Ms. Jing Wang Profile

Jing Wang

at XIOPM CAS

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Proceedings Article | 5 November 2020 Paper

Research on image preprocessing techniques needed for long-distance camera scanning Fourier ptychographic imaging

Jing Wang, Hui Zhao, Mingyang Yang, Zhixin Li, Meng Xiang, Yuming Wang, Xuewu Fan

Proceedings Volume 11567, 115672R (2020) https://doi.org/10.1117/12.2579989

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With the development of the fourier ptychography in microscopy imaging, more and more researchers consider applying fourier ptychography in long-distance imaging. However being different from microscopic imaging, long distance fourier ptychographic imaging will face more challenges, one of which is the source image quality. In this manuscript, the influence of the source image quality on camera scanning FP imaging will be investigated and simulated. In the first part, the calibration aims to solve the influence of unenenly illumination. After that, a poisson-gaussian mixed noise model based denoising is uesd and could effectively suppresses the noise through parameter estimation. Finally, Phase correalation regisitrtion has to be used to correct the mismatch between adjacent images caused by camera scanning mode. The simulation results demonstrate the effectiveness of the preprocessing methods and could make FP more robust.The signal to noise ratio could reach to 40.5dB while obtained 5×improvement in resolution.

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