关键词: 遥感信息工程, 图像配准, 两步法, 特征点匹配, 干涉合成孔径雷达, 亚像元级

Abstract:

Detecting feature points automatically and accurate feature matching are the two crucial steps in InSAR image registration. In this paper, an automatic feature-based registration algorithm is presented. We concentrate on two major steps: feature detection and feature matching. In feature detection, we design the templates to extract feature points by utilizing its high curvature property. In feature matching, we complete the process of the feature matching by using the matching algorithm proposed according to the conclusion of the near distance.

Key words: Remote , sensing , information , engineering, Image , registration, Two-step , method, Feature , points , matching, InSAR, Sub-pixel , accuracy