...学期望；边缘信息；中值滤波；亚像素精度 [gap=1006]Key words: moments；mathematical expectations；marginal information；median filter；subpixel precision ...
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In this algorithm, the marginal information in DCT domain is used as original watermark, then is encrypted by chaos sequence and is embedded by replacing LSB bits on selected low frequency location in quatitative DCT coefficients.
该算法从DCT域提取边缘信息做为原始水印,经过混沌序列加密,在量化DCT系数的选定低频位置通过LSB位替换嵌入。
参考来源 - 基于数字水印的图像版权保护与认证技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Analyses compression results with different compression ratios, and compares the original images with the marginal information of decoded images.
对不同压缩比的压缩结果进行了分析，比较了原始图象和解压图象的边缘信息。
There's never been a more competitive market than the Internet, and every day the marginal cost of digital information comes closer to nothing.
没有什么能比互联网产业更具竞争性，数字信息的边际成本日益趋零。
And the business of selling information to consumers has always been a marginal one.
并且销售信息一直都是一个边缘行业。
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