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《Acta Optica Sinica》 2016-02
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Spectrum Recovery Method for Hyperspectral Imaging Based on Symmetric Wedgy Interferometric Cavity

Bai Caixun;Li Jianxin;Meng Xin;Zhou Jianqiang;Shen Yan;Wang Hao;School of Electronic and Optical Engineering, Nanjing University of Science and Technology;  
Interferometric hyperspectral imaging can obtain the spatial information and spectral characteristics of the target. It plays an important role in many fields such as biomedicine,material analysis,food safety and cultural relic archaeology. The interferometric hyperspectral imaging based on symmetric wedgy cavity provides a new method for spectral detection. By analyzing the interference principle and working mode,the spectrum recovery method is studied. In order to eliminate the effect of image-plane macula on spectrum recovery,an interferogram correction algorithm is proposed. A fast subpixel image registration algorithm based on local phase correlation can realize accurate extraction of the interference data in holistic push-broom mode. A spectrum recovery method based on matrix inversion is presented by discussing the systemic spectral transfer matrix. A prototype is developed for a spectral imaging experiment and the preliminary recovered results are obtained with the proposed spectrum recovery method.
【Fund】: 国家自然科学基金(61475072 61205016 U1231112);; 教育部博士点基金(20123219120021 20133219110008)
【CateGory Index】: TP391.41
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