Junction Point Detection Algorithm for SAR Image

Junction Point Detection Algorithm for SAR Image
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SAR图像连接点检测算法

DOI:
10.1155/2013/357379
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发表时间:
2013-03
影响因子:
1.5
通讯作者:
Lian, Lin
Lian, Lin
中科院分区:
计算机科学4区
文献类型:
--
作者:
Zhang, Jun;Luo, Tingjin;Gao, Gui;Lian, Lin

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在本文中,我们提出了一种新的交界点检测器的基础上,一个方位一致的遥感图像。为了消除噪声和SAR图像中不相关边缘的影响,提出了方位一致性约束。除了在子像素级别检测结的位置之外,该操作符还识别它们的结构。提出了一个新的公式,其中包括一个最小化的总加权距离的标准,以准确地计算交界点的位置。实验结果表明,与Forstner、JUDOCA和CPDA等著名检测器相比,该算子在结点定位精度和分支边缘角度精度上均优于它们.此外,我们的方法具有令人满意的鲁棒性的噪声和SAR图像的变化的影响。我们的算子可以潜在地用于解决计算机视觉中的许多问题,例如SAR图像配准、宽基线匹配和无人机导航系统。
In this paper, we propose a novel junction point detector based on an azimuth consensus for remote sensing images. To eliminate the impact of noise and some noncorrelated edges of SAR image, an azimuth consensus constraint is developed. In addition to detecting the locations of junctions at the subpixel level, this operator recognizes their structures as well. A new formula that includes a minimization criterion for the total weighted distance is proposed to compute the locations of junction points accurately. Compared with other well‐known detectors, including Forstner, JUDOCA, and CPDA, the experimental results indicate that our operator outperforms them both in location accuracy of junction points and in angle accuracy of branch edges. Moreover, our method possesses satisfying robustness to the impact of noise and changes of the SAR images. Our operator can be potentially used to solve a number of problems in computer vision, such as SAR image registration, wide‐baseline matching, and UAV navigation system.
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