Abstract
Phase analysis methods for projected gratings have been often used for non-contacting shape measurement. We have developed the integrated phase-shifting method for real-time shape and deformation measurement with high resolution. But there is a problem that the measuring error becomes larger when the object is moving speedily because several images are captured while shifting the grating phase. In order to solve this problem, we developed a DMD reflection-type CCD camera that we call a DMD camera. The each DMD pixel works as a high-speed controllable shutter of the corresponding CCD pixel. In this paper, we propose an integrated phase-shifting method using correlation for a real-time shape and deformation measurement. This method can analyze phase distributions of projected gratings from an image taken by the DMD camera. The principle and an experimental result to apply this method to a shape measurement are shown.
