Edge location in SAR images: performance of the likelihood ratio filter and accuracy improvement with an active contour approach
Edge location in SAR images: performance of the likelihood ratio filter and accuracy improvement with an active contour approach
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DOI：
10.1109/83.892444
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
O. Germain;P. Réfrégier
中科院分区：
文献类型：
--
作者：
O. Germain;P. Réfrégier
似然比边缘检测器是一种有效的合成孔径雷达（SAR）图像分割滤波器。我们表明，该过滤器提供了有偏见的边缘位置，当窗口不具有相同的方向的边缘。提出了一个现象学模型来描述这种偏见。然后，我们介绍了一种有效的技术来细化边缘定位：统计活动轮廓。这两种方法的组合允许实现精确和正则化的边缘定位。
The likelihood ratio edge detector is an efficient filter for the segmentation of synthetic aperture radar (SAR) images. We show that this filter provides biased location of the edge, when the window does not have the same orientation as the edge. A phenomenological model is proposed to characterize this bias. We then introduce an efficient technique to refine edge location: the statistical active contour. The combination of these two methods permits to achieve accurate and regularized edge location.