Steganography for securing image data using hybrid SLT and DCT

This study proposes a hybrid technique in securing image data that will be applied in telemedicine in future. Based on the web-based ENT diagnosis system using Virtual Hospital Server (VHS), patients are able to submit their physiological signals and multimedia data through the internet. In telemed...

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Main Author:	Rachmawanto, Eko Hari
Format:	Thesis
Language:	English English
Published:	2012
Subjects:	Q Science (General) QA Mathematics
Online Access:	http://eprints.utem.edu.my/id/eprint/28232/1/Steganography%20for%20securing%20image%20data%20using%20hybrid%20SLT%20and%20DCT.pdf http://eprints.utem.edu.my/id/eprint/28232/2/Steganography%20for%20securing%20image%20data%20using%20hybrid%20SLT%20and%20DCT.pdf
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id	my-utem-ep.28232
record_format	uketd_dc
spelling	my-utem-ep.282322024-12-13T08:55:30Z Steganography for securing image data using hybrid SLT and DCT 2012 Rachmawanto, Eko Hari Q Science (General) QA Mathematics This study proposes a hybrid technique in securing image data that will be applied in telemedicine in future. Based on the web-based ENT diagnosis system using Virtual Hospital Server (VHS), patients are able to submit their physiological signals and multimedia data through the internet. In telemedicine system, image data need more secure to protect data patients in web. Cryptography and steganography are techniques that can be used to secure image data implementation. In this study, steganography method hos been applied using hybrid between Discrete Cosine Transform (OCT) and Slantlet Transform (SLT) technique. DCT is calculated on blocks of independent pixels, a coding error causes discontinuity between blocks resulting in annoying blocking artifact. While SLT applies on entire image and offers better energy compaction compare to OCT without any blocking artifact. Furthermore, SLT splits component into numerous frequency bands called sub bands or octave bands. It is known that SLT is a better than DWT based scheme and better time localization. Weakness of DCT is eliminated by SLT that employ an improved version of the usual Discrete Wavelet Transform (DWT). Some comparison of technique is included in this study to show the capability of the hybrid SLT and OCT. Experimental results show that optimum imperceptibility is achieved. 2012 Thesis http://eprints.utem.edu.my/id/eprint/28232/ http://eprints.utem.edu.my/id/eprint/28232/1/Steganography%20for%20securing%20image%20data%20using%20hybrid%20SLT%20and%20DCT.pdf text en public http://eprints.utem.edu.my/id/eprint/28232/2/Steganography%20for%20securing%20image%20data%20using%20hybrid%20SLT%20and%20DCT.pdf text en validuser https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=77731 mphil masters Universiti Teknikal Malaysia Melaka Faculty of Information and Communication Technology Abdollah, Mohd Faizal
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
advisor	Abdollah, Mohd Faizal
topic	Q Science (General) QA Mathematics
spellingShingle	Q Science (General) QA Mathematics Rachmawanto, Eko Hari Steganography for securing image data using hybrid SLT and DCT
description	This study proposes a hybrid technique in securing image data that will be applied in telemedicine in future. Based on the web-based ENT diagnosis system using Virtual Hospital Server (VHS), patients are able to submit their physiological signals and multimedia data through the internet. In telemedicine system, image data need more secure to protect data patients in web. Cryptography and steganography are techniques that can be used to secure image data implementation. In this study, steganography method hos been applied using hybrid between Discrete Cosine Transform (OCT) and Slantlet Transform (SLT) technique. DCT is calculated on blocks of independent pixels, a coding error causes discontinuity between blocks resulting in annoying blocking artifact. While SLT applies on entire image and offers better energy compaction compare to OCT without any blocking artifact. Furthermore, SLT splits component into numerous frequency bands called sub bands or octave bands. It is known that SLT is a better than DWT based scheme and better time localization. Weakness of DCT is eliminated by SLT that employ an improved version of the usual Discrete Wavelet Transform (DWT). Some comparison of technique is included in this study to show the capability of the hybrid SLT and OCT. Experimental results show that optimum imperceptibility is achieved.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Rachmawanto, Eko Hari
author_facet	Rachmawanto, Eko Hari
author_sort	Rachmawanto, Eko Hari
title	Steganography for securing image data using hybrid SLT and DCT
title_short	Steganography for securing image data using hybrid SLT and DCT
title_full	Steganography for securing image data using hybrid SLT and DCT
title_fullStr	Steganography for securing image data using hybrid SLT and DCT
title_full_unstemmed	Steganography for securing image data using hybrid SLT and DCT
title_sort	steganography for securing image data using hybrid slt and dct
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty of Information and Communication Technology
publishDate	2012
url	http://eprints.utem.edu.my/id/eprint/28232/1/Steganography%20for%20securing%20image%20data%20using%20hybrid%20SLT%20and%20DCT.pdf http://eprints.utem.edu.my/id/eprint/28232/2/Steganography%20for%20securing%20image%20data%20using%20hybrid%20SLT%20and%20DCT.pdf
_version_	1818612055769350144

Steganography for securing image data using hybrid SLT and DCT

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