Figure Pretreatment Technology, Dsp-based Digital Wavefront Interferometer

With the development of modern science and technology, online detecting techniquewith high speed and high precision has been used increasingly by researchers inengineering production field. As the most effective and exact apparatus used to detectoptics system and optics component, interferometer is developing quickly and itsminiaturization has become one of the hotspots at present. In this paper, a systemic studywas conducted to process interferograms and to realize real-time online hardware, thestudy gives the miniaturization a solid basis.On the basis of interferograms characteristics analysis and image noise analysis, thestudy of interferograms processing algorithms real time based on DSP hardware isconducted. By the analysis of interferograms characteristics, study on interference stripesnoise and consideration of images processing results and easily hardware realization,multi-algorithms to smooth interferograms are analyzed and compared. At the same time,the software system of smoothing interferograms is designed which is based on DSPhardware and the real-time algorithms hardware operation is realized. The processingalgorithms of interferograms are effective and can be realized by hardware easily vialarge numbers of experiments. Meanwhile, the DSP hardware can be used to design andsimulate diminutive interferometer.