一种新的偏振光谱二向反射测量方法

A New Measurement Method of Polarimetric Spectral Bidirectional Reflectance Distribution Function

针对分光辐射度计和CCD相机各自在偏振BRDF实验测量中的不足,提出了一种新的实验方案.分别利用分光辐射度计和带液晶可调滤光片的CCD相机测量偏振光谱BRDF数据,然后利用分光辐射度计的数据来反演图像数据.实验结果表明,反演后的偏振光谱BRDF数据不但准确地描述其波谱特征和材料的均匀性,而且能反映材料的颜色、粗糙度、导电性、纹理和边缘等特征.

As the shortage of spectrophotometer and CCD camera in the experiment of polarimetric BRDF,a new experiment methodwas proposed. Polarimetric spectral BRDF was measured using spectrophotometer and CCD camera with liquid crystal tunable filter（LCTF） seperatively, then imagery data retrieval was carried out by using spectrophotometer data. The experiment results indicate that retrieved polarimetric BRDF data charcaterises its spectral variability and the homogeneousness of material, and describes the color,roughness,electrical conductivity,texture,edge of the material and so on.