10 January 2018 Laser speckle contrast imaging using light field microscope approach
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Abstract
In this paper, a laser speckle contrast imaging (LSCI) system using light field (LF) microscope approach is proposed. As far as we known, it is first time to combine LSCI with LF. To verify this idea, a prototype consists of a modified LF microscope imaging system and an experimental device was built. A commercially used Lytro camera was modified for microscope imaging. Hollow glass tubes with different depth fixed in glass dish were used to simulate the vessels in brain and test the performance of the system. Compared with conventional LSCI, three new functions can be realized by using our system, which include refocusing, extending the depth of field (DOF) and gathering 3D information. Experiments show that the principle is feasible and the proposed system works well.
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Xiaohui Ma, Anting Wang, Fenghua Ma, Zi Wang, Hai Ming, "Laser speckle contrast imaging using light field microscope approach", Proc. SPIE 10616, 2017 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 1061612 (10 January 2018); doi: 10.1117/12.2293459; https://doi.org/10.1117/12.2293459
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