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

Wen, Xiumei; Zhao, Wei; Meng, Fanchao

doi:10.1109/cis.2009.30

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Geometrical distortion includes rotation, translation, scaling and shearing, projective transformation. Geometrical distortions are classified basically into two types [14] [15]…”

Section: Geometric Distortionmentioning

confidence: 99%

A Review on Geometric Invariant Digital Image Watermarking Techniques

Kumar¹,

Santhi²

2011

IJCA

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In recent days the computer communication and the usage of multimedia data is enormous in the Internet, so protection of those data from malicious attacks and signal processing operations are very important. In specific, geometric attacks are considered as serious attacks which make watermarked work get distorted such that it is difficult to extract hidden information. In this paper the detailed study is made on the various geometric attacks invariant watermarking algorithms and also a comparative study report is present for geometric attacks invariant watermarking systems.

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“…Geometrical distortion includes rotation, translation, scaling and shearing, projective transformation. Geometrical distortions are classified basically into two types [14] [15]…”

Section: Geometric Distortionmentioning

confidence: 99%

A Review on Geometric Invariant Digital Image Watermarking Techniques

Kumar¹,

Santhi²

2011

IJCA

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“…In our paper we have focused on the digital image watermarking. Digital image watermarking can be possible in both spatial and transform domain, where the transforms used are Discrete Fourier Transform [1], Discrete Cosine Transform [2], Discrete Wavelet Transform [3], Discrete Fast Walsh Hadamard Transform.Digital Watermark can be visible and invisible watermark. In case of visible watermark the watermark is visible to normal eye such as company logo ,TV channel icon, but for invisible watermark the watermark is not visible to normal eye.…”

Section: Introductionmentioning

confidence: 99%

Design of a Low Complexity and Fast Hardware Architecture for Digital Image Watermarking in FWHT Domain on FPGA

Ghosh

Biswas

Maity

et al. 2014

2014 Fifth International Symposium on Electronic System Design

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This paper focuses on the design of an improved Discrete Fast Walsh Hadamard Transform (DFWHT) domain digital image watermarking algorithm and its low complexity as well as fast hardware architecture implementation on Xilinx based (version 14.7 Virtex-7 series) FPGA with target device xc7vx1140t-1flg1930, with maximum achieved frequency of 259.202 MHz. The architecture proposed here is to our best knowledge is the first architecture for the corresponding algorithm. Both encoding and extraction algorithm have been verified using MATLAB R2013a. Both grayscale and binary watermarks are used and only grayscale cover image of maximum size (256 x 256) is used. The algorithm and the architecture is applicable for both gray scale and binary watermarks.

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