基于SFA和GLCM的影像特征提取方法

针对遥感影像中同类样本差异性较大的缺点，提出一种基于SFA和灰度共生矩阵(GLCM)的遥感影像特征提取方法。对原始图像进行SFA变换，利用SFA的生物视觉特性消除图像中的同类差异性，对变换得到的图像进行GLCM计算，获得基于SFA和GLCM的新型特征。实验结果证明，SFA预处理能降低遥感影像的同类差异性，提高特征的可区分性，其效果优于传统的GLCM特征提取方法。

Image Feature Extraction Method Based on SFA and GLCM

As there are still many difference between the remote sensing image from the same class,this paper proposes a new method of extracting features based on Slow Feature Analysis（SFA） and Gray Level Co-occurrence Matrix（GLCM）.The image is first processed with SFA algorithm.It can eliminate the difference of the object from the same class as the biological characteristics of SFA.Then the GLCM feature is extracted from the SFA data.Results indicate that with the preprocessing of SFA,it can effectively reduce the diversity of samples from the same class and increase the distinguishability of the feature,the method is more effective and competitive than the conventional GLCM feature extraction method.