基于多尺度双邻域显著性的高分四号遥感图像运动船舶检测方法

Moving Ship Detection Method Based on Multi-scale Dual-neighborhood Saliency for GF-4 Satellite Remote Sensing Images

静止轨道(GEO)的高分四号(GF-4)卫星具备对海上运动船舶进行连续观测的能力,由于轨道高,海面船舶在GF-4卫星遥感图像中比较弱小不易检测。该文分析海面运动船舶的尾迹特征,提出一种基于多尺度双邻域显著性(MDSM)的GF-4卫星遥感图像运动船舶检测方法。首先依据多尺度双邻域显著性模型计算显著度,生成显著图;然后使用自适应阈值分割提取运动船舶的位置;最后利用尾迹几何特征对候选目标的形状进行校验,进一步去除虚假目标。实验结果和分析表明,所提方法可以有效地检测GF-4卫星遥感图像中的多个运动船舶目标,相比目前主流的视觉显著性检测算法,该文所提算法具有更好的检测性能。

The GEostationary Orbit(GEO)GF-4 satellite has the ability to observe continuously moving ships at sea.Ship targets are often weak in the optical remote sensing images of GF-4 satellite,making it difficult to detect directly.By analyzing the wake characteristics of moving ships,a moving ship detection method based on Multi-scale Dual-neighborhood Saliency Model(MDSM)is proposed.First,the saliency of the image is calculated based on MDSM.Then,the position of the moving ship is extracted by adaptive segmentation threshold.Finally,the shape of the candidate target is verified to remove further the false target.Experimental results and analysis show that the proposed method can effectively detect multiple moving targets in GF-4 satellite images,and has better detection performance compared with the current mainstream visual saliency algorithms.