cirrus cloud

CIRRUS: A high-altitude cloud composed of narrow bands or patches of thin, generally white fleecy parts.

卷云: 一种高空云,由狭条状或小块状的薄絮般的, 通常是白色的部分组成.

Combined the fractal dimension with the 2 order statistical features of Gray Gradient Co occurence Matrix ( GGCM) of 4 kinds of basic clouds pictures ( Cirrus, Cumulus, Cumulonimbus and Layer Cloud), the clouds are classified and recognized.

将4种基本云类（卷云、积雨云、积云和层云）的分数维和灰度梯度共生矩阵（GGCM）的二次统计特征结合起来，对云类进行分类与识别。

Secondly, the research data, which use the cloud classification productions of National Satellite Meteorological Center as types' labels, are divided into Land, Mixed cloud, Altostratus or Nimbostratus, Cirrostratus, Cirrus Spissatus, Cumulonimbus and Stratocumulus or Altocumulus.

第二，每个数据的类别标签参考国家卫星气象中心的云分类产品结果，将实验数据划分为地表、混合像元、高层云或雨层云、卷层云、密卷云、积雨云以及层积云或高积云7类。