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同构映射的英文

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"同构映射"怎么读用"同构映射"造句

英文翻译手机手机版

  • isomorphic ma ing
  • isomorphic mapping

例句与用法

  • 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。
  • The embedded bw also successfully survives cropping , filtering , noise and multi - watermarking etc . the new ideas the thesis proposed are : first , frequency - based watermarking idea using toral automorphisms is really a novel one , although , in the literature , there are some waterniarking schemes using toral autpmorphisms , all of which are based on space ; second , some improvements of the quantization function contribute to the algorithm ' s performances to some degree
    另外该算法对图象裁剪、滤波、噪声和多重水印处理等都具有较强的鲁棒性。本文提出了两个新思想:第一,虽然现有文献已经提出了利用环形自同构映射的数字水印处理算法,但这种算法是基于空域的,而利用环形自同构映射基于频域的水印处理算法,目前文献上未见报道。
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