文章基本信息

标题：Embedding and Extracting Digital Watermark Based on DCT Algorithm
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作者：Haiming Li ; Xiaoyun Guo
期刊名称：Journal of Computer and Communications
印刷版ISSN：2327-5219
电子版ISSN：2327-5227
出版年度：2018
卷号：6
期号：11
页码：287-298
DOI：10.4236/jcc.2018.611026
语种：English
出版社：Scientific Research Publishing
摘要：The principle of digital watermark is the method of adding digital watermark in the frequency domain. The digital watermark hides the watermark in digital media, such as image, voice, video, etc., so as to realize the functions of copyright protection, and identity recognition. DCT for Discrete Cosine Transform is used to transform the image pixel value and the frequency domain coefficient matrix to realize the embedding and extracting of the blind watermark in the paper. After success, the image is attacked by white noise and Gaussian low-pass filtering. The result shows that the watermark signal embedded based on the DCT algorithm is relatively robust, and can effectively resist some attack methods that use signal distortion to destroy the watermark, and has good robustness and imperceptibility.
关键词：Digital Watermark;DCT Algorithm;White Noise;Gaussian Low-Pass Filtering;Robustness;Imperceptibility