Title
A Geometric Distortion Resilient Image Watermark Algorithm Based on DWT-DFT.
Abstract
In this paper, a robust watermarking algorithm against geometric distortions and common signal processing is proposed. This algorithm is based on two method to solve the synchronization of the original watermarking images and test images in the wavelet domain watermarking. One method, which estimates rotation and scaling based on embedding a template in a circle of middle frequency in DFT, One method which estimates translation based on extracting an invariant centroid from a restricted area inside the image. In the embedding process, a watermark is embedded adaptively in low band of DWT domain, according to the conceal quality of Human Visual System (HVS).The experiment results show robustness against common signal processing attacks, several geometric distortions and some combination attacks, Also the comparison with the prior algorithms shows the better performance of the proposed algorithm. © 2011 ACADEMY PUBLISHER.
Year
DOI
Venue
2011
10.4304/jsw.6.9.1805-1812
JSW
Keywords
Field
DocType
digital watermarking,direct fourier transform,geometric distortions,wavelet transform
Signal processing,Digital watermarking,Computer science,Human visual system model,Algorithm,Robustness (computer science),Watermark,Distortion,Wavelet transform,Wavelet
Journal
Volume
Issue
Citations 
6
9
6
PageRank 
References 
Authors
0.76
11
4
Name
Order
Citations
PageRank
Yuping Hu1131.95
Zhijian Wang285.22
Hui Liu37626.03
Guangjun Guo4181.47