Nanoscale depth reconstruction from defocus: Within an optical diffraction model

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	Nanoscale depth reconstruction from defocus: Within an optical diffraction model
	Wei YJ(魏阳杰); Wu CD(吴成东); Dong ZL(董再励)
刊名	Optics Express
	2014
卷号	22 期号:21 页码:25481-25493
ISSN号	1094-4087
通讯作者	魏阳杰
产权排序	2
中文摘要	Depth from defocus (DFD) based on optical methods is an effective method for depth reconstruction from 2D optical images. However, due to optical diffraction, optical path deviation occurs, which results in blurring imaging. Blurring, in turn, results in inaccurate depth reconstructions using DFD. In this paper, a nanoscale depth reconstruction method using defocus with optical diffraction is proposed. A blurring model is proposed by considering optical diffraction, leading to a much higher accuracy in depth reconstruction. Firstly, Fresnel diffraction in an optical system is analyzed, and a relationship between intensity distribution and depth information is developed. Secondly, a blurring imaging model with relative blurring and heat diffusion is developed through curving fitting of a numerical model. In this way, a new DFD method with optical diffraction is proposed. Finally, experimental results show that this new algorithm is more effective for depth reconstruction on the nanoscale.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Optics
研究领域[WOS]	Optics
关键词[WOS]	SHAPE
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000344004600084
公开日期	2014-11-29
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/15282]
专题	沈阳自动化研究所_机器人学研究室
推荐引用方式 GB/T 7714	Wei YJ,Wu CD,Dong ZL. Nanoscale depth reconstruction from defocus: Within an optical diffraction model[J]. Optics Express,2014,22(21):25481-25493.
APA	Wei YJ,Wu CD,&Dong ZL.(2014).Nanoscale depth reconstruction from defocus: Within an optical diffraction model.Optics Express,22(21),25481-25493.
MLA	Wei YJ,et al."Nanoscale depth reconstruction from defocus: Within an optical diffraction model".Optics Express 22.21(2014):25481-25493.