基于mRMR特征优选算法的多光谱遥感影像分类效率精度分析

程希萌, 沈占锋, 邢廷炎, 夏列钢, 吴田军

Efficiency and Accuracy Analysis of Multispectral Image Classification Based on mRMR Feature Selection Method

CHENG Ximeng,SHEN Zhanfeng,XING Tingyan,XIA Liegang,WU Tianjun

表5 基于不同特征优选算法分类效率精度对比

Tab. 5 Comparison of the efficiency and accuracy between different feature selection methods

方法组合 分类时间/s 总体分类精度/(%) Kappa系数 C5.0 1.349 83.5 0.747 C5.0+mRMR 1.073 82.7 0.734 C5.0+PCA 0.924 78.0 0.658 KNN 276.014 80.5 0.696 KNN+mRMR 161.547 82.3 0.725 KNN+PCA 88.303 80.0 0.689