光子学报, 2019, 48 (6): 0630002, 网络出版: 2019-07-10
哈达码变换光谱成像仪数据复原算法
Spectral Data Reconstruction Algorithm of Hadamard Transform Spectral Imager
光谱成像 哈达码变换 编码模板 光谱混叠 数据复原 Spectral imaging Hadamard transform Encoding mask Spectral aliasing Data reconstruction
摘要
从哈达码变换光谱成像仪成像原理出发, 对其光谱成像过程进行数学建模, 分析了哈达码模板调制引起光谱信息混叠和空间信息混叠的原因, 提出了一种根据光谱偏移量去除混叠的算法.采用自行研制的哈达码变换光谱成像仪进行了目标数据采集, 用提出的去混叠算法对目标数据进行复原, 得到目标的三维数据立方体, 有效去除了空间信息混叠和光谱信息混叠, 验证了算法的正确性.
Abstract
Based on the principle of hadamard transform spectral imager, through the mathematical modeling of its spectral imaging process, the spectral information aliasing and spatial information aliasing caused by hadamard code mask modulation are deeply analyzed, and an algorithm is proposed to remove aliasing according to the spectral offset.The target data is collected by the self-developed hadamard transform spectral imager. Data cube reconstruction is accomplished by the proposed algorithm of removing aliasing. Finally, the 3D data cube is restored successfully. The spatial information aliasing and spectral information aliasing are effectively removed, and the correctness of the proposed algorithm is verified.
李芸, 胡炳樑, 高晓惠, 孙鑫, 武登山, 闫鹏, 张小荣. 哈达码变换光谱成像仪数据复原算法[J]. 光子学报, 2019, 48(6): 0630002. LI Yun, HU Bing-liang, GAO Xiao-hui, SUN Xin, WU Deng-shan, YAN Peng, ZHANG Xiao-rong. Spectral Data Reconstruction Algorithm of Hadamard Transform Spectral Imager[J]. ACTA PHOTONICA SINICA, 2019, 48(6): 0630002.
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