Vilaseca Meritxell, Pujol Jaume, Arjona Montserrat
Departament d'Optica i Optometria, Centre de Desenvolupament de Sensors, Intnrumentació i Sistemas (CD6), Universitat Politècnica de Catalunya, Rambla Sant Nebridi 10, 08222 Terrassa, Spain.
Appl Opt. 2003 Apr 1;42(10):1788-97. doi: 10.1364/ao.42.001788.
Our aim is to develop a method for obtaining the reflectance spectra of samples in the near-infrared (NIR) region (800-1,000 nm) by using a small number of measurements performed with a conventional CCD camera (multispectral imaging). We experimentally determined the spectral sensitivity of the CCD camera in the NIR range, used a method based on principal component analysis to reconstruct the spectral reflectance of the samples, and analyzed the number and shape of the filters that need tobe used to apply this method. Finally we obtained the reflectance spectra of a set of 30 spectral curves by numerical simulation. The small amount of errors in the spectral reconstruction shows the potential of this method for reconstructing spectral reflectances in the NIR range.
我们的目标是开发一种方法，通过使用传统电荷耦合器件（CCD）相机进行少量测量（多光谱成像）来获取样品在近红外（NIR）区域（800 - 1000 nm）的反射光谱。我们通过实验确定了CCD相机在近红外范围内的光谱灵敏度，采用基于主成分分析的方法重建样品的光谱反射率，并分析了应用该方法所需使用的滤光片数量和形状。最后，我们通过数值模拟获得了一组30条光谱曲线的反射光谱。光谱重建中的少量误差表明了该方法在重建近红外范围内光谱反射率方面的潜力。
