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10 October 2020 Restore multiple particles by using short-path U-net model with average pooling based on digital holography
Wei-Na Li, Ping Su, Jianshe Ma
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Proceedings Volume 11551, Holography, Diffractive Optics, and Applications X; 1155108 (2020) https://doi.org/10.1117/12.2573650
Event: SPIE/COS Photonics Asia, 2020, Online Only
Abstract
We propose a short-path U-net model with average pooling in order to restore in-focus images of multiple transparent particles at ground truth z positions and simultaneously remove their zero-order images, conjugate images, the defocused images of the other particles, and the noise induced by the optical system in a volume. Subsequently, we obtain the lateral location and diameter of each particle in a fast way based on the nature of the particles’ shape; eventually acquire the particle density in the captured volume. The experimental results demonstrate that all sized particles including small– sized and relatively large-sized particles can be restored well by a short-path U-net model, and average pooling performs well when dealing with piece-wise pattern. The proposed scheme can distinguish as many particles as possible in a small volume with small reconstruction depth spacing, such as 50 μm.
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Wei-Na Li, Ping Su, and Jianshe Ma "Restore multiple particles by using short-path U-net model with average pooling based on digital holography", Proc. SPIE 11551, Holography, Diffractive Optics, and Applications X, 1155108 (10 October 2020); https://doi.org/10.1117/12.2573650
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KEYWORDS
Particles
Digital holography
Data modeling
Mie scattering
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