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
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Online Access:http://eprints.utm.my/id/eprint/86198/1/NurAfezaAjirahMFC2017.pdf
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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