中文摘要：

在这糊能抵抗到旋转的盲目图象 watermarking，可伸缩；翻译(RST ) 攻击被建议。基于传播光谱，水位标在嵌入前被调制。木头极印射分离一个磁盘的四 ier 变换(LPM-DFT ) 大小，起源图象的部分，组成 RST 不变的域，在 LPM 的起源是磁盘的中心的地方；LPM 的采样率是不变的。在 LPM-DFT 大小的中间的频率乐队后面，也就是嵌入水位标的领域，根据水位标长度被组织，水位标被在每个集团调整二个分区精力之间的差别嵌入。改进无法感知，嵌入水位标的领域在嵌入前被洗牌；水位标没直接被嵌进嵌入水位标的领域。在水位标察觉过程，关于失真的既不原来的图象也不任何知识被要求。试验性的结果证明建议计划对 RST 失真是很柔韧的；普通图象处理攻击。

英文摘要：

In this paper a blind image watermarking that can resist to rotation, scaling and translation （RST） attacks is proposed. Based on the spread spectrum, the watermark is modulated before embedding. The logpolar mapped discrete fourier transform （LPM-DFT） magnitude of a disk, a part of the origin image, constitutes the RST-invariant domain, where the origin of the LPM is the center of the disk and the sampling rates of the LPM are constant. After the middle frequency band of LPM-DFT magnitude, namely the watermark-embedding domain, is grouped according to the watermark length, the watermark is embedded by adjusting the difference between the two sub-region energy in each group. To improve the imperceptibility, the watermark-embedding domain is shuffled before embedding and the watermark is not embedded directly into the watermark-embedding domain. In watermark detection procedure, neither the original image nor any knowledge about the distortions is required. Experimental results show that the proposed scheme is very robust against RST distortion and common image processing attacks.