WSI: radiances from red image for three patches (avg and SD) - wsipatchsummary

The whole-sky imager (WSI) is an automated imager used for assessing and documenting cloud fields and cloud field dynamics. The WSI is a ground-based electronic imaging system that monitors the upper hemisphere. It is a passive, i.e., non-emissive, system that acquires images of the sky dome through three spectral filters (neutral, red, and blue). \n \nFrom these sky images, we can assess the presence, distribution, shape, and radiance of clouds over the entire sky using automated cloud decision algorithms and related processing. The current WSI model (EO System 6) is capable of image acquisition under daylight, moonlight, and starlight conditions.

全天空成像仪（whole-sky imager, WSI）是一款用于评估与记录云系及其动态变化的自动化成像设备。该设备属于地基电子成像系统，可对上半球空域进行监测，为无源（非主动发射型）系统，通过中性、红色与蓝色三种光谱滤光片采集天穹的图像。

借助这些天空图像，我们可通过自动化云判定算法及相关处理流程，对全天空范围内云的存在情况、分布特征、形态结构与辐射亮度进行评估。当前型号为EO System 6的全天空成像仪，能够在日光、月光及星光环境下完成图像采集。