AN EVALUATION OF DWT-SVD AND DCT-SVD IN NON-BLIND IMAGE WATERMARKING / JABANI JOSEPH; SUPERVISOR: ASST. PROF. DR. MARY AGOYI

Yazar: Katkıda bulunan(lar):Dil: İngilizce 2022Tanım: 71 sheets; 31 cm. Includes CDİçerik türü:
  • text
Ortam türü:
  • unmediated
Taşıyıcı türü:
  • volume
Konu(lar): Tez notu: Thesis (MSc) - Cyprus International University. Institute of Graduate Studies and Research Information Technologies Department Özet: ABSTRACT One of the most essential factors in resolving the problem of copyright infringement, illegal modification, and distribution of intellectual property is the originality of digital content. Watermarking can help with these issues. The process of digital watermarking involves embedding a watermark signal into a cover content, also known as original content. Digital watermarking algorithms must improve as the internet grows and technology advances in order to safeguard content from unauthorized modifications and attacks that are always being invented. In this study, a robust non-blind image watermarking system based on a hybrid DWT-SVD (Discrete wavelet Transform with Singular Value Decomposition) is studied and compared to DCT-SVD (Discrete Cosine Transform with Singular Value Decomposition) in this research. The effect of increasing the watermark strength in the cover image was analyzed to test for imperceptibility and resistance. After examining the strengths and limitations of the two algorithms in question, they were exposed to a variety of attacks.
Materyal türü: Thesis
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Materyal türü Geçerli Kütüphane Koleksiyon Yer Numarası Durum Notlar İade tarihi Barkod Materyal Ayırtmaları
Thesis Thesis CIU LIBRARY Tez Koleksiyonu Tez Koleksiyonu YL 2470 J67 2022 (Rafa gözat(Aşağıda açılır)) Kullanılabilir Information Technologies Department T2783
Suppl. CD Suppl. CD CIU LIBRARY Görsel İşitsel YL 2470 J67 2022 (Rafa gözat(Aşağıda açılır)) Kullanılabilir Information Technologies Department CDT2783
Toplam ayırtılanlar: 0

Thesis (MSc) - Cyprus International University. Institute of Graduate Studies and Research Information Technologies Department

Includes bibliography (sheets 66-71)

ABSTRACT One of the most essential factors in resolving the problem of copyright infringement, illegal modification, and distribution of intellectual property is the originality of digital content. Watermarking can help with these issues. The process of digital watermarking involves embedding a watermark signal into a cover content, also known as original content. Digital watermarking algorithms must improve as the internet grows and technology advances in order to safeguard content from unauthorized modifications and attacks that are always being invented. In this study, a robust non-blind image watermarking system based on a hybrid DWT-SVD (Discrete wavelet Transform with Singular Value Decomposition) is studied and compared to DCT-SVD (Discrete Cosine Transform with Singular Value Decomposition) in this research. The effect of increasing the watermark strength in the cover image was analyzed to test for imperceptibility and resistance. After examining the strengths and limitations of the two algorithms in question, they were exposed to a variety of attacks.

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