The result fo Principal Component Analysis (PCA) shows that the vegetative characters are the major characters in morphological classification of C.
主成分分析结果表明，营养器官是狗牙根形态分类的重要指标。
The effect of C is large for aerial image segmentation and classification.
航空影像纹理分类和分割对常数C敏感；
Selecting train sample on the basis of fuzzy C-mean clustering decreased subjective factor affecting selecting train sample, so higher classification accuracy can be achieved.
同时，在模糊C-均值聚类基础上选择训练样本比起直接基于真实地物图选择，减少了主观因素对训练样本选择的影响，因此取得了更高的分类精度。
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