Geometric super-resolution on push-broom hyperspectral imaging for plasma optical emission spectroscopy
Geometric super-resolution on push-broom hyperspectral imaging for plasma optical emission spectroscopy
复制标题
等离子体发射光谱推扫式高光谱成像的几何超分辨率
DOI：
10.1039/c8ja00235e
复制
发表时间：
2018
影响因子：
3.4
通讯作者：
Gamez, Gerardo
中科院分区：
文献类型：
--
作者：
Shi, Songyue;Gong, Xiaoxia;Mu, Yan;Finch, Kevin;Gamez, Gerardo
推扫式高光谱成像（Pb-HSI）是一种强大的技术，用于同时获得光谱信息沿着空间信息，用于从遥感到化学成像的各种应用。空间分辨率的提高在许多情况下是有益的;然而，典型的解决方案受到几何范围的限制、降低的光通量或减小的视场（FOV）。与典型的成像方法相比，亚像素移位（SPS）从以较高采样率获取的低分辨率图像的去卷积获取更高分辨率的图像。此外，由于其扫描性质，SPS特别适合Pb-HSI。在这项研究中，SPS方法的开发和实施的Pb-HSI系统的等离子体发射光谱。初步结果表明，在最终的SPS Pb-HSI图像中产生了周期性的去卷积误差。周期性误差被追溯到原始/卷积SPS数据中存在的随机噪声，并且其频率显示与所获取的子像素样本的数量成反比关系。计算机建模的数据允许研究改变原始/卷积SPS数据中的相对标准偏差（RSD）对最终重建的SPS图像的影响以及噪声滤波的优化。采用优化的SPS Pb-HSI技术，获得了大气压微毛细管介质阻挡放电（μDBD）的视距积分光发射图。所选择的感兴趣的等离子体种类（He、I、N2、N2+和O）产生对潜在机制的一些了解。这里开发的SPS Pb-HSI技术将允许在许多应用中实现几何超分辨率，例如，它将用于从Abel反演协议中提取径向分辨信息，其中由于分辨率/数据点的增加，预计将改进拟合。
Push-broom hyperspectral imaging (Pb-HSI) is a powerful technique for obtaining the spectral information along with the spatial information simultaneously for various applications, from remote sensing to chemical imaging. Spatial resolution improvement is beneficial in many instances; however, typical solutions suffer from the limitation of geometric extent, lowered light throughput, or reduced field-of-view (FOV). Sub-pixel shifting (SPS) acquires higher-resolution images, compared to typical imaging approaches, from the deconvolution of low-resolution images acquired with a higher sampling rate. Furthermore, SPS is particularly suited for Pb-HSI due to its scanning nature. In this study, an SPS approach is developed and implemented on a Pb-HSI system for plasma optical emission spectroscopy. The preliminary results showed that a periodic deconvolution error was generated in the final SPS Pb-HSI images. The periodic error was traced back to random noise present in the raw/convoluted SPS data and its frequency displays an inverse relationship with the number of sub-pixel samples acquired. Computer modelled data allows studying the effect of varying the relative standard deviation (RSD) in the raw/convoluted SPS data on the final reconstructed SPS images and optimization of noise filtering. The optimized SPS Pb-HSI technique was used to acquire the line-of-sight integrated optical emission maps from an atmospheric pressure micro-capillary dielectric barrier discharge (μDBD). The selected plasma species of interest (He, I, N2, N2+, and O) yield some insight into the underlying mechanisms. The SPS Pb-HSI technique developed here will allow implementing geometric super-resolution in many applications, for example, it will be used for extracting radially resolved information from Abel's inversion protocols, where improved fitting is expected due to the increase in resolution/data points.
DOI：
--
发表时间：
2006
期刊：
--
影响因子：
--
作者：
Iroon Polytechniou-
通讯作者：
Iroon Polytechniou-
影响因子：
3.4
作者：
Usala, John D.;Maag, Adrian;Gamez, Gerardo
通讯作者：
Gamez, Gerardo