Robust dual watermarking algorithm for AVS video
Image Communication
Hyperbolic RDM for nonlinear valumetric distortions
IEEE Transactions on Information Forensics and Security
Robust localized image watermarking based on invariant regions
Digital Signal Processing
Scalar Costa scheme for information embedding
IEEE Transactions on Signal Processing
Amplitude Scale Estimation for Quantization-Based Watermarking
IEEE Transactions on Signal Processing
Analysis and design of secure watermark-based authentication systems
IEEE Transactions on Information Forensics and Security
IEEE Transactions on Information Forensics and Security
IEEE Transactions on Information Theory
Secure spread spectrum watermarking for multimedia
IEEE Transactions on Image Processing
Applying informed coding and embedding to design a robust high-capacity watermark
IEEE Transactions on Image Processing
A DWT-DFT composite watermarking scheme robust to both affine transform and JPEG compression
IEEE Transactions on Circuits and Systems for Video Technology
Blind Image Watermarking Using a Sample Projection Approach
IEEE Transactions on Information Forensics and Security - Part 2
Robust Image Watermarking Based on Multiscale Gradient Direction Quantization
IEEE Transactions on Information Forensics and Security
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Very recently, a novel watermarking scheme named sample projection approach (SPA) has been proposed by Akhaee et al. [1] to improve the watermarking performance against gain attacks. The SPA embeds one message symbol into four signal samples by projecting the line segment formed by the four samples on a certain specific codeline. Based on the SPA, this paper presents an improved sample projection approach (ISPA) by introducing a set of modified codelines to decrease embedding distortion and constructing the long line segments to increase robustness. According to our theoretical analysis of document-to-watermark ratio (DWR), the modified codelines result in a lower embedding distortion than the SPA@?s codelines in the same conditions with regard to payload and robustness. We also derive a theoretical expression for the symbol error rate (SER) of the ISPA against additive white Gaussian noise (AWGN) attack. The numerous experiments conducted on both artificial Gaussian signals and the natural images show that the proposed ISPA outperforms the SPA in terms of robustness against attacks.