标题： 基于散射的点扩散函数的快照5D和模式可切换无透镜成像 显示英文标题

标题： Exploiting scattering-based point spread functions for snapshot 5D and modality-switchable lensless imaging

摘要： 快照多维成像通过在单次拍摄中同时捕获空间、光谱、偏振和其他信息，为传统低维成像技术提供了一个有前景的替代方案，从而提高了成像速度和采集效率。 然而，现有的快照多维成像系统通常受到其体积大、复杂度高和成本高的限制，这制约了它们的实际应用。 在本工作中，我们提出了一种紧凑的无透镜散射相机用于快照多维成像（Diffuser-mCam），它可以在非相干照明下从单次拍摄的类似斑点的测量中重建五维（5-D）图像。 通过同时利用散射介质和空间复用策略来提取高维光学特征，我们展示了所需光场的多维数据（2D强度分布、光谱、偏振、时间）可以通过散射器编码为一个快照斑点模式，并随后以2.5%的采样率使用压缩感知算法进行解码，消除了多扫描过程的需要。 我们进一步证明，我们的方法可以灵活地在5D和选择性减少维度的成像之间切换，提供了一种有效降低计算资源需求的方法。 我们的工作为快照多维成像提供了一个紧凑、经济且多功能的框架，并为在医学成像、遥感和自主系统等领域的新型成像系统设计开辟了新的机会。 显示英文摘要

摘要： Snapshot multi-dimensional imaging offers a promising alternative to traditional low-dimensional imaging techniques by enabling the simultaneous capture of spatial, spectral, polarization, and other information in a single shot for improved imaging speed and acquisition efficiency. However, existing snapshot multi-dimensional imaging systems are often hindered by their large size, complexity, and high cost, which constrain their practical applicability. In this work, we propose a compact lensless diffuser camera for snapshot multi-dimensional imaging (Diffuser-mCam), which can reconstruct five-dimensional (5-D) images from a single-shot 2D recording of speckle-like measurement under incoherent illumination. By employing both the scattering medium and the space-division multiplexing strategy to extract high-dimensional optical features, we show that the multi-dimensional data (2D intensity distribution, spectral, polarization, time) of the desired light field can be encoded into a snapshot speckle-like pattern via a diffuser, and subsequently decoded using a compressed sensing algorithm at the sampling rate of 2.5%, eliminating the need for multi-scanning processes. We further demonstrate that our method can be flexibly switched between 5D and selectively reduced-dimensional imaging, providing an efficient way of reducing computational resource demands. Our work presents a compact, cost-effective, and versatile framework for snapshot multi-dimensional imaging and opens up new opportunities for the design of novel imaging systems for applications in areas such as medical imaging, remote sensing, and autonomous systems.