Fast Rotation Matching Method for SAR and Optical Images

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

Guangcai Sun¹  Mengdao Xing²  Xinchen Li²  Yachao Li²  Liang Guo³  Tao Xiong³  Liang Han³ 

[1] National Laboratory of Radar Signal Processing, Xidian University, Xi&x0027;School of Physics and Optoelectronic engineering, Xidian University, Xi&x0027;an, China;

关键词: Directional derivative;    optical image;    rotation matching;    synthetic aperture radar (SAR);   

DOI  :  10.1109/JSTARS.2021.3124552

来源: DOAJ

【 摘 要 】

The rotation matching between synthetic aperture radar (SAR) and optical images is essential for their registration. In this article, we introduce a novel fast rotation matching method for SAR and optical images. In the method, the absolute directional derivative histograms (ADDHs) of SAR and optical images can be used to reflect the rotation difference between them, and then the rotation difference is removed by the cross correlation of the two images’ ADDHs. Subsequently, we generate the ADDHs by oriented Gaussian-Gamma-shaped operator. Then, the cross correlation based on fast Fourier transform is used to deal with the ADDHs of SAR and optical images in order to determine the rotation difference of the two images. The experiment results demonstrate that the proposed method can detect the rotation difference in various conditions and achieves rotation matching with high speed.

【 授权许可】

Unknown