Spectral matching imager using correlation image sensor and variable-wavelength illumination
Spectral matching imager using correlation image sensor and variable-wavelength illumination
复制标题
使用相关图像传感器和可变波长照明的光谱匹配成像仪
DOI：
10.1117/12.463414
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
S. Ando
中科院分区：
文献类型：
--
作者：
A. Kimachi;Toshihide Imaizumi;A. Kato;S. Ando
本文提出了一种光谱选择性成像系统，称为“光谱匹配成像仪”，它由可变波长单色光源和相关图像传感器组成。可变波长单色光源照亮场景，同时随时间扫描其波长，以沿时间轴沿着扩展对象的光谱反射率/透射率函数。在每个像素处，相关性图像传感器在时域中产生扩展谱函数与参考谱函数之间的相关性。因此，建立良好光谱匹配的像素在输出图像中具有大的值。光谱匹配成像器满足（1）高光谱分辨率，（2）有效的数据压缩，和（3）对任意滤光器特性的可调谐性。实验结果表明，成功地检测对象具有详细的窄带结构，如玻璃片掺杂稀土元素。
This paper proposes a spectrally selective imaging system called 'spectral matching imager,' which consists of the variable wavelength monochrome light source and the correlation image sensor. The variable wavelength monochrome light source illuminates the scene while sweeping its wavelength with time to expand the spectral reflectance/transmittance function of objects along the time axis. At each pixel, the correlation image sensor produces the correlation in the time domain between the expanded spectral function and a reference spectral function. Consequently, pixels that establish a good spectral match have large values in the output image. The spectral matching imager satisfies (1) high spectral resolution, (2) efficient data compression, and (3) tunability to arbitrary optical filter characteristics. Experimental results demonstrate successful detection of objects having detailed narrowband structures, such as glass pieces doped with rare-earth elements.