Using the difference of the visible light and near infrared band reflectance,the water bodies can be extracted from remote sensing data. 利用可見光和近紅外波段的地物光譜反射率差異可以從遙感數據中提取水體。
Among the color correction methods based on spectral reflectance reproduction, the finite dimension model is an effective way to condense spectral reflectance. 在基于光譜反射率還原的顏色校正方法中，有限維模型是光譜反射率降維的有效方法。
The spectr al reflectance of each test specimen is measured in situ before and after exp osures. 在輻照前后對每一個試樣的光譜反射系數進行了原位測量。
