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Fast autofocusing in digital holography using the magnitude differential
Lyu, Meng; Yuan, Caojin; Li, Dayan; Situ, Guohai; ghsitu@siom.ac.cn
2017
发表期刊Appl. Optics
卷号56期号:13页码:F152
摘要Typical methods of automatic estimation of focusing in digital holography calculate every single reconstructed frame to get a critical function and then ascertain the focal plane by finding the extreme value of that function. Here, we propose a digital holographic autofocusing method that computes the focused distance using the first longitudinal difference of the magnitude of the reconstructed image. We demonstrate the proposed method with both numerical simulations and optical experiments of amplitude-contrast and phase-contrast objects. The results suggest that the proposed method performs better than other existing methods, in terms of applicability and computation efficiency, with potential applications in industrial and biomedical inspections where automatic focus tracking is necessary. (C) 2017 Optical Society of America
文章类型Article
部门归属信息光电
DOI10.1364/AO.56.00F152
资助者National Natural Science Foundation of China (NSFC) [61327902, 61377005]; Chinese Academy of Sciences (CAS) [QYZDB-SSW-JSC002] ; National Natural Science Foundation of China (NSFC) [61327902, 61377005]; Chinese Academy of Sciences (CAS) [QYZDB-SSW-JSC002] ; National Natural Science Foundation of China (NSFC) [61327902, 61377005]; Chinese Academy of Sciences (CAS) [QYZDB-SSW-JSC002] ; National Natural Science Foundation of China (NSFC) [61327902, 61377005]; Chinese Academy of Sciences (CAS) [QYZDB-SSW-JSC002]
收录类别SCI
资助者National Natural Science Foundation of China (NSFC) [61327902, 61377005]; Chinese Academy of Sciences (CAS) [QYZDB-SSW-JSC002] ; National Natural Science Foundation of China (NSFC) [61327902, 61377005]; Chinese Academy of Sciences (CAS) [QYZDB-SSW-JSC002] ; National Natural Science Foundation of China (NSFC) [61327902, 61377005]; Chinese Academy of Sciences (CAS) [QYZDB-SSW-JSC002] ; National Natural Science Foundation of China (NSFC) [61327902, 61377005]; Chinese Academy of Sciences (CAS) [QYZDB-SSW-JSC002]
WOS记录号WOS:000400503900024
引用统计
文献类型期刊论文
条目标识符http://ir.siom.ac.cn/handle/181231/28492
专题信息光学与光电技术实验室
通讯作者ghsitu@siom.ac.cn
作者单位中国科学院上海光学精密机械研究所
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GB/T 7714
Lyu, Meng,Yuan, Caojin,Li, Dayan,et al. Fast autofocusing in digital holography using the magnitude differential[J]. Appl. Optics,2017,56(13):F152.
APA Lyu, Meng,Yuan, Caojin,Li, Dayan,Situ, Guohai,&ghsitu@siom.ac.cn.(2017).Fast autofocusing in digital holography using the magnitude differential.Appl. Optics,56(13),F152.
MLA Lyu, Meng,et al."Fast autofocusing in digital holography using the magnitude differential".Appl. Optics 56.13(2017):F152.
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