中文说明：实现图像的对数极坐标变换，具有旋转不变性，可用于数字水印的抗几何攻击
English Description：
Log polar transformation of image is realized, which has rotation invariance and can be used to resist geometric attacks
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中文说明：实现图像的对数极坐标变换，具有旋转不变性，可用于数字水印的抗几何攻击
English Description：
Log polar transformation of image is realized, which has rotation invariance and can be used to resist geometric attacks