Title
Robust hybrid color image watermarking method based on DFT domain and 2D histogram modification.
Abstract
In this paper, we present a robust hybrid watermarking method applied to color images for authentication, which presents robustness against several distortions. Due to the different nature of common signal processing and geometrical attacks, two different techniques for embed a same watermark are used in this method. In the first one, the luminance component (Y) information is used to embed the watermark bit sequence into the magnitude of the middle frequencies of the Discrete Fourier Transform (DFT). In the second one, a selected region of 2D histogram composed by blue-difference and red-difference (Cb–Cr) chrominance components is modified according to the watermark bit sequence. The quality of the watermarked image is measured using the following well-known indices peak signal to noise ratio (PSNR), visual information fidelity (VIF) and structural similarity index (SSIM). The difference color of the watermarked image is obtained using the normalized color difference (NCD) measure. The experimental results show that the proposed method provides robustness against several geometric distortions, signal processing operations, combined distortions and photo editing. The comparison with the previously reported methods based on different techniques is also provided.
Year
DOI
Venue
2014
10.1007/s11760-013-0459-9
Signal, Image and Video Processing
Keywords
Field
DocType
Authentication, Robust watermarking, Histogram modification, Geometric attacks, Hybrid watermarking
Histogram,Computer vision,Peak signal-to-noise ratio,Digital watermarking,Pattern recognition,Chrominance,Watermark,Robustness (computer science),Artificial intelligence,Discrete Fourier transform,Color difference,Mathematics
Journal
Volume
Issue
ISSN
8
1
1863-1711
Citations 
PageRank 
References 
10
0.54
18
Authors
4