A Robust Digital Image Watermarking Scheme Using the Wavelet-Based Fusion
ICIP '97 Proceedings of the 1997 International Conference on Image Processing (ICIP '97) 3-Volume Set-Volume 1 - Volume 1
A Robust Digital Image Watermarking Scheme Using the Wavelet-Based Fusion
ICIP '97 Proceedings of the 1997 International Conference on Image Processing (ICIP '97) 3-Volume Set-Volume 1 - Volume 1
Rotation, Translation and Scale Invariant Digital Image Watermarking
ICIP '97 Proceedings of the 1997 International Conference on Image Processing (ICIP '97) 3-Volume Set-Volume 1 - Volume 1
Template Based Recovery of Fourier-Based Watermarks Using Log-polar and Log-log Maps
ICMCS '99 Proceedings of the IEEE International Conference on Multimedia Computing and Systems - Volume 2
An adaptive digital image watermarking technique for copyright protection
IEEE Transactions on Consumer Electronics
Hidden digital watermarks in images
IEEE Transactions on Image Processing
A secure multicast protocol with copyright protection
ACM SIGCOMM Computer Communication Review
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Digital watermarking is the process of embedding a pattern or an icon into an image to establish legal ownership to protect the copyrights of the image in a publicly accessible image database. In this paper, we propose three robust watermarking schemes. One of our schemes, Diagonal Insersion (DI), modifies the Fourier coefficients of the middle frequencies of the input image, according to a binary string. Another scheme, Randomized Multiple Circles (RMC), is based on a technique proposed by Licks [8] which embeds a binary string by modifying the Fourier coefficients along concentric circles. We introduce a random perturbation into the radius of the circles to protect the waterwark from removal (cryptographic attack). A hybrid technique (HY) is also proposed to combine DI and RMC. These methods are robust against various attacks, such as geometric transformation, filtering, cropping and histogram equalization. Some experiemental results are also reported.