在线阅读 --自然科学版 2003年4期《一种基于DCT随机选块的图像数字水印算法》
一种基于DCT随机选块的图像数字水印算法--[在线阅读]
马强
浙江警官职业学院信息系, 浙江杭州 310018
起止页码: 352--356,367页
DOI:
摘要
基于保护静态图像的目的,分析了扩展频谱通信和NEC数字水印算法的实现技术,通过扩充宿主图像频谱和随机选取DCT块,提出了在宿主图像的子频域中嵌入微量水印位标识的方法,构造和设计了一种嵌入和提取数字水印标识的算法,并给出了该算法有效性的一组测试数据及实例.

Arithmetic on Digital Watermarking of Image Based on DCT-block by Selected Random
MA Qiang
Department of Information, Zhejiang Officer Vocational College, Zhejiang Hangzhou 310018, China
Abstract:
Based on protect image,a technology of communicating with spread spectrum and arithmetic of digital watermarking is analysed,by spread spectrum for host image and random selected DCT-block, show a method that stochastic embedding a few ID with watermarking bits,then made and design a arithmetic on embedding and gathering ID of it,show a set of testing data,or example on it's validity at end.

收稿日期: 2003-2-18
基金项目:

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