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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Analytic Search Method for Interferometric SAR Image Registration
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Analytic Search Method for Interferometric SAR Image Registration

机译:干涉SAR图像配准的解析搜索方法

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摘要

We propose an analytic search method for interferometric synthetic aperture radar (InSAR) image registration. An analytic cost function is established, and the subpixel offsets associated with the maximum of the cost function are continuously searched by direction-alternate optimization methods along vertical and horizontal directions. We establish a novel dual-quartic analytic cost function for extraction of subpixel offsets from a corresponding pixel pair established by pixel-level registration. A robust optimization method that is called biiteration algorithm for searching the maximum point of the dual-quartic cost function is developed to solve the subpixel offsets. Since the dual-quartic cost function is quartic if one of two parameters is fixed, one of two substeps including in each iterative step of the efficient biiterative method is to find the solution by the secant method. The performances of the proposed method are shown by using simulated and real data and compared with those of representative existing registration method.
机译:我们提出了一种干涉式合成孔径雷达(InSAR)图像配准的解析搜索方法。建立解析成本函数,并通过沿垂直和水平方向的方向交替优化方法连续搜索与成本函数的最大值相关的子像素偏移。我们建立了一种新颖的双四次解析成本函数,用于从通过像素级配准建立的对应像素对中提取子像素偏移。为了解决子像素偏移问题,提出了一种鲁棒的优化算法,称为双迭代算法,用于搜索双四次成本函数的最大值。如果固定两个参数之一,则双四次成本函数是四次的,因此在有效biiter方法的每个迭代步骤中包括的两个子步骤之一就是通过割线法找到解。通过模拟和真实数据展示了该方法的性能,并与现有的代表性注册方法进行了比较。

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