Abstract
The surface profile of a spare parts with a variable speed is measured by a line-scan image system. The experimental system is combined with a line-scan CCD camera, a projector, a translation stage, a speed coder and a personal computer. By using the speed coder, the relative moving speed is obtained and the pulse signal is fed back to the computer for synchronizing the spare parts and the line-scan CCD camera. The deformed fringe pattern of the spare parts is captured and stored in the personal computer. The classical fringe skeletoning method and Fourier transform method are used to evaluate the fringe deformation. Thus, the object surface profile can be obtained following the geometric relationship between the fringe deformation and the object surface height.
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