基于递归修正Hough变换域的舰船多尾迹检测方法

针对SAR图像舰船尾迹的图像特征差异大的特点,提出基于递归修正Hough变换域的舰船多尾迹检测方法,即通过Hough变换域最大峰值检测出最明显的尾迹,再去掉Hough变换域最大峰以突出次大峰来检测第二条尾迹,由此递归修正Hough变换域多峰结构,直到检测完高于设定阈值的尾迹,从而实现线段对比度与宽度不同的舰船多尾迹检测。SAR图像多尾迹检测实验表明,该方法能有效检测具有图像特征差异的多直线尾迹。

Multi-ship wakes detection method based on recursive modified Hough transform field

A ship multi-wake detection method based on recursive modified Hough transform field is proposed for ship wakes with different imaging characteristic in SAR imagery.This method is to detect the obvious wake using the biggest peak value in Hough transform field firstly.Secondly,the biggest peak value is got rid of from the Hough transform field so as to give prominence to the hypo-peak value for the second wake.So recursively modifying the multi-peak structure of Hough transform field is going on till all wakes that their peak values in modified Hough transform field are higher than the threshold value are detected.And the detection for multi-wakes with different contrast and width is implemented.The experiment of multi-wake detection in the SAR imagery shows that the method proposed is effective for detecting multi-wakes with different imaging characteristic.