Terahertz time-domain spectral image processing method based on blind deconvolution algorithm
-
摘要: 为了减少太赫兹波束衍射对成像造成的影响，以及提高太赫兹时域光谱的空间分辨率，采用了一种基于盲去卷积算法的图像处理方法。通过建立物理模型，利用图像灰度范围调整、盲去卷积、频率域滤波去噪等方法对太赫兹时域光谱进行处理，使用不同的指标比较处理前后所得到的图像。结果表明：该处理过程能够有效地提高太赫兹时域光谱的空间分辨率，对太赫兹成像分辨率的提高具有良好的效果。Abstract: In order to reduce the influence of terahertz beam diffraction on imaging and improve the spatial resolution of terahertz time-domain spectra, an image processing method based on blind deconvolution algorithm is adopted. By establishing a physical model, terahertz time-domain spectra are processed by means of image gray scale adjustment, blind deconvolution, frequency domain filtering and denoising. Finally, different evaluation indexes are used to compare the images before and after processing. The results show that the processing process can effectively improve the spatial resolution of terahertz time-domain spectrum, and has a good effect on the improvement of terahertz imaging resolution.
-
-
[1] 梁达川, 关松.太赫兹波无损检测技术及其应用[J].光电技术应用, 2018,33(6):5-12. [2] 董福俊. 太赫兹无损检测中缺陷探测的方法研究[D].武汉:华中科技大学, 2015. [3] 曹灿, 张朝晖, 赵小燕, 等.太赫兹时域光谱与频域光谱研究综述[J].光谱学与光谱分析,2018,38(26):88-99. [4] MITTLEMAN D M.Twenty years of terahertz imaging[J].Optics Express, 2018,26(8):9417-9431.
[5] 蒋林华, 王尉苏,童慧鑫.太赫兹成像技术在人体安检领域的研究进展[J].上海理工大学学报, 2019,41(1):46-51. [6] 林华. 无人机载太赫兹合成孔径雷达成像分析与仿真[J].太赫兹科学与电子信息学报, 2010,8(4):373-377. [7] AHI K, SHAHBAZMOHAMADI S, ASADIZANJANI N.Quality control and authentication of packaged integrated circuits using enhanced-spatial-resolution terahertz time-domain spectroscopy and imaging[J].Optics and Lasers in Engineering, 2018,104(S1):274-284.
[8] 宋哲宇. 太赫兹图像复原及检测技术研究[D].长春:长春理工大学, 2018. [9] LEVIN A, WEISS Y,DURAND F. Understanding blind deconvolution algorithms[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence,2011,33(12):2354-2367.
[10] BIGGS D S,ANDREWS M.Acceleration of iterative image restoration algorithms[J]. Applied Optics, 1997,36(8):1766-1775.
[11] 曹丽娜. 图像复原算法研究与设计[M].沈阳:沈阳理工大学, 2018. [12] JIANG Z,ZHANG X C. 2D measurement and spatio-temporal coupling of few cycle Thz pulses[J].Opt Express,1999,5(11):243-248.
[13] 吴章平, 刘本永.基于灰度平均梯度和粒子群优化的散焦图像模糊参数估计[J].计算机应用,2016,36(4):1111-1114.
计量
- 文章访问数: 0
- HTML全文浏览量: 0
- PDF下载量: 3
下载:
