基于HOUGH变换的雷达图像圆检测
首发时间:2007-09-18
摘要:电子海图和雷达图像的结合是船用导航系统发展的必然趋势,本文简单介绍了电子海图和雷达图像的相关概念及二者的叠加方式,分析了现有的几种用于圆检测的Hough变换算法,在充分对比这些算法的优缺点后,针对雷达图像自身的特点,选择一种适合雷达图像中圆检测的直线Hough变换方法,对如何选Hough变换的点组进行了详细的讨论,最后采取了遍历所有图像中非零点的方式;提出了一种基于固定距标圈的R(距离)方向投影方法来抹除原图像中固定距标圈的方法。
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Circle Detection of Radar Image Based on Hough Transform
Abstract:The combination of electronic chart and radar video image is of great value to marine navigation systems. The definition and the overlap mode of electronic chart and radar video image are briefly explained firstly in this paper. Some algorithms of Hough transform are also discussed. Then by comparing the characteristics of these algorithms, the Line Hough Transform based on the characteristic of radar video image is used for circle detection. The choice of points group which is employed in the Hough transform is discussed in particular. Finally, the paper decides that all the non_zero points are the input of the Hough transform and it provides a projection method in the direction of range to delete the range makers.
Keywords: Hough transform, circle detection, radar video processing
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No.1516514548711901****
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