Two-Step Random Phase Shifting Algorithms Based on Fast Least-Squares Method

doi:10.3788/AOS202141.0312003

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	Two-Step Random Phase Shifting Algorithms Based on Fast Least-Squares Method
	Y. Zhang
刊名	Guangxue Xuebao/Acta Optica Sinica
	2021
卷号	41 期号:3
ISSN号	2532239
DOI	10.3788/AOS202141.0312003
英文摘要	To achieve high accuracy with less computational time in the phase shifting interferometry, a series of two-step random phase shifting algorithms based on fast least-squares method are proposed. First, the phases extracted by the sum and difference normalization algorithm with double pre-filtering, the sum and difference normalization algorithm with single pre-filtering, and Gram-Schmidt orthonormalization method are used as the initial values for iteration. Then, the two phase shifted interferograms without filtering are used in the calculation with the least-squares method, and the final phase is obtained. In order to save time, only limited pixels are chosen to take part in the iteration. The comparison indicates that the two-step phase shifting algorithm based on the sum and difference normalization algorithm with single pre-filtering and fast least-squares method has the best comprehensive performance, and it can obtain high accuracy with less time. 2021, Chinese Lasers Press. All right reserved.
URL标识	查看原文
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/65725]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. Zhang. Two-Step Random Phase Shifting Algorithms Based on Fast Least-Squares Method[J]. Guangxue Xuebao/Acta Optica Sinica,2021,41(3).
APA	Y. Zhang.(2021).Two-Step Random Phase Shifting Algorithms Based on Fast Least-Squares Method.Guangxue Xuebao/Acta Optica Sinica,41(3).
MLA	Y. Zhang."Two-Step Random Phase Shifting Algorithms Based on Fast Least-Squares Method".Guangxue Xuebao/Acta Optica Sinica 41.3(2021).