We propose a multistage SAR target recognition process based on target detection, target segmentation, target aspect estimation and invariantfeatureextraction.
提出一种以目标检测、目标分割、目标方位角估计和目标不变性特征提取为线索的SAR目标识别框架。
2
The SIFT algorithm is proposed in this study is a featureextraction algorithm based on local invariant.
本文研究的SIFT算法正是一种基于局部不变量的特征提取算法。
3
Local characteristic scale of images plays an important role in featureextraction and local scale invariant construction.