期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2014
卷号：3
期号：5
页码：1560-1566
出版社：Shri Pannalal Research Institute of Technolgy
摘要：Digital Watermarking is one of the data hiding technique, has been popular in today for providing copyright protection. Fundamentally, to implement a digital watermarking, there are two approaches, pixel modification based and frequency domain based. In frequency domain based watermarking techniques, DCT and DWT are commonly used and popular today Watermarking embedded in frequency domain using DWT or DCT can affect the imperceptibility and robustness of watermarking. In order to compare the imperceptibility & robustness of the both algorithms make use of simple attacks such as resizing, rotation &cropping.
关键词：Digital watermarking; Discrete cosine transform ; (DCT); Discrete wavelet transforms (DWT); and ; Peak Signal to Noise Ratio (PSNR); Mean squared ; Error (MSE)
