The Improved Design of Encoding Mask and the Correcting Method for Recovered Spectral Images in Hadamard Transform Spectral Imager Based on DMD
XU Jun1, XIE Cheng-wang2, LIU Hai-wen1, LIU Qiang3, LI Bin-cheng4
1. School of Information Engineering, East China Jiaotong University, Nanchang 330013, China 2. School of Software, East China Jiaotong University, Nanchang 330013, China 3. Key Laboratory of Spectral Imaging Technique，Xi’an Institute of Optics and Precision Mechanics，Chinese Academy of Sciences， Xi’an 710119，China 4. Key Laboratory of Beam Control, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
Abstract：A novel type of DMD-based Hadamard transform spectral imager is introduced. Taking the 7-order S-matrix as an example for discussion, the present paper develops an improved design of Hadamard encoding mask, which makes the dispersed spectrum of all pixels to be encoded by seven elements strictly. A correcting method for the recovered spectral images is proposed, and eventually 6 high-quality spectral images are obtained when Hadamard transform spectral imager operates based on 7-order S-matrix. Similarly, if the spectral imager operates based on n-order S-matrix, n-1 spectral images can be obtained. The experimental results show that the improved design and the correction method are feasible and effective.
徐 君1，谢承旺2，刘海文1，刘 强3，李斌成4 . 基于DMD的Hadamard编码模板改进设计与光谱数据修正方法研究 [J]. 光谱学与光谱分析, 2013, 33(05): 1419-1423.
XU Jun1, XIE Cheng-wang2, LIU Hai-wen1, LIU Qiang3, LI Bin-cheng4 . The Improved Design of Encoding Mask and the Correcting Method for Recovered Spectral Images in Hadamard Transform Spectral Imager Based on DMD . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(05): 1419-1423.
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