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基于傅里叶-梅林变换特性和相位相关性，提出了一种新的抗几何失真数字水印算法。
A new watermarking detecting algorithm which resists geometric distortion is proposed, based on Fourier-Mellin transform and phase correlation features.
在水印算法中用奇异值分解可以提高图像的抗几何失真性，但它对椒盐、高斯、滤波等攻击的抵抗能力却很弱。
Use singular value decomposition (SVD) in the watermark algorithm may enhance the anti-geometry distortion of the image, but it is very weak to some attacks such as salt, gauss, filter and etc.
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