文章基本信息

标题：Embedded Zero -Tree Wavelet Based Image Steganography
本地全文：下载
作者：Vijendra Rai ; Jaishree Jain ; Ajay Kr. Yadav 等
期刊名称：International Journal of Electronics and Computer Science Engineering
电子版ISSN：2277-1956
出版年度：2012
卷号：1
期号：3
页码：1238-1243
出版社：Buldanshahr : IJECSE
摘要：Image steganography using Discrete Wavelet Transform can attain very good results as compared to traditional methods, in this paper we discuss a method to embed digital watermark based on modifying frequency coefficient in discrete wavelet transform (DWT) domain. This method uses the embedded zero-tree (EZW) algorithm to insert a watermark in discrete wavelet transform domain. EZW is an effective image compression algorithm, having property that image in the bit stream are generated in order of importance. The objective is to watermark the image while maintaining the image quality in terms of signal to noise ratio. The quality of the watermarked image is very close to the original image and it shows high robustness against image processing attacks
关键词：Discrete Wavelet Transform; DCT; watermarking; zero-tree