An improved wavelet digital watermarking software implementation

There are quite a number of researches in propOSll1g digital image watermarking using Discrete Wavelet Transform (DWT). However, it is clearly observed that each of them is individually distinctive in terms of its scopes and applications [1][2][3]. The proposed system was thoroughly explained in th...

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Main Authors: Khalifa, Othman Omran, Yusof, Yusnita
Format: Book Chapter
Language:English
Published: IIUM Press 2011
Subjects:
Online Access:http://irep.iium.edu.my/21553/
http://irep.iium.edu.my/21553/1/Chapter_19.pdf
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author Khalifa, Othman Omran
Yusof, Yusnita
author_facet Khalifa, Othman Omran
Yusof, Yusnita
author_sort Khalifa, Othman Omran
building IIUM Repository
collection Online Access
description There are quite a number of researches in propOSll1g digital image watermarking using Discrete Wavelet Transform (DWT). However, it is clearly observed that each of them is individually distinctive in terms of its scopes and applications [1][2][3]. The proposed system was thoroughly explained in this chapter. This includes general work flow, proposed algorithms for both original method and improved method, which were named as subband matching and selective subband matching, respectively and various attacks performed for evaluation. Modification was made to the algorithms where only selected matching subbands were used in embedding and extracting the watermark in this improved method. These methods were compared and tested against attacks in MATLAB and by using standard benchmark, Stirmark. Experimental results of the proposed methods' performance were analyzed using Peak Signal to Noise Ratio (PSNR) calculations and Structural SIMilarity (SSIM) index for watermark imperceptibility and robustness, respectively. The improvement could be seen in quality of the watermarked image (imperceptibility) and of extracted watermark (robustness).
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institution International Islamic University Malaysia
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language English
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spelling iium-215532020-11-11T00:41:53Z http://irep.iium.edu.my/21553/ An improved wavelet digital watermarking software implementation Khalifa, Othman Omran Yusof, Yusnita TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices There are quite a number of researches in propOSll1g digital image watermarking using Discrete Wavelet Transform (DWT). However, it is clearly observed that each of them is individually distinctive in terms of its scopes and applications [1][2][3]. The proposed system was thoroughly explained in this chapter. This includes general work flow, proposed algorithms for both original method and improved method, which were named as subband matching and selective subband matching, respectively and various attacks performed for evaluation. Modification was made to the algorithms where only selected matching subbands were used in embedding and extracting the watermark in this improved method. These methods were compared and tested against attacks in MATLAB and by using standard benchmark, Stirmark. Experimental results of the proposed methods' performance were analyzed using Peak Signal to Noise Ratio (PSNR) calculations and Structural SIMilarity (SSIM) index for watermark imperceptibility and robustness, respectively. The improvement could be seen in quality of the watermarked image (imperceptibility) and of extracted watermark (robustness). IIUM Press 2011 Book Chapter PeerReviewed application/pdf en http://irep.iium.edu.my/21553/1/Chapter_19.pdf Khalifa, Othman Omran and Yusof, Yusnita (2011) An improved wavelet digital watermarking software implementation. In: Multimedia Encryption, Transmission and Authentication. IIUM Press, Kuala Lumpur, pp. 175-181. ISBN 978-967-418-160-4 http://rms.research.iium.edu.my/bookstore/default.aspx
spellingShingle TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
Khalifa, Othman Omran
Yusof, Yusnita
An improved wavelet digital watermarking software implementation
title An improved wavelet digital watermarking software implementation
title_full An improved wavelet digital watermarking software implementation
title_fullStr An improved wavelet digital watermarking software implementation
title_full_unstemmed An improved wavelet digital watermarking software implementation
title_short An improved wavelet digital watermarking software implementation
title_sort improved wavelet digital watermarking software implementation
topic TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
url http://irep.iium.edu.my/21553/
http://irep.iium.edu.my/21553/
http://irep.iium.edu.my/21553/1/Chapter_19.pdf