The image watermarking scheme based on scale invariant feature transform(SIFT) is proposed for resisting rotation scale translation(RST) attacks.
提出一种利用SIFT关键点实现对RST攻击校正的半盲水印方案。
The variety of ear angle and occlusion are the difficulties of ear recognition. The Scale Invariant Feature Transform(SIFT) is invariant to image scaling, translation and rotation.
人耳的角度变化和遮挡是人耳识别中的难点问题，SIFT局部描述算子具有对图像尺度缩放、平移、旋转等的不变性，因此提出利用SIFT特征的人耳识别算法。
However, the original contourlet transform has a certain redundancy and lacks translation invariance, it tends to have its limitation in the applications such as image processing.
但是，原始的轮廓波变换由于采用拉普拉斯塔式变换而存在一定的冗余度，并且缺乏平移不变性，因此在图像处理等应用中具有其局限性。
However, the original contourlet transform has a certain redundancy and lacks translation invariance, it tends to have its limitation in the applications such as image processing.
但是，原始的轮廓波变换由于采用拉普拉斯塔式变换而存在一定的冗余度，并且缺乏平移不变性，因此在图像处理等应用中具有其局限性。
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