Research of a Digital Image Watermarking Algorithm Resisting Geometrical Attacks in Fourier Domain

A digital image watermarking algorithm based on Fourier domain is proposed. This algorithm calculates an Invariant Centroid of the image and uses it as the origin of logarithm polar mapping (LPM). Then two-dimensional Discrete Fourier Transform (DFT) is performed on the LPM image. And then the ampli...

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Bibliographic Details
Published in2009 International Conference on Computational Intelligence and Security Vol. 2; pp. 265 - 268
Main Authors Xiu-mei Wen, Wei Zhao, Fan-xing Meng
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2009
Subjects
Copyright protection
Cryptography
Digital images
Discrete Fourier transforms
Discrete transforms
Fourier Domain
Fourier transforms
Image watermarking
Robustness
Safety
Signal processing algorithms
Watermarking
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Summary:A digital image watermarking algorithm based on Fourier domain is proposed. This algorithm calculates an Invariant Centroid of the image and uses it as the origin of logarithm polar mapping (LPM). Then two-dimensional Discrete Fourier Transform (DFT) is performed on the LPM image. And then the amplitude of intermediate frequency is used as the watermarking embedding domain. In order to enhance the safety of the algorithm, it is necessary to encrypt the watermarking signal with the key K, then carry out BCH code on the encrypted signal in order to enhance robustness of resisting various attacks of this algorithm. Therefore the algorithm has a promising prospect of wide use in the fields of the copyright protection of the digital image etc.
ISBN:1424454115
9781424454112
DOI:10.1109/CIS.2009.30