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
压缩采样光谱调制技术 压缩采样 编码孔径 双收缩快速迭代算法 Compressive sampling modulated technique Compressive sampling Coded aperture Double shrinkage fast iterative algorithm
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 digitalmicromirrordevice based compressive sampling multispectral imaging system is designed. In the technique based compressive sampling spectral information is sampled below Nyquistcriterion 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 2Dimension images obtained from detector that contain spectral information using double shrinkage fast iterative algorithm. The results indicate that a digitalmicromirrordevice based compressive sampling multispectral imaging system has images with highthroughput and high resolution, can compress the spectral simultaneously, and the compression ratio can reach 31∶1.
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 Bingliang, WANG Shuang, YAN Pen, FENG Yutao, SUN Nian. Compressive Sampling Spectral Modulated Technique[J]. ACTA PHOTONICA SINICA, 2013, 42(8): 912.