【摘要】 该文提出了一种SAR图像中曲线检测的新方法。用一个明晰的模型表示了曲线,根据输入信息自动计算出阈值(二阶梯度),利用曲线中心处一阶梯度为0,二阶梯度最大的特点,检出可能的曲线点。接着做曲线点的跟踪,最终将曲线点连成线。可以做到自动识别,无需人工干预,而且曲线的位置是亚像素级别的。更多还原

【Abstract】 A new algorithm of curve detection in SAR Images is proposed in this paper.The algorithm uses an explicit model for curves,calculates the threshold(the second derivative)automatically by the input data.The candidate points are detected by using gradient kernels,which show that the first derivation vanishes and the second derivation is maximum at the salient curve.Then link the candidate points.The whole progress is finished automatically.Furthermore the algorithm returns the precise subpixel line position.更多还原