Design of robust and fragile image watermarking system for copyright protection and authentication using lifting wavelet transform and bivariate empirical mode decomposition techniques

In this thesis, a dual purpose watermarking system is designed that satisfy both robustness and fragility, and thus combining copyright protection and tamper proofing simultaneously without significantly degrading each other. The proposed copyright scheme is new and effective. Two transforms whic...

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Main Author:	Abbas, Nidaa Hasan
Format:	Thesis
Language:	English
Published:	2017
Subjects:	Data encryption (Computer science) Computer security
Online Access:	http://psasir.upm.edu.my/id/eprint/71170/1/FK%202017%2047%20-%20IR.pdf
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spelling	my-upm-ir.711702019-08-29T08:26:38Z Design of robust and fragile image watermarking system for copyright protection and authentication using lifting wavelet transform and bivariate empirical mode decomposition techniques 2017-04 Abbas, Nidaa Hasan In this thesis, a dual purpose watermarking system is designed that satisfy both robustness and fragility, and thus combining copyright protection and tamper proofing simultaneously without significantly degrading each other. The proposed copyright scheme is new and effective. Two transforms which are; lifting wavelet transform (LWT) and bivariate empirical mode decomposition (BEMD), are used to decompose the original image to provide flexibility in choosing the robust frequency subband of the original image. LWT, is chosen as it is fast and keeps the integrity of the retrieved watermark. While BEMD could sift the image from the most robust to the least sensitive (fragile) frequency bands. This property is exploited in this thesis to embed the watermark in the robust part of BEMD which is the residue (r). To ensure the integrity and authenticity of digital images, a wide variety of authentication schemes have been proposed in the literature to detect image tampering. However, most of the existing schemes either fail to address this issue or use inaccurate method to evaluate the system performance. For this reason, a procedure to generate a new type of fragile watermark that can detect any tampering is developed in this thesis. The most sensitive subbands of the BEMD which are Intrinsic Mode Function (IMFs) are used to derive and embed the watermark bits in the frequency domain and further processed to increase the security and the ability to detect any alteration. Another watermark is generated and embedded in the spatial domain using block wise method and the Least Significant Bits (LSBs) insertion. The dual-purpose scheme is obtained by combining both the copyright protection and image authentication schemes and has been subjected to robust and fragile attacks. The results demonstrated that the performance of the scheme remains at par or only degrade at an acceptable level after inserting the dual watermarks. The obtained visual quality, Peak Signal to Noise Ratio (PSNR), is greater than 48dB and the Normalised Cross Correlation (NCC) is greater than 0.97 while the tampering detection rate (AV) is greater than 94%. Data encryption (Computer science) Computer security 2017-04 Thesis http://psasir.upm.edu.my/id/eprint/71170/ http://psasir.upm.edu.my/id/eprint/71170/1/FK%202017%2047%20-%20IR.pdf text en public doctoral Universiti Putra Malaysia Data encryption (Computer science) Computer security
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
topic	Data encryption (Computer science) Computer security
spellingShingle	Data encryption (Computer science) Computer security Abbas, Nidaa Hasan Design of robust and fragile image watermarking system for copyright protection and authentication using lifting wavelet transform and bivariate empirical mode decomposition techniques
description	In this thesis, a dual purpose watermarking system is designed that satisfy both robustness and fragility, and thus combining copyright protection and tamper proofing simultaneously without significantly degrading each other. The proposed copyright scheme is new and effective. Two transforms which are; lifting wavelet transform (LWT) and bivariate empirical mode decomposition (BEMD), are used to decompose the original image to provide flexibility in choosing the robust frequency subband of the original image. LWT, is chosen as it is fast and keeps the integrity of the retrieved watermark. While BEMD could sift the image from the most robust to the least sensitive (fragile) frequency bands. This property is exploited in this thesis to embed the watermark in the robust part of BEMD which is the residue (r). To ensure the integrity and authenticity of digital images, a wide variety of authentication schemes have been proposed in the literature to detect image tampering. However, most of the existing schemes either fail to address this issue or use inaccurate method to evaluate the system performance. For this reason, a procedure to generate a new type of fragile watermark that can detect any tampering is developed in this thesis. The most sensitive subbands of the BEMD which are Intrinsic Mode Function (IMFs) are used to derive and embed the watermark bits in the frequency domain and further processed to increase the security and the ability to detect any alteration. Another watermark is generated and embedded in the spatial domain using block wise method and the Least Significant Bits (LSBs) insertion. The dual-purpose scheme is obtained by combining both the copyright protection and image authentication schemes and has been subjected to robust and fragile attacks. The results demonstrated that the performance of the scheme remains at par or only degrade at an acceptable level after inserting the dual watermarks. The obtained visual quality, Peak Signal to Noise Ratio (PSNR), is greater than 48dB and the Normalised Cross Correlation (NCC) is greater than 0.97 while the tampering detection rate (AV) is greater than 94%.
format	Thesis
qualification_level	Doctorate
author	Abbas, Nidaa Hasan
author_facet	Abbas, Nidaa Hasan
author_sort	Abbas, Nidaa Hasan
title	Design of robust and fragile image watermarking system for copyright protection and authentication using lifting wavelet transform and bivariate empirical mode decomposition techniques
title_short	Design of robust and fragile image watermarking system for copyright protection and authentication using lifting wavelet transform and bivariate empirical mode decomposition techniques
title_full	Design of robust and fragile image watermarking system for copyright protection and authentication using lifting wavelet transform and bivariate empirical mode decomposition techniques
title_fullStr	Design of robust and fragile image watermarking system for copyright protection and authentication using lifting wavelet transform and bivariate empirical mode decomposition techniques
title_full_unstemmed	Design of robust and fragile image watermarking system for copyright protection and authentication using lifting wavelet transform and bivariate empirical mode decomposition techniques
title_sort	design of robust and fragile image watermarking system for copyright protection and authentication using lifting wavelet transform and bivariate empirical mode decomposition techniques
granting_institution	Universiti Putra Malaysia
publishDate	2017
url	http://psasir.upm.edu.my/id/eprint/71170/1/FK%202017%2047%20-%20IR.pdf
_version_	1747812983921180672

Design of robust and fragile image watermarking system for copyright protection and authentication using lifting wavelet transform and bivariate empirical mode decomposition techniques

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