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Scannerless non-line-of-sight three dimensional imaging with a 32x32 SPAD array

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posted on 2023-11-30, 20:56 authored by Chenfei Jin, Meng Tang, Legeng Jia, Xiaorui Tian, Jie Yang, Kai Qiao, Siqi Zhang
We develop a scannerless non-line-of-sight three dimensional imaging system based on a commercial 32x32 SPAD camera combined with a 70 ps pulsed laser. In our experiment, 1024 time histograms can be achieved synchronously in 3s with an average time resolution of about 165 ps. The result with filtered back projection shows a discernable reconstruction while the result using virtual wave field demonstrates a better quality similar to the ones created by earlier scanning imaging systems with single pixel SPAD. Comparatively, our system has large potential advantages in frame frequency, power requirements, compactness and robustness. The research results will pave a path for scannerless non-line-of-sight three dimensional imaging application.

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