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Novel functional phase unwrapping algorithm basing on image analysising

LIU Xiao jun 1, CHANG Ming 2, GAO Yong sheng 3, LI Zhu 1 (1. School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China) (2. Department of Mechanical Engineering, Chungyuan Christian Universi  
Unwrapping is an important link to ensure precision phase measuring in phase shifting interference techniques. Here a novel algorithm for phase unwrapping is introduced. Based on the traditional phase unwrapping algorithm and the characteristic that interference phase is smooth, the algorithm adopts image processing techniques to discernment and revise the unwrapping errors and its derive errors. The experimental results show the algorithm needs less calculating amounts and spends less time and has less deformation to data information, so high phase recovery precision is ensured. The algorithm is functional for measuring smooth phase.
【Fund】: 国家自然科学基金资助项目!(编号:59975035)
【CateGory Index】: TP391.4
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