López-Alvarez Miguel A, Hernández-Andrés Javier, Romero Javier
Hewlett-Packard Spain, Large Format Printing Division, 08174 Sant Cugat del Vallès, Barcelona, Spain.
Appl Opt. 2008 Aug 20;47(24):4381-90. doi: 10.1364/ao.47.004381.
In a previous work [J. Opt. Soc. Am. A24, 942 (2007)JOAOD60740-323210.1364/JOSAA.24.000942] we made a complete theoretical and computational study of the influence of several parameters on the behavior of a planned multispectral system for imaging skylight, including the number of sensors and the spectral estimation algorithm. Here we follow up this study by using all the information obtained in the computational simulations to implement a real multispectral imaging system based on a monochrome CCD camera and a liquid-crystal tunable filter (LCTF). We were able to construct the optimum Gaussian sensors found in the simulations by adjusting the exposure times of some of the transmittance modes of the LCTF, hence obtaining really accurate spectral estimations of skylight with only a few optimum sensors.
在之前的一项工作中[《美国光学学会志A》24, 942 (2007)；JOAOD60740 - 3232；10.1364/JOSAA.24.000942]，我们对几个参数对一个计划中的用于拍摄天光的多光谱系统行为的影响进行了全面的理论和计算研究，包括传感器数量和光谱估计算法。在此，我们通过利用计算模拟中获得的所有信息，以基于单色CCD相机和液晶可调谐滤波器（LCTF）实现一个实际的多光谱成像系统来跟进这项研究。我们能够通过调整LCTF某些透射模式的曝光时间来构建模拟中找到的最优高斯传感器，从而仅用几个最优传感器就能获得非常精确的天光光谱估计。
