用单张照片实现穿透厚散射介质的三维成像，无需事先了解介质特性。
Single picture single photon single pixel 3D imaging through unknown thick scattering medium
- 将散射介质视为透镜，利用焦点深度提取像素级深度信息。
- 成功重建5毫米和30毫米深处的目标，总介质厚度达60毫米。
- 无需介质先验、校准或参考测量，适合复杂环境下的隐蔽目标探测。
穿透厚散射介质成像面临重大挑战，尤其在三维应用中。本文提出一种新型单图三维成像方案，将散射介质视为透镜，捕捉包含不同深度隐藏物体信息的完整图像。通过结合聚焦深度与单像素成像中散射介质等效减薄效应，该方法实现了鲁棒的三维成像能力。我们开发了基于传统度量和深度学习的两种深度信息提取方法，可定位浅层与深层的正负物体。令人瞩目的是，该方案能同时重建被散射介质遮挡的多个目标。具体而言，成功实现了在总厚度为60毫米的介质中，对深度分别为5毫米和30毫米的目标进行三维重构，并有效区分三个不同深度的目标。值得注意的是，该方法无需任何关于散射介质的先验知识、侵入性操作、参考测量或校准。
原文摘要 · Abstract (English)
Imaging through thick scattering media presents significant challenges, particularly for three-dimensional (3D) applications. This manuscript demonstrates a novel scheme for single-image-enabled 3D imaging through such media, treating the scattering medium as a lens. This approach captures a comprehensive image containing information about objects hidden at various depths. By leveraging depth from focus and the reduced thickness of the scattering medium for single-pixel imaging, the proposed method ensures robust 3D imaging capabilities. We develop both traditional metric-based and deep learning-based methods to extract depth information for each pixel, allowing us to explore the locations of both positive and negative objects, whether shallow or deep. Remarkably, this scheme enables the simultaneous 3D reconstruction of targets concealed within the scattering medium. Specifically, we successfully reconstructed targets buried at depths of 5 mm and 30 mm within a total medium thickness of 60 mm. Additionally, we can effectively distinguish targets at three different depths. Notably, this scheme requires no prior knowledge of the scattering medium, no invasive procedures, reference measurements, or calibration.
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