Bi-dimensional empirical mode decomposition based fringe-like pattern suppression in polarization interference imaging spectrometer
Bi-dimensional empirical mode decomposition based fringe-like pattern suppression in polarization interference imaging spectrometer
复制标题
偏振干涉成像光谱仪中基于二维经验模态分解的条纹状图案抑制
DOI：
10.1016/j.optcom.2017.09.071
复制
发表时间：
2018
影响因子：
2.4
通讯作者：
Zhang Sheqi
中科院分区：
文献类型：
--
作者：
Ren Wenyi;Cao Qizhi;Wu Dan;Jiang Jiangang;Yang Guoan;Xie Yingge;Wang Guodong;Zhang Sheqi
干涉成像光谱仪在红光和近红外波段出现的条纹状图样（FP）困扰着许多使用干涉成像光谱仪的观测者。针对偏振干涉成像光谱仪中非线性FP的抑制问题，提出了一种基于二维经验模态分解的自适应方法。FP和校正后的干涉图得到了有效的分离。同时，CCD拼接引入的条纹也得到了抑制。实现了干涉图的非线性背景去除和光谱畸变校正。它为我们提供了一种无需先验实验数据和知识的自适应抑制非线性FP的方法。该方法在傅里叶变换光谱学、全息成像、莫尔条纹光学测量等领域具有广阔的应用前景。
Many observers using interference imaging spectrometer were plagued by the fringe-like pattern(FP) that occurs for optical wavelengths in red and near-infrared region. It brings us more difficulties in the data processing such as the spectrum calibration, information retrieval, and so on. An adaptive method based on the bi-dimensional empirical mode decomposition was developed to suppress the nonlinear FP in polarization interference imaging spectrometer. The FP and corrected interferogram were separated effectively. Meanwhile, the stripes introduced by CCD mosaic was suppressed. The nonlinear interferogram background removal and the spectrum distortion correction were implemented as well. It provides us an alternative method to adaptively suppress the nonlinear FP without prior experimental data and knowledge. This approach potentially is a powerful tool in the fields of Fourier transform spectroscopy, holographic imaging, optical measurement based on moire fringe, etc.