ABSTRACT
ROBUST DATA HIDING SCHEME WITH TURBO CODES
Ü / NAL, BariS
M.S., Department of Electrical And Electronics Engineering
Supervisor: Prof. Dr. Rü / yal ERGÜ / L
December 2005, 127 pages
This study describes the design and implementation of a robust data hiding
algorithm which is provided by turbo codes. As the digital technology grows up, it
is getting easy to copy and distribute multimedia products without getting legal
permission. This has forced researchers to study in digital watermarking areas.
Along with watermarking researches, data hiding studies have gained interest in the
last decade. Different watermark and data hiding algorithms have been proposed
considering different requirements and properties such as robustness, fidelity,
invisibility and data hiding capacity.
In this thesis, robustness of watermarking systems and fidelity requirement in
watermark models are considered and use of turbo codes is proposed with data
embedding systems to improve system performance in terms of robustness.
Fundamental watermarking algorithms in DCT domain are analyzed and simulated.
Their performances in terms of robustness are presented. Data hiding algorithm
which is based on projection and perturbation in transform domain is implemented
in visual C. Then turbo codes are applied to this algorithm to improve system
robustness. Improvement provided by turbo codes is demonstrated and compared
with other discussed watermarking systems.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/2/12606848/index.pdf |
| Date | 01 December 2005 |
| Creators | Unal, Baris |
| Contributors | Ergul, Ruyal |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for METU campus |
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