| Citation: | GU Mengtao, SONG Xianglei, ZHANG Biao, et al. Point spread function of microscopic light field imaging based on wave optics[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(8): 1552-1559. doi: 10.13700/j.bh.1001-5965.2018.0689(in Chinese)
|
The light field Micro-PIV deconvolutes the light field image by Lucy-Richardson (L-R) algorithm to obtain the three-dimensional coordinate information of the tracer particle. The accurate point spread function (PSF) is the premise of the L-R algorithm to complete the reconstruction, and the existing PSF model is not suitable for the light field Micro-PIV system. In this paper, the PSF model of a microscopic light field imaging system based on wave optics is established. Numerical simulation is carried out to calculate the PSF. The similarity between the calculated and experimental PSF images is determined by the structural similarity algorithm. Combining the theoretically calculated PSF, the L-R algorithm is used to reconstruct the single particle and the flow field of tracer particles at different concentrations. Results show that the similarity between simulated and actual PSF is more than 0.94, indicating that the PSF model has high accuracy. The three-dimensional coordinate error of a single particle is within one pixel, and the three-dimensional coordinate information of the tracer particles at different concentrations can be accurately obtained, which further verifies the accuracy of the PSF model and lays the foundation for light field Micro-PIV to realize instantaneous three-dimensional velocity field measurement.
| [1] |
葛洋, 姜未汀.微通道换热器的研究及应用现状[J].化工进展, 2016, 35(s1):10-15. http://d.old.wanfangdata.com.cn/Periodical/hgjz2016z1003
GE Y, JIANG W T.The research progress and application of the micro-channel heat exchanger[J]. Chemical Industry and Engineering Progress, 2016, 35(s1):10-15(in Chinese). http://d.old.wanfangdata.com.cn/Periodical/hgjz2016z1003
|
| [2] |
LOUSSIF N, ORFI J.Simultaneously developing laminar flow in an isothermal micro-tube with slip flow models[J]. Heat & Mass Transfer, 2014, 50(4):573-582. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=c19c81220fa4ba7e61369e91cfde63ff
|
| [3] |
PRAKASH S.Microfluidic devices in nanotechnology[M]. New York:Wiley, 2010.
|
| [4] |
RAFFEL M, WILLERT C E, SCARANO F, et al.Micro-PIV[M]//RAFFEL M, WILLERT C E, WERELEY S T, et al.Particle Image Velocimetry.Berlin: Springer, 2018: 241-258.
|
| [5] |
LINDKEN R, WESTERWEEL J, WIENEKE B.Stereoscopic micro particle image velocimetry[J]. Experiments in Fluids, 2006, 41(2):161-171. doi: 10.1007/s00348-006-0154-5
|
| [6] |
SHINOHARA K, SUGⅡ Y, JEONG J H, et al.Development of a three-dimensional scanning microparticle image velocimetry system using a piezo actuator[J]. Review of Scientific Instruments, 2005, 76(10):106109. doi: 10.1063/1.2114889
|
| [7] |
LEVOY M, REN N, ADAMS A, et al.Light field microscopy[C]//ACM SIGGRAPH 2006.New York: ACM, 2006: 924-934.
|
| [8] |
LV H, GU K, ZHANG Y, et al.Light field depth estimation exploiting linear structure in EPI[C]//IEEE International Conference on Multimedia & Expo Workshops.Piscataway, NJ: IEEE Press, 2015: 1-6.
|
| [9] |
WANG Z, BOVIK A C, LU L.Why is image quality assessment so difficult [C]//IEEE International Conference on Acoustics, Speech, and Signal Processing.Piscataway, NJ: IEEE Press, 2011: 3313-3316.
|
| [10] |
ATTENDU J M, ROSS A.Time domain nearfield acoustical holography with three-dimensional linear deconvolution[J]. Journal of the Acoustical Society of America, 2018, 143(3):1672-1683. doi: 10.1121/1.5027841
|
| [11] |
LEVIN A, WEISS Y, DURAND F, et al.Understanding blind deconvolution algorithms[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2011, 33(12):2354-2367. doi: 10.1109/TPAMI.2011.148
|
| [12] |
PONTI M, HELOU E S, FERREIRA P J S G, et al.Image restoration using gradient iteration and constraints for band extrapolation[J]. IEEE Journal of Selected Topics in Signal Processing, 2016, 10(1):71-80. doi: 10.1109/JSTSP.2015.2493978
|
| [13] |
GERSHUN A.The light field[J]. Studies in Applied Mathematics, 1939, 18(1-4):51-151. http://d.old.wanfangdata.com.cn/OAPaper/oai_arXiv.org_astro-ph%2f0609073
|
| [14] |
GU M.Advanced optical imaging theory[M]. Berlin:Springer, 2000.
|
| [15] |
WANG Z, BOVIK A C, SHEIKH H R, et al.Image quality assessment:From error visibility to structural similarity[J]. IEEE Transactions on Image Process, 2004, 13(4):600-612. doi: 10.1109/TIP.2003.819861
|
Figures(9) / Tables(2)
Copyright © Journal of Beijing University of Aeronautics and Astronautics
Address: Editorial Department of Journal of Beijing University of Aeronautics and Astronautics, 37 Xueyuan Road, Haidian District, Beijing Post Code: 100191 Email: jbuaa@buaa.edu.cn
Supported by:
Beijing Renhe Information Technology Co., Ltd.
DownLoad:
