基于特征手的掌纹特征提取算法是根据类内类间距离准则而设计的特征提取算法。
Eigenpalms based feature extraction is designed according to the rule of in-class distance and between-class distance.
并可检索到具有一定相似性的图像，且类间与类内分形码距离约相差8，类内距离远小于类间距离。
The similarity images can be retrieved and the difference between inter-class and inner-class distance is about 8. The inner-class distance is much smaller than the inter-class distance.
在聚类的过程中簇间距离计算的准确性是影响算法性能的重要因素。
The cluster distance computing method is the key issue affecting the performance of hierarchical clustering algorithm.
据此，本文尝试提出一种简单的加入空间关系的遥感图像分类方法，即，先准确识别出海水类，然后统计非海水类的每一个像元到最近海水的空间距离。
The coastal zone is close to ocean water which can be recognized easily by its significant spectral difference from land objects in the remotely sensed images.
据此，本文尝试提出一种简单的加入空间关系的遥感图像分类方法，即，先准确识别出海水类，然后统计非海水类的每一个像元到最近海水的空间距离。
The coastal zone is close to ocean water which can be recognized easily by its significant spectral difference from land objects in the remotely sensed images.
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