期刊信息
![](/web/statics/zr_qikan_img.jpg)
- 刊名: 河北师范大学学报(自然科学版)Journal of Hebei Normal University (Natural Science)
- 主办: 河北师范大学
- ISSN: 1000-5854
- CN: 13-1061/N
- 中国科技核心期刊
- 中国期刊方阵入选期刊
- 中国高校优秀科技期刊
- 华北优秀期刊
- 河北省优秀科技期刊
Arithmetic on Digital Watermarking of Image Based on DCT-block by Selected Random
摘要/Abstract
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.
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.
关键词
Key words:
protectimage
;
digital watermarking
;
embedding
;
spread spectrum
;
SNR
;
DCT-block