大景深成像系统中目标离焦量的测定
Measurement of the Object Defocus with Extended Depth-of-field Imaging System
查看参考文献15篇
文摘
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以三次相位板为例,基于菲涅尔积分法建立了相位板横向偏移量与成像系统离焦量之间的函数关系.由于解码图像中伪影现象的产生是由编码点扩散函数和解码点扩散函数的不一致引起的,可将伪影现象作为成像系统离焦量的评判标准.结合相位板横向偏移量与离焦量的关系和产生伪影现象的物理内涵,提出了大景深成像系统中物体离焦量的测定方法.该方法可同时获取目标的离焦像差图和大景深、无伪影的解码图像,并对所提出的方法进行了实验验证.此外,本文所提出的方法同样适用于其他奇对称型相位板,这进一步拓展了奇对称型相位板景深延拓成像系统在实际应用中的范围. |
其他语种文摘
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The relationship between defocus and the lateral shifts of cubic phase mask has been built based on the Fresnel integral.Based on the fact that the artifacts appeared in the decoded images are resulted from the differences between the coding and decoding point spread function,the artifacts can be treated as indicators of defocus.Finally,we combined the built relationship previously and the reason producing artifacts in the decoded images to propose an imaging way to obtain defocus map and artifacts-free images with laterally shifted cubic phase mask,which subsequently verified by experiments with our designed imaging system.The proposed method avoids errors introduced by shifting the ideal imaging plane deliberately.Moreover,although the idea we developed only was analyzed and illustrated with cubic phase mask,it also can be generalized to other types of odd-symmetric phase masks,which further widen the application range of odd-symmetric phase mask imaging system. |
来源
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光子学报
,2018,47(10):1011003-1-1011003-8 【核心库】
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DOI
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10.3788/gzxb20184710.1011003
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关键词
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相位板
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景深延拓
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点扩散函数
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伪影
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离焦量
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地址
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中国科学院西安光学精密机械研究所, 西安, 710119
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1004-4213 |
学科
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物理学 |
基金
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国家高技术研究发展计划
;
中国科学院" 西部之光" 人才培养引进计划
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文献收藏号
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CSCD:6351512
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参考文献 共
15
共1页
|
1.
Dowski E R. Extended depth of field through wave-front coding.
Applied Optics,1995,34(11):1859-1866
|
被引
90
次
|
|
|
|
2.
Zhao H. Optimized logarithmic phase masks used to generate defocus invariant modulation transfer function for wavefront coding system.
Optics Letters,2010,35(15):2630-2632
|
被引
5
次
|
|
|
|
3.
Yang Q G. Optimized phase pupil masks for extended depth of field.
Optics Communications,2007,272(2007):56-66
|
被引
12
次
|
|
|
|
4.
Caron N. Polynomial phase masks for extending the depth of field of a microscope.
Applied Optics,2008,47(22):E39-E43
|
被引
2
次
|
|
|
|
5.
Zhou F. Rational phase mask to extend the depth of field in optical-digital hybrid imaging systems.
Optics Letters,2009,34(3):380-382
|
被引
5
次
|
|
|
|
6.
Zhao H. Optimized sinusoidal phase mask to extend the depth of field of an incoherent imaging systems.
Optics Letters,2010,35(2):267-269
|
被引
8
次
|
|
|
|
7.
Le V N. Optimized asymmetrical tangent phase mask to obtain defocus invariant modulation transfer function in incoherent imaging systems.
Optics Letters,2014,39(7):2171-2174
|
被引
6
次
|
|
|
|
8.
Le V N. Optimized square-root phase mask to generate defocus-invariant modulation transfer function in hybrid imaging systems.
Optical Engineering,2015,54(3):035103
|
被引
2
次
|
|
|
|
9.
Zhou L. Inverse sinusoidal phase mask to extend the depth of field of incoherent imaging systems.
Optik,2016,127(2016):9105-9110
|
被引
1
次
|
|
|
|
10.
Vettenburg T. Fidelity optimization for aberration-tolerant hybrid imaging systems.
Optics Express,2010,18(9):9220-9228
|
被引
1
次
|
|
|
|
11.
周亮. 可调谐相位板空域频域联合分析.
物理学报,2015,64(22):224207
|
被引
1
次
|
|
|
|
12.
Demenikov M. A technique to remove image artefacts in optical systems with wavefront coding.
SPIE. 7429,2009:7429N
|
被引
1
次
|
|
|
|
13.
Zammit P. Extended depth-of-field imaging and ranging in a snapshot.
Optica,2014,1(4):209-216
|
被引
1
次
|
|
|
|
14.
Zammit P. 3Dimaging and ranging in a snapshot.
SPIE. 9630,2016:963004
|
被引
1
次
|
|
|
|
15.
Zhou Y Z. 3Dmicrofluidic particle image velocimetry with extended depth-of-field and a single camera.
3DImage Acquisition and Display:Technology,Perception and Applications,2016:JT3A.40
|
被引
1
次
|
|
|
|
|