Experimental results show that this algorithm has a good hiding effect and is robust for single attack and even collage attacks.

实验结果表明，该算法的隐藏效果很好，并且对单一攻击及多种复合攻击具有很好的鲁棒性。

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Pointing out the limitation of the image authentication algorithm based on dividing blocks and give the reason why collage attack can be successful.

指出基于分块的图像认证方法存在的缺陷，以及共谋攻击得以成功的原因；

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The experimental results have demonstrated that this algorithm can locate the tampered area as well as detecting "collage-attack" to the watermarked image.

实验结果表明，该算法不仅具有良好的定位篡改区域功能，而且能够有效地克服“拼贴攻击”。

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The experimental results have demonstrated that this algorithm can locate the tampered area as well as detecting "collage-attack" to the watermarked image.

实验结果表明，该算法不仅具有良好的定位篡改区域功能，而且能够有效地克服“拼贴攻击”。

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