An Improved Imperceptibility and Robustness of 4x4 DCT-SVD Image Watermarking Using Modified Entropy

A digital protection against unauthorized distribution of digital multimedia is highly on demand. Digital watermarking is a defence in multimedia protection for authorized ownership. This paper proposes an improved watermarking based on 4×4 DCT-SVD blocks using modified entropy in image watermarking...

وصف كامل

محفوظ في:
التفاصيل البيبلوغرافية
المؤلفون الرئيسيون: Ernawan, Ferda, Ramalingam, Mritha, Sadiq, Ali Safa, Zuriani, Mustaffa
التنسيق: مقال
اللغة:English
منشور في: Universiti Teknikal Malaysia Melaka (UTeM) 2017
الموضوعات:
الوصول للمادة أونلاين:http://umpir.ump.edu.my/id/eprint/18618/1/2602-7025-1-SM.pdf
http://umpir.ump.edu.my/id/eprint/18618/
http://journal.utem.edu.my/index.php/jtec/article/view/2602
الوسوم: إضافة وسم
لا توجد وسوم, كن أول من يضع وسما على هذه التسجيلة!
المؤسسة: Universiti Malaysia Pahang
اللغة: English
الوصف
الملخص:A digital protection against unauthorized distribution of digital multimedia is highly on demand. Digital watermarking is a defence in multimedia protection for authorized ownership. This paper proposes an improved watermarking based on 4×4 DCT-SVD blocks using modified entropy in image watermarking. A modified entropy is used to select unnoticeable blocks. The proposed watermarking scheme utilizes the lowest entropy values to determine unnoticeable regions of the watermarked image. This paper investigates the relationship between U(2,1) and U(3,1) coefficients of the U matrix 4×4 DCT-SVD in image watermarking. The proposed watermarking scheme produces a great level of robustness and imperceptibility of the watermarked image against different attacks. The proposed scheme shows the improvement in terms of structural similarity index and normalized correlation of the watermarked image.