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- W4297989273 abstract "Ptychography is a coherent diffractive imaging technique that surpasses the resolution limitations of typical X-ray optics. It generates label-free, high-contrast quantitative amplitude and phase images without requiring prior knowledge. How to quickly recover high-fidelity amplitude and phase contrast images of an authentic sample is a challenge, however, due to the expensive computation that precludes real-time imaging. This paper proposes a framework with a double-branch network, Π-Net, to solve this complex problem. It can simultaneously and robustly reconstruct the object's phase and amplitude information from a degraded image. By analyzing the performance of various activation functions, we find that the activation function plays a crucial role in phase retrieval. Numerical experiments demonstrate the robustness of Π-Net, and our reconstruction results are superior to those of state-of-the-art methods. In addition, ablation studies have revealed that the negative output of neurons can contribute to improved reconstruction outcomes." @default.
- W4297989273 created "2022-10-01" @default.
- W4297989273 creator A5019676309 @default.
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- W4297989273 date "2022-11-01" @default.
- W4297989273 modified "2023-09-27" @default.
- W4297989273 title "Π-Net: A double-branch network framework for scanning coherent diffraction imaging" @default.
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- W4297989273 doi "https://doi.org/10.1016/j.dsp.2022.103766" @default.
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