Reflective Single-Pixel Terahertz Imaging Based on Compressed Sensing
Reflective Single-Pixel Terahertz Imaging Based on Compressed Sensing
复制标题
基于压缩感知的反射式单像素太赫兹成像
DOI：
10.1109/tthz.2020.2982350
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发表时间：
2020-09-01
影响因子：
3.2
通讯作者：
Zhang, Yan
中科院分区：
文献类型：
--
作者：
Lu, Yue;Wang, Xin-Ke;Zhang, Yan
单像素太赫兹成像的研究为太赫兹成像技术的发展开辟了新的研究方向。在这项工作中，我们开发了一种基于光诱导动态掩模的反射式单像素THz成像系统。通过结合压缩传感和逆菲涅耳衍射算法，精确地重建了反射太赫兹光谱图像，并清晰地观察到了样品的形貌。充分证明了THz成像系统的三个应用潜力，包括多界面样品的飞行时间测量，隐藏物体的非侵入性检测，以及不同化学物质的光谱识别。反射式测量模式有效地提高了单像素THz成像的实用性。
The investigation of single-pixel terahertz (THz) imaging opens up a new research direction for the development of THz imaging technology. In this work, we exploit a reflective single-pixel THz imaging system based on photoinduced dynamic masks. By combining the compressed sensing and inverse Fresnel diffraction algorithms, a reflective THz spectral image is accurately reconstructed and the morphology of a sample is clearly observed. Three application potentials of the THz imaging system are fully proved, including time-of-flight measurement of a sample with multiple interfaces, noninvasive testing of a hidden object, and spectral identification of different chemical substances. The reflection-type measurement mode effectively improves the practicability of single-pixel THz imaging.