Joshi Narmada, Tiwari Vipin, Tamm Aile, Rosen Joseph, Anand Vijayakumar
Institute of Physics, University of Tartu, W. Ostwaldi 1, 50411, Tartu, Estonia.
School of Electrical and Computer Engineering, Ben Gurion University of the Negev, P.O. Box 653, 8410501, Beer-Sheva, Israel.
Sci Rep. 2025 Jul 2;15(1):23164. doi: 10.1038/s41598-025-04657-2.
Coded aperture imaging (CAI) is a well-established indirect imaging technique consisting of two steps, namely optical recording and computational reconstruction. In the recent years, CAI technique has been extended to image along 3D space and also the spectrum with a single camera shot. In this study, we developed CAI for 3D imaging along 2D space and polarization using dual orthogonal polarization phase-modulation (DOPP) technique. DOPP-CAI has been demonstrated for 3D imaging with only one birefringent optical modulator and without any polarization sensitive image sensors. The theory, simulation and proof-of-concept experimental results are presented. The results demonstrate a one-to-one unique intensity-polarization mapping owing to a significant polarization discriminated blur in CAI. We believe that the developed DOPP-CAI can benefit multimodal imaging, birefringent imaging, holography and microscopy.
编码孔径成像（CAI）是一种成熟的间接成像技术，由光学记录和计算重建两个步骤组成。近年来，CAI技术已扩展到沿三维空间成像，并且可以通过单次相机拍摄实现光谱成像。在本研究中，我们利用双正交偏振相位调制（DOPP）技术开发了用于沿二维空间和偏振进行三维成像的CAI。DOPP-CAI已被证明仅使用一个双折射光学调制器且无需任何偏振敏感图像传感器即可进行三维成像。本文给出了理论、模拟和概念验证实验结果。结果表明，由于CAI中存在显著的偏振分辨模糊，实现了强度-偏振的一一对应唯一映射。我们相信，所开发的DOPP-CAI可应用于多模态成像、双折射成像、全息术和显微镜技术。
