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New watermarking methods for digital images.
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Abstract |
Abstract
The phenomenal spread of the Internet places an enormous demand on content-ownership-validation. In this thesis, four new image-watermarking methods are presented. One method is based on discrete-wavelet-transformation (DWT) only while the rest are based on DWT and singular-value-decomposition (SVD) ensemble. The main target for this thesis is to reach a new blind-watermarking-method. Method IV presents such watermark using QR-codes. The use of QR-codes in watermarking is novel. The choice of such application is based on the fact that QR-Codes have errors self-correction-capability of 5% or higher which satisfies the nature of digital-image-processing. Results show that the proposed-methods introduced minimal distortion to the watermarked images as compared to other methods and are robust against JPEG, resizing and other attacks. Moreover, watermarking-method-II provides a solution to the detection of false watermark in the literature. Finally, method IV presents a new QR-code guided watermarking-approach that can be used as a steganography as well. --Leaf ii. |
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Persons |
Persons
Author (aut): Islam, Md. Wahedul
Thesis advisor (ths): Zahir, Saif
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Department
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DOI |
DOI
https://doi.org/10.24124/2013/bpgub896
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Degree granting institution (dgg): University of Northern British Columbia
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Library of Congress Classification |
Library of Congress Classification
TA1637 .I85 2012
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Extent
Number of pages in document: 106
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ISBN |
ISBN
978-0-494-94112-6
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Use and Reproduction |
Use and Reproduction
Copyright retained by the author.
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Rights Statement
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unbc_16285.pdf5.14 MB
3738-Extracted Text.txt161.58 KB
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Language |
English
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New watermarking methods for digital images.
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