计算机与现代化Issue(6)：172-175,4.DOI:10.3969/j.issn.1006-2475.2012.06.046
一种基于离散余弦变换的数字水印算法
A Digital Watermarking Algorithm Based on Discrete Cosine Transform
赖力 1丁劲松1
作者信息
- 1. 四川省产品质量监督检验检测院,四川成都610031
- 折叠
摘要
Abstract
This article researches on the algorithm of embedding digital watermarking in static gray images based on discrete cosine transformation (DCT), and focuses on the ways and means of embedding watermarking. The algorithmic principle is dividing the watermarking and original images into blocks, converting the blocks to DCT domain, and embedding them correspondency. However, the watermarking must be embedded in a certain place, that is embedding the watermarking to images in some of the intermediate frequency near low frequency part. The purpose is to make the embedded watermarking better hidden and resistant to attack. Experimental results show that under certain conditions, the watermarking can be well hidden in the original image with a certain degree of resistance to attack of smear or shear.关键词
灰度图像/数字水印/离散余弦变换Key words
gray image/ digital watermarking/ discrete cosine transformation分类
信息技术与安全科学引用本文复制引用
赖力,丁劲松..一种基于离散余弦变换的数字水印算法[J].计算机与现代化,2012,(6):172-175,4.
