12 January 2018 Influences of overlap index on Fourier ptychography imaging
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Abstract
Fourier ptychography is a new type of synthetic aperture imaging technique based on phase retrieval method which can improve microscopeic imaging performance beyond the diffraction limit of the employed optical components by illuminating the object with oblique waves of different incident angles where the field of view remains unchanged. illumination angle and the overlap rate of spectrum will have a certain impact on the quality of reconstruction. In this paper, we study the effects of illumination angle and spectral overlap rate on the image quality of Fourier ptychography. The simulation results show that increasing the illumination angle and spectral overlap can improve the resolution, but there is a threshold for the key parameters of spectral overlap rate. The convergence rate decreases when the overlap rate exceeds 70%, and the reconstruction process is more time-consuming due to the high overlap rate. However the results of proposed study shows that an overlap of 60% is the optimal choice to acquire a high-quality recovery with high speed.
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Honghong Wang, Honghong Wang, Lu Rong, Lu Rong, Dayong Wang, Dayong Wang, Xu Zhang, Xu Zhang, Changchao Zhai, Changchao Zhai, Spozmai Panezai, Spozmai Panezai, Yunxin Wang, Yunxin Wang, Jie Zhao, Jie Zhao, } "Influences of overlap index on Fourier ptychography imaging", Proc. SPIE 10620, 2017 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology, 106201N (12 January 2018); doi: 10.1117/12.2295548; https://doi.org/10.1117/12.2295548
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