摘要： 针对SAR图像的自动配准问题，提出了一种基于轮廓特征的快速配准方法。在对SAR图像正确检测和分割的基础上提取图像的区域轮廓，并对其几何特征属性进行准确描述，利用配准点可以实现自动图像配准，仿真试验表明可以获得亚像素级配准结果。

关键词: 合成孔径雷达, 图像配准, 轮廓特征匹配, 特征提取

Abstract: To realize automatic registration of SAR image, an approach of fast match based on patch is proposed. Based on the correct region detection and segmentation, patches are extracted and their geometric features are accurately described, so image is registered by homologous points. Application of the proposed automatic registration model shows that it achieves sub-pixel level results.

Key words: SAR, Image registration, Patch-based match, Feature extraction