Polarimetric feature for registration of polarimetric SAR images

Wenting MA; Jian YANG; Wei GAO; Guangyi ZHOU

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Journal of Tsinghua University(Science and Technology) ›› 2014, Vol. 54 ›› Issue (2) : 270-274.

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Polarimetric feature for registration of polarimetric SAR images

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Abstract

The registration of multi-band polarimetric synthetic aperture radar (SAR) images is a key problem for image fusion. This paper presents a feature based on the polarimetric scattering mechanism for registration using the scale invariant feature transform (SIFT) algorithm. The feature represents information for the main scattering component and the influence of the other scattering components distribution and has good consistency for multi-band polarimetric SAR images. Tests demonstrate that the feature difference between multi-band polarimetric SAR images is less than the total scattered power (Span) difference. The SIFT algorithm is then used to get more key points, more correct registration points, and better spatial distribution of the correct registration points. The registration efficiency is remarkably increased by this feature.

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synthetic aperture radar (SAR) / polarimetric scattering feature / scale invariant feature transform (SIFT) / image registration

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Wenting MA, Jian YANG, Wei GAO, Guangyi ZHOU. Polarimetric feature for registration of polarimetric SAR images[J]. Journal of Tsinghua University(Science and Technology). 2014, 54(2): 270-274

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