An Improved Time Defocus Analysis Method for Measuring 3D

With the development of 3D measurement technology, how to quickly and accurately measure the three-dimensional shape of large scene objects has become a research hotspot.In this paper, temporal defocus analysis method is deeply analyzed and improved on the basis of this method, and combined with phase measurement profilometry to measure the three-dimensional information of the surface contour of the large scene object. The experimental results show that different defocus calculation methods and different fitting functions will bring different calculation results.