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| 一种利用SAR图像检测船舶尾迹的方法 | |
| 引用本文： | 张宇,张永刚,黄韦艮,楼琇林.一种利用SAR图像检测船舶尾迹的方法[J].国土资源遥感,2003,14(1):56-58. |
| 作者姓名： | 张宇 张永刚 黄韦艮 楼琇林 |
| 作者单位： | 1. 海军大连舰艇学院,大连,116018 2. 国家海洋局第二海洋研究所,杭州,310012 |
| 摘 要： | 给出了一种检测星载SAR(合成孔径雷达)图像中船舶尾迹的方法,该方法主要特点是将Radon变换局部化,即在对像素灰度值积分过程中沿着线性特征被分割后的若干短线段进行积分,而非对整张图像进行积分.该方法克服了Radon变换方法的局限性,使尾迹信号在背景噪声较强时依旧能被检测出,并且能检测出相对于整幅图像的尺寸较短小的尾迹. |
| 关 键 词： | SAR 局部Radon变换 尾迹 |
| 文章编号： | 1001-070X(2003)01-0056-03 |
| 收稿时间： | 2002-10-12 |
| 修稿时间： | 2002年10月12 |
A METHOD FOR DETECTING SHIP WAKES IN SAR IMAGES |
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| Institution: | 1. Dalian Navy Academy, Dalian 116018, China; 2. Second Institud of Oceanography, Hanzhou 310012, China |
| Abstract: | This paper presents a method for detecting ship wakes in Synthetic Aperture Radar (SAR) images. The method has been improved on the basis of the Radon transform. The key element of this method is the localization of the Radon transform, whereby the gray integration of the pixels is performed over short line segments rather than across the entire image. It overcomes the limitation of the Radon transform. The results of this test demonstrate the robustness of the method in the presence of noise as well as its capability of detecting wake features that are significantly shorter than the image dimensions. |
| Keywords: | SAR Localized radon transform wake |
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