散射介质中层间杂质检测效率的影响因素及分析

周飞; 丁天怀

doi:10.7498/aps.59.8451

摘要

散射介质中层间杂质检测是一个非常重要的研究课题.改进现有的Monte Carlo方法,模拟大量光子在散射介质中的传输,得到入射光强、杂质埋藏深度、介质折射率、介质散射系数和各向异性因子对光学透反射成像法检测层间杂质效率的影响规律.结果表明,入射光强、杂质埋藏深度和介质折射率对透反射成像检测结果均有影响,且影响规律相似.增加入射光强、减小杂质埋藏深度或减小介质折射率均可提高反射光成像的检测效率;增大入射光强、减小介质折射率、减小介质散射系数或增大各向异性因子均可提高透射光成像的检测效率.这些规律对散射介质中层间杂质检测具有一定指导意义.

关键词:

Abstract

Detection of buried trash in scattering media is a very important research project. Detection efficiency is influenced by several imaging parameters, such as incident light intensity, trash buried depth, medium refractivity, medium scattering coefficient and medium anisotropic factor. Firstly, current Monte Carlo algorithm is revised. Secondly, influential laws of those parameters are researched by simulating a great number of photons propagating in a scattering medium. The results indicate that light intensity, trash buried depth and medium refractivity greatly affect both reflection and transmission imaging results; and their influential laws are similar. Detection efficiency of reflection imaging can be improved by increasing light intensity, reducing trash buried depth or medium refractivity. Detection efficiency of transmission imaging can be improved by increasing light intensity, reducing medium refractivity and scattering coefficient, or increasing anisotropic factor. These conclusions have universal significance of guidance in the detection of buried trash in scattering media.

Keywords:

作者及机构信息

周飞,
丁天怀

1.
清华大学精密仪器与机械学系,北京 100084

基金项目: 江苏省科技攻关计划(批准号:BE2007056)资助的课题.

Authors and contacts

1.
Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China

参考文献

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施引文献

[1]	Canpolat M, Akyuz M, Gokhan G A, Gurer E I, Tuncer R 2009 J. Biomed. Opt. 14 054021
[2]	Doxaran D, Babin M, Leymarie E 2007 Opt. Express 15 12834
[3]	Jia D Y, Ding T H 2005 Opt. Eng. 44 076402
[4]	Chandrasekhar S 1950 Radiative Transfer (Oxford: Clarendon Press) p37
[5]	Gate L F 1974 Appl. Opt. 13 236
[6]	Contini D, Martelli F, Zaccanti G 1997 Appl. Opt. 36 4587
[7]	Xu T, Zhang C P, Tian J G, Song F, Wang X Y, Zhao C M 2005 Chin. Phys. Lett. 22 1660
[8]	Kim A D, Ishimaru A 1998 Appl. Opt. 37 5313
[9]	Li J P, Chen B Q 2005 J. Appl. Opt. 26 20 (in Chinese) [李剑平、陈冰泉 2005 应用光学 26 20]
[10]	Wilson B C, Adam G 1983 Med. Phys. 10 824
[11]	Yun T, Zeng N, Li W 2009 Opt. Express 17 16590
[12]	Xu T, Zhang C P, Chen G Y 2005 Chin. Phys. 14 1813
[13]	Huang Y, Liang X G, Xia X L 2005 J. Quant. Spectrosc. Radiat. Transfer 92 111
[14]	Pery E, Guillemin F 2009 J. Biomed. Opt. 14 024048
[15]	Henyey L G, Greeenstein J L 1941 J. Astro. Phys. 93 70
[16]	Peters V G, Wyman D R 1990 Phys. Med. Biol. 35 1317
[17]	Cheong W F, Prahl S A, Welch A J 1990 IEEE J. Quantum Electron. 26 2166
[18]	Wang L, Jacquesa S L, Zheng L 1995 Comput. Meth. Prog. Biol. 47 131
[19]	Wang J G, Wang G Y, Xu Z Z 2008 Chin. Phys. Lett. 25 530
[20]	Jia D Y, Ding T H 2006 J. Tsinghua Univ. (Sci. Tech.Ed.) 46 176 (in Chinese) [郏东耀、丁天怀 2006 清华大学学报(自然科学版) 46 176]
[21]	Jia D Y, Ding T H 2005 Acta Phys. Sin. 54 4058 (in Chinese) [郏东耀、丁天怀 2005 物理学报 54 4058]
[22]	Yeh A T, Hirshburg J 2006 J. Biomed. Opt. 11 014003
[23]	Jia D Y, Ding T H 2005 Meas. Sci. Tech. 16 1355
[24]	Xu L Q, Li H, Xiao Z Y 2008 Acta Phys. Sin. 57 6030 (in Chinese) [徐兰青、李晖、肖郑颖 2008 物理学报 57 6030]
[25]	Mu T K, Zhang C M 2010 Chin. Phys. B 19 060702

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