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提出了一种使用多指数模型的SAR海冰图像入射角偏差场校正的新算法,该算法先对SAR图像进行方位向取平均,然后用多指数模型对一维校正场建模,应用熵值最小化方法求取最优的一维校正场,再用推出的二维校正场对原始图像进行校正。实验结果表明,该算法对于SAR海冰图像的入射角偏差场校正是有效的。与Karvonen的算法相比,该算法有更好的校正效果,且不需要提供像素的入射角信息。 更多还原

【Abstract】 The paper proposes a novel algorithm of SAR sea ice image incidence angle bias field correction using multi-exponential model.In the algorithm,the image mean values along SAR azimuth direction are firstly calculated.Then an one-dimensional correction field is modeled by a multi-exponential model.Whereafter,the one-dimensional correction field is calculated by applying entropy minimization method.After that the original image is corrected by the two-dimensional correction field derived from the o... 更多还原