Digital image watermarking by using intermediate significant bits in gray scale images

The rapid growths of the computer technologies have been increased over the last half century in terms of amount and complexity of data. Also, access to the data has become much easier due to rapid growth of the networks such as Internet. Furthermore, most of the people use image to represent inform...

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Main Author:	Sharifara, Ali
Format:	Thesis
Language:	English
Published:	2012
Subjects:	QA76 Computer software
Online Access:	http://eprints.utm.my/id/eprint/29528/5/AliSharifaraMFSKSM2012.pdf
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id	my-utm-ep.29528
record_format	uketd_dc
spelling	my-utm-ep.295282018-05-27T06:54:47Z Digital image watermarking by using intermediate significant bits in gray scale images 2012 Sharifara, Ali QA76 Computer software The rapid growths of the computer technologies have been increased over the last half century in terms of amount and complexity of data. Also, access to the data has become much easier due to rapid growth of the networks such as Internet. Furthermore, most of the people use image to represent information and it is transferred throughout the internet. Digital watermarking techniques are used to protect the copyrights of multimedia data by embedding secret information inside them, for example, embedding in images, audios, or videos. Digital Image watermarking also has been used to detect original images against forged images by embedding an evidence of the owner of image. Digital Image watermarking can be categorized into two domains namely; spatial, and frequency domains. The former has been chosen for the current research and some remaining problems have been studied such as imperceptibility, security, and robustness of watermarked image. A repeated method is proposed to solve the problem of robustness, and a Zig-zag algorithm is also recommended to change the order of embedding in watermarked image. Furthermore, the proposed method aims to embed watermark in different bit planes of host image which can improve both the visual quality and robustness. To evaluate the proposed technique, some attacks have been applied for the approach and the experimental results have shown that the proposed technique successfully withstood against most of the attacks, and at the same time preserved the watermarked image quality. 2012 Thesis http://eprints.utm.my/id/eprint/29528/ http://eprints.utm.my/id/eprint/29528/5/AliSharifaraMFSKSM2012.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Computer Science and Information Systems Faculty of Computer Science and Information Systems
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QA76 Computer software
spellingShingle	QA76 Computer software Sharifara, Ali Digital image watermarking by using intermediate significant bits in gray scale images
description	The rapid growths of the computer technologies have been increased over the last half century in terms of amount and complexity of data. Also, access to the data has become much easier due to rapid growth of the networks such as Internet. Furthermore, most of the people use image to represent information and it is transferred throughout the internet. Digital watermarking techniques are used to protect the copyrights of multimedia data by embedding secret information inside them, for example, embedding in images, audios, or videos. Digital Image watermarking also has been used to detect original images against forged images by embedding an evidence of the owner of image. Digital Image watermarking can be categorized into two domains namely; spatial, and frequency domains. The former has been chosen for the current research and some remaining problems have been studied such as imperceptibility, security, and robustness of watermarked image. A repeated method is proposed to solve the problem of robustness, and a Zig-zag algorithm is also recommended to change the order of embedding in watermarked image. Furthermore, the proposed method aims to embed watermark in different bit planes of host image which can improve both the visual quality and robustness. To evaluate the proposed technique, some attacks have been applied for the approach and the experimental results have shown that the proposed technique successfully withstood against most of the attacks, and at the same time preserved the watermarked image quality.
format	Thesis
qualification_level	Master's degree
author	Sharifara, Ali
author_facet	Sharifara, Ali
author_sort	Sharifara, Ali
title	Digital image watermarking by using intermediate significant bits in gray scale images
title_short	Digital image watermarking by using intermediate significant bits in gray scale images
title_full	Digital image watermarking by using intermediate significant bits in gray scale images
title_fullStr	Digital image watermarking by using intermediate significant bits in gray scale images
title_full_unstemmed	Digital image watermarking by using intermediate significant bits in gray scale images
title_sort	digital image watermarking by using intermediate significant bits in gray scale images
granting_institution	Universiti Teknologi Malaysia, Faculty of Computer Science and Information Systems
granting_department	Faculty of Computer Science and Information Systems
publishDate	2012
url	http://eprints.utm.my/id/eprint/29528/5/AliSharifaraMFSKSM2012.pdf
_version_	1747815702394306560

Digital image watermarking by using intermediate significant bits in gray scale images

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