云类 meaning in English

cloud genus

In order to avoid the case which different clouds have same dbds and to improve abilities of fog separating using dbd , a modified dbd ( mdbd ) based on average gray weighting is proposed and a novel algorithm is developed for mdbds and spectral features in combination to distinguish fog from cloud with fairly good results achieved in our experiments
针对差值盒维数在表现云雾纹理特征和云雾分离方面存在的问题，提出基于样本图像灰度均值的加权盒维数算法，以改变出现灰值差异较大的不同云类具有相同盒维数的情况，并与云雾的光谱特征结合，实现雾与云的识别与分离，在实际应用中取得了较好的效果。