光学学报, 2019, 39 (4): 0407001, 网络出版: 2019-05-10
基于分块压缩感知理论的太赫兹波宽光束成像技术 下载: 1103次
Terahertz Wave Wide-Beam Imaging Technology Based on Block Compressive Sensing Theory
成像系统 太赫兹成像 分块压缩感知 矩阵调制 采样技术 imaging systems terahertz imaging block compressive sensing matrix modulation sampling technology
摘要
提出了一种基于分块压缩感知理论的太赫兹波宽光束成像技术。模拟结果显示,该技术可以实现高分辨率、高质量的快速成像。采用连续太赫兹波CO2气体激光器光源,基于宽光束矩阵调制采样,对不同物体进行了分块压缩感知成像,并与基于单像素随机采样的分块压缩感知方法进行了对比。结果表明,所提技术具有更高的成像稳定性,且其采样过程对不同成像物体的普适性更好。
Abstract
A terahertz wave wide-beam imaging technology based on the block compressive sensing theory is proposed. Simulation results show that this technology can be used to achieve the rapid imaging with high resolution and high quality. With the CO2 gas laser light source of continuous terahertz wave and based on the wide-beam matrix modulation sampling, the different objects are imaged by block compressive sensing. The results are compared with that by the block compressive sensing method based on single-pixel random sampling. It is shown that the proposed technology has a higher imaging stability. Moreover, the sampling process is more universal for different imaging objects.
王与烨, 任宇琛, 陈霖宇, 李长昭, 张超, 徐德刚, 姚建铨. 基于分块压缩感知理论的太赫兹波宽光束成像技术[J]. 光学学报, 2019, 39(4): 0407001. Yuye Wang, Yuchen Ren, Linyu Chen, Changzhao Li, Chao Zhang, Degang Xu, Jianquan Yao. Terahertz Wave Wide-Beam Imaging Technology Based on Block Compressive Sensing Theory[J]. Acta Optica Sinica, 2019, 39(4): 0407001.