视觉掩蔽 meaning in English
visual masking
Examples
- Watermarking algorithm of good perception property can be designed by making full use of vision masking of hvs
进行水印嵌入时,充分利用人类视觉系统的视觉掩蔽特性,可以设计出感知性能良好的数字水印算法。 - In general , a watermark system must satisfy the two basic requirements : imperceptibility and robustness . in this thesis , we proposed a frequency - based watermarking algorithm using toral automorphisms , in which a kind of toral automorphism is employed to mix a recognizable binary image ( bw ) , which contains the copyright information , into a noise - like signal
算法简单描述如下：首先用一个环形自同构映射把要嵌入的数字水印映射成伪随机噪声，然后把该伪随机噪声嵌入到宿主数据频域的低频段中，接着把得到的频域系数进行相应的逆变换得到嵌入水印的图象，最后对该嵌入水印的图象进行视觉掩蔽处理。