乱作

"Random work"

以上为机器翻译结果，快速获取精准的人工翻译结果，建议选择有道人工翻译

1
为保证水印的安全性，在嵌入之前先对水印图像作置乱处理，再将水印图像位扩展为原始图像的两倍大小。
To ensure the security of wartermark, the wartermark image was scrambled beforeembedding and then expanded to the twifold size of the original image.
2
乱造：双截龙兄弟，恭候多时了！你们过得了我的手下，但是他们的功夫跟我比就像是小孩子在作游戏。我的忍术是不可战胜的。
RANZOU: Welcome double dragons! You may have gotten past my men... but they fight like children compared to me. My NINPOU is unbeatable.
3
利用小波分解的能量分布规律，提出了基于小波变换的图像隐藏算法，并利用素数置乱对隐藏算法作进一步的改进。
By using the energy distribution of the wavelet decomposition, image hiding algorithm based on wavelet transformation is presented, and then improved with prime number scrambling algorithm.

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