Principles and calibration of structured light based 3D non-contact measurement systems
In recent years,with the rapid development of the machining industry and the continuous im-provement in the accuracy of non-contact measurement technologies,contact-based three-dimensional co-ordinate measurement technology has become unable to meet the demands in terms of measurement effi-ciency and data processing due to the limitations of its measurement principles.The three-dimensional non-contact measurement system based on structured light,which employs the principle of structured light vision,projects a patterned structured light onto the surface of the object being measured.This cre-ates visible features that are calculated using mathematical models to obtain the surface characteristics of the object.This measurement method has been increasingly applied in the process of product quality con-trol due to its high measurement efficiency,comprehensive data processing,and wide application scope.It is widely used in fields such as automotive manufacturing,machining,aerospace,and more.By introducing the measurement principles and calibration methods,and conducting an uncertainty evaluation of the calibration methods,the feasibility and reliability of this method are determined.
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