光子学报, 2013, 42 (8): 912, 网络出版: 2013-09-25   

压缩采样光谱调制技术研究

Compressive Sampling Spectral Modulated Technique
作者单位
中国科学院西安光学精密机械研究所 光谱成像技术实验室,西安 710119
摘要
为了避免光谱成像系统的时间损失,提高系统光通量,提出一种压缩采样光谱调制技术,搭建了基于数字微镜器件的压缩采样多光谱成像系统.该技术基于压缩采样理论,采用编码孔径光学系统以低于奈奎斯特频率对光信息进行采样,大幅度地减少了光谱数据量.实验中根据探测器得到的隐含光谱信息的二维图像,采用双收缩快速迭代算法重建612 nm激光和彩条布的数据立方体,结果表明:压缩采样多光谱成像系统不仅具有高光通量和高分辨率等特点,并在获取谱信息的同时对其进行瞬时压缩,压缩比可达31∶1.
Abstract
The compressive sampling spectral modulated technique is developed in order to avoid time penalty and promote throughput of spectral imaging system, and a digitalmicromirrordevice based compressive sampling multispectral imaging system is designed. In the technique based compressive sampling spectral information is sampled below Nyquistcriterion with coded aperture to reduce spectral data greatly. In the experiment, the cubic spatial/spectral data cubes of the 612 nm laser and colored striped fabric are reconstructed from 2Dimension images obtained from detector that contain spectral information using double shrinkage fast iterative algorithm. The results indicate that a digitalmicromirrordevice based compressive sampling multispectral imaging system has images with highthroughput and high resolution, can compress the spectral simultaneously, and the compression ratio can reach 31∶1.
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孙朗, 胡炳樑, 王爽, 闫鹏, 冯玉涛, 孙念. 压缩采样光谱调制技术研究[J]. 光子学报, 2013, 42(8): 912. SUN Lang, HU Bingliang, WANG Shuang, YAN Pen, FENG Yutao, SUN Nian. Compressive Sampling Spectral Modulated Technique[J]. ACTA PHOTONICA SINICA, 2013, 42(8): 912.

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