基于改进的归一化Hough变换的ASAR图像船只尾迹检测

Ship Wake Detection in ASAR Image Based on Modified Normalized Hough Transform

针对先进合成孔径雷达(ASAR)图像中部分船只与其尾迹偏移不大、基本可被认为在一条直线上的特点,利用船只的强反射,提出了一种基于改进的归一化灰度Hough变换的船只尾迹检测方法,修正了变换域中的峰值检测,同时增加了确定尾迹起点和终点的约束条件。实验结果表明,该方法能够比较准确地检测到船只尾迹。

A ship wake detection method based on modified normalized Hough transform was proposed in this paper according to the fact that parts of ships and their wakes are nearly on a straight line in advanced synthetic aperture radar（ASAR） image. Experiments were made to verified the method. On the one hand, the peaks were modified in Hough transform field ; on the other hand, the constraint conditions confirming initial and end points of ships were amended. The experimental results show that the method of wake detection in the ASAR image can more accurately deteci ship wakes.