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傅里叶相位差谱在卫星目标图像检测中的应用

DOI: 10.13190/jbupt.201105.97.zhangshd, PP. 97-100

Keywords: 傅里叶相位差谱,二维直方图,目标检测

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Abstract:

提出一种利用序列图像傅里叶相位差谱的特征检测卫星目标的算法.欲跟踪的卫星目标往往淹没在星海中,仅仅依据星体特征检测出目标很繁琐,也很困难.从傅里叶变换的相谱差异特性出发,将序列图像相邻2帧图像中的前一帧图像通过相谱补偿后与后一帧图像对比,检测出奇异的卫星目标,再利用帧差法剔除伪目标,给出跟踪目标的运动轨迹.同时,为了提高该算法的抗噪声能力,针对遇到的实际情况提出基于二维直方图改进的图像二值化算法.通过实验验证了该算法的可行性,结果表明,所提出算法的检测误差与人工捕获相比不超过1个像素.

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