We propose a multistage SAR target recognition process based on target detection, target segmentation, target aspect estimation and invariant feature extraction.
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。
The SIFT algorithm is proposed in this study is a feature extraction 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。
Local characteristic scale of images plays an important role in feature extraction and local scale invariant construction.
图像的局部特征尺度在进行特征提取和构造尺度不变量时非常重要。
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