Microscopic fringe projection prolometry comparison based on stereoscopic microscope and telecentric lenses

摘要

As the digital projector develops, fringe projection prolometry has been widely used in the fast 3D measurement.However, the eld of view of traditional 3D measurement systems is commonly in decimeters, which limits the3D reconstruction accuracy to tens of microns. If we want to improve the accuracy further, we have to minimizethe eld of view and meanwhile increase the fringe density in space. For this purpose, we developed two kindsof systems based on a stereo-microscope and telecentric lenses, respectively. We also studied the correspondingcalibration frameworks and developed fast 3D measurement methods with both Fourier transform and phase-shifting algorithms for real-time 3D reconstruction of micro-scale objects.