(ii) 视觉攻击法 ( Visual Attack )：此种攻击法适用于使用LSB 技术的空 间域藏密法，在像素的最低位元藏密后，虽然整个图像可达到不 可察觉性；但是由于藏密资料集...
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Before a bottlenose will attack, it engages in the behavior called 'jaw clapping'. This is a clear visual and audible threat.
在宽吻海豚攻击前，它会进行一种叫做“上下颚敲击”的行为。这是一种明显的视觉和听觉威胁。
They can't attack from them but it is still great to do this to maintain visual range on an area.
尽寇驻守时它们不能攻击，不过在一个地区保持一定的可视范围也是很有用的。
At last, Watermarking attack based on visual model has been discussed, and some feasible solutions have been brought forward.
最后讨论了基于视觉模型的水印攻击，并探讨了相应的解决方案。
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