THE TECHNIQUES ON INCOHERENT STRUCTUREDILLUMINATION BASED ON CENTRAL ALGORITHM
基于重心算法的结构光投影技术研究及应用

A new algorithm,called central algorithm,is proposed in this paper.The new algorithm can simply find the central position of incoherent structured illumination accurately.Based on the algorithm,two incoherent structured projecting technique and their accuracy are dicussed and analyzed.They are step projection and slit projection.It is proved by testing that the step projection has higher accuracy than the slit projection and other method.And the step projection is fit for measuring the shape of asymmetrical and irregular objects,especialy for objects which have great grads change on its surfaces.It is difficulty to measure by using traditional structured illumination.The shape of piston head and the whole shape of flow passage of engine,are measured by using the central algorithm and the step projection.The experiment results are offered in three dimensional gridding grawing.It also proves that the central algorithm and the step projection are reliable.