the possible influencing factors of measurement accuracy are fully analyzed. The sources of measurement uncertainty are analyzed by the method based on the statistical characteristics of measurement values, and the uncertainty evaluation models are established. Both the GUM method and MCM method are used to evaluate the measurement uncertainty, and finally, the uncertainty evaluation result for dimensional measurement of the surface structured light 3D measuring equipment is obtained.