InSAR Local Co-Registration Method Assisted by Shape-From-Shading
InSAR Local Co-Registration Method Assisted by Shape-From-Shading
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DOI：
10.1109/jstars.2012.2219506
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发表时间：
2013-04
影响因子：
5.5
通讯作者：
R. Natsuaki;A. Hirose
中科院分区：
文献类型：
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作者：
R. Natsuaki;A. Hirose
干涉合成孔径雷达（干涉合成孔径雷达）是一种有效的地形观测技术。然而，合成孔径雷达（SAR）干涉图通常包含大量的旋转点，即奇异点（SP）。SPs严重影响数字高程模型（DEM）的生成质量。SP的主要来源之一是主图像和从图像的配准中的局部失真，主图像和从图像是干涉图的源。在此之前，我们提出了一个本地和精细的主和从注册的方法，使用SP的数量作为评估标准（SPEC方法）。在本文中，我们提出了一个改进版本的SPEC方法，它使用的形状从阴影技术，另外更好的调整。结果表明，与传统的SPEC方法相比，该方法提高了从干涉合成孔径雷达图像生成DEM的信噪比。
Interferometric synthetic aperture radar (InSAR) is a useful technology to observe the earth topography. However, a synthetic aperture radar (SAR) interferogram usually includes a lot of rotational points, that is, singular points (SPs). SPs seriously affect the quality of generated digital elevation model (DEM). One of the dominant origins of the SPs is the local distortion in the co-registration of the master and slave images, which are the source of the interferogram. Previously, we proposed a local and fine co-registration method of the master and the slave using the number of SPs as the evaluation criterion (SPEC method). In this paper, we propose an improved version of the SPEC method which uses the shape-from-shading technique additionally for a better adjustment. In comparison to the conventional SPEC method, results indicate that the proposed technique improves the signal-to-noise ratio of the created DEM from InSAR images.