An improved scaling factor for robust digital image watermarking scheme using DWT and SVD

As the internet has becoming very popular for digital media sharing, the digital media is easy to be accessed, downloaded and vulnerable to image processing attacks. Digital watermarking is a technique used to secure information by embedding an additional information known as watermark into the orig...

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Main Author:	Noor Saaid, Nur Afeza Ajirah
Format:	Thesis
Language:	English
Published:	2017
Subjects:	QA75 Electronic computers Computer science
Online Access:	http://eprints.utm.my/id/eprint/86198/1/NurAfezaAjirahMFC2017.pdf
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id	my-utm-ep.86198
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spelling	my-utm-ep.861982020-08-30T09:05:15Z An improved scaling factor for robust digital image watermarking scheme using DWT and SVD 2017 Noor Saaid, Nur Afeza Ajirah QA75 Electronic computers. Computer science As the internet has becoming very popular for digital media sharing, the digital media is easy to be accessed, downloaded and vulnerable to image processing attacks. Digital watermarking is a technique used to secure information by embedding an additional information known as watermark into the original data. The proposed scheme is approach to improve scale factor for robust image watermarking using two level of Discrete Wavelet Transform with Singular Value Decomposition. The first and second level of DWT decomposition are performed on HL and HL1 sub band respectively. One of the main contribution of this proposed approach is the decomposition of host image using two level DWT decomposition. The aim of this project primarily is to enhance the robustness of watermarking techniques by obtaining the most optimize scaling factor which increased and control the strength of watermarked image. Scale factor is a coefficient that can influence the quality and robustness of watermarked image. To achieve the research objectives, three phases of research framework are fulfilled; First phase is the analysis on scaling factor, DWT and SVD, secondly is the watermark encoding and the generation of scale factor value and lastly is the evaluation of watermarked image quality and robustness based on the scale factor. The highest PSNR recorded is 69.2112 with best scale factor 0.01. The experimental result shows significant improvement on the quality and robustness of the watermarked image using this proposed scheme. 2017 Thesis http://eprints.utm.my/id/eprint/86198/ http://eprints.utm.my/id/eprint/86198/1/NurAfezaAjirahMFC2017.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:132394 masters Universiti Teknologi Malaysia, Faculty of Computing Faculty of Computing
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QA75 Electronic computers Computer science
spellingShingle	QA75 Electronic computers Computer science Noor Saaid, Nur Afeza Ajirah An improved scaling factor for robust digital image watermarking scheme using DWT and SVD
description	As the internet has becoming very popular for digital media sharing, the digital media is easy to be accessed, downloaded and vulnerable to image processing attacks. Digital watermarking is a technique used to secure information by embedding an additional information known as watermark into the original data. The proposed scheme is approach to improve scale factor for robust image watermarking using two level of Discrete Wavelet Transform with Singular Value Decomposition. The first and second level of DWT decomposition are performed on HL and HL1 sub band respectively. One of the main contribution of this proposed approach is the decomposition of host image using two level DWT decomposition. The aim of this project primarily is to enhance the robustness of watermarking techniques by obtaining the most optimize scaling factor which increased and control the strength of watermarked image. Scale factor is a coefficient that can influence the quality and robustness of watermarked image. To achieve the research objectives, three phases of research framework are fulfilled; First phase is the analysis on scaling factor, DWT and SVD, secondly is the watermark encoding and the generation of scale factor value and lastly is the evaluation of watermarked image quality and robustness based on the scale factor. The highest PSNR recorded is 69.2112 with best scale factor 0.01. The experimental result shows significant improvement on the quality and robustness of the watermarked image using this proposed scheme.
format	Thesis
qualification_level	Master's degree
author	Noor Saaid, Nur Afeza Ajirah
author_facet	Noor Saaid, Nur Afeza Ajirah
author_sort	Noor Saaid, Nur Afeza Ajirah
title	An improved scaling factor for robust digital image watermarking scheme using DWT and SVD
title_short	An improved scaling factor for robust digital image watermarking scheme using DWT and SVD
title_full	An improved scaling factor for robust digital image watermarking scheme using DWT and SVD
title_fullStr	An improved scaling factor for robust digital image watermarking scheme using DWT and SVD
title_full_unstemmed	An improved scaling factor for robust digital image watermarking scheme using DWT and SVD
title_sort	improved scaling factor for robust digital image watermarking scheme using dwt and svd
granting_institution	Universiti Teknologi Malaysia, Faculty of Computing
granting_department	Faculty of Computing
publishDate	2017
url	http://eprints.utm.my/id/eprint/86198/1/NurAfezaAjirahMFC2017.pdf
_version_	1747818502630146048

An improved scaling factor for robust digital image watermarking scheme using DWT and SVD

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