文章基本信息

标题：Feature Based watermarking algorithm for Image Authentication using D4 Wavelet Transform
本地全文：下载
作者：Kartik Sau ; Amitabha Chanda ; Milan Pal 等
期刊名称：Signal & Image Processing : An International Journal (SIPIJ)
印刷版ISSN：2229-3922
电子版ISSN：0976-710X
出版年度：2011
卷号：2
期号：3
页码：89
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：In this paper we propose a new watermarking schema i.e. the combination of color space and wavelettransform. Watermarking is a technique that authenticates a digital picture by hiding the secret informationinto the image. Now, a lot of algorithms and methods have been developed for greyscale images but theparticularities of color spaces have to be studied. On the other hand, the wavelet transform allows differentpossibilities of integrating a mark because of the uses of different parameters: the scale of decomposition,size, shape and localisation of the mark, and the used color space, etc. The RGB (Red, Green, and Blue)values of each pixel of the host color image as well as the color key image are converted to HSV (Hue,Saturation, and Value) values. Then the orthogonal D4 Wavelet transform is applied in each plate of hostimage and key image. Now insert the key component into appropriate blocks of host image’s differentplates. The experimental results show the effectiveness of our algorithm
关键词：Digital watermarks; D4wavelet transform; color space; human visual system.