Development of Automatic Measurement System of Surface Shape using Grating Projection Method

Abstract

An automatic measurement system of surface shape using grating projection method has been proposed. The system is composed of an optical spatial modulator from which grating patterns are projected on the surface of the object, a CCD camera and a computer. The patterns on the surface of the object were taken into the computer by the CCD camera, and the 3D coordinate of the surface of the object was calculated. The system with high measuring speed and high accuracy was improved using the optical spatial modulator.