Improved method for SAR image registration based on scale invariant feature transform
Improved method for SAR image registration based on scale invariant feature transform
复制标题
基于尺度不变特征变换的SAR图像配准改进方法
DOI:
10.1049/iet-rsn.2016.0261
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发表时间:
2017-04
影响因子:
1.7
通讯作者:
Zhang Kun
中科院分区:
文献类型:
--
作者:
Zhou Deyun;Zeng Lina;Liang Junli;Zhang Kun
Scale invariant feature transform (SIFT) is one of the most common registration algorithms for synthetic aperture radar (SAR) images. However, the occurrence of speckle noise and geometric distortion within SAR images usually leads to limited effectiveness, challenging the stability of SIFT and its variants in real actual applications. In this study, significant improvements for SAR image registration with SIFT are made, which lie mainly in two aspects. First, a scheme is developed to enhance the description of keypoints with improved dominant orientation assignment and support region. Second, an optimised matching method for further enhancing the matching performance is developed to reduce the mutual interference among the keypoints with similar location and dominant orientations. Extensive experiments confirm the effectiveness of the proposed algorithm for SAR images.
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