一种测量商业数码相机光谱响应的方法

在颜色科学领域，数码相机被广泛地用于颜色测量、多光谱图像的颜色复制、光谱重建和产品检测、分类等场合。其中数码相机的光电特性是一个重要参数。文章介绍了一种通过数码相机的数字响应RGB和光谱能量分布测量商业数码相机相对光谱响应的方法。实验中采用了Sony DSC—F505V数码相机和PhotoResearch 1980B辐射分光光度计。实验发现该数码相机相对光谱响应曲线与CIE1931标准观察者颜色匹配函数相似。说明目前数码相机的滤色片阵列在设计上有了较大的改进，尽量模拟标准观察者函数，以利于真实复制场景的颜色。

A Method of Estimating Spectral Response of Commercial Digital Still Camera

In color science field,digital still cameras have be widely used for color measurement,multispectral imaging color reproduction,spectral reconstruction and production classifying etc.The photoelectric properties are an important parameter.In this paper we introduce a method for estimating commercial still camera relative spectral response from spectral power input and camera response data.A Sony DSC-F505V still camera and PhotoResearch 1980B spectroradiometer was adopted in experiment.The possibility was explored that commerce still camera use for color science studying.We have found that spectral response curve of camera is similar with CIE standard colorimetric observer matching functions.It illuminate that the color filter array(CFA) of camera had most improved on design.It is advantage that the color of scene were faithfully reproduced,if spectral response of camera can simulate CIE standard colorimetric observer.