Development of Accurate Shape Measurement System Using Multiple Reference Planes(Optical Method 2)

Abstract

We previously developed a shape measurement method by grating projection method using two reference planes. Because this method does not use lens center positions of a projector and a camera and uses two reference planes, the resultant shape is accurate. But the method has a problem that the accuracy is worse at intermediate positions between the two reference planes than at positions near the reference planes. In this paper, we develop an accurate shape measurement system using multiple reference planes to overcome the above problem. The principle of the shape measurement and the result of an experiment are shown.