Thursday 23rd of November 2017
 

Digital Watermarking for Image Authentication Based on Combined DCT, DWT and SVD Transformation


Mohammad Ibrahim Khan, Md. Maklachurrahman and Md. Iqbal Hasansarker

Digital content can frequently copied by unauthorized person and claim to his ownership. But we dont know who the actual owner of that content is. Digital Watermarking is an important issue to solve this kind of problem. This paper presents a hybrid digital image watermarking based on Discrete Wavelet Transform (DWT), Discrete Cosine Transform (DCT) and Singular Value Decomposition (SVD) in a zigzag order. From DWT we choose the high band to embed the watermark that facilities to add more information, gives more invisibility and robustness against some attacks. Such as geometric attack. Zigzag method is applied to map DCT coefficients into four quadrants that represent low, mid and high bands. Finally, SVD is applied to each quadrant.

Keywords: Watermarking, DWT, DCT, SVD, Zigzag method

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ABOUT THE AUTHORS

Mohammad Ibrahim Khan
Dr. Mohammad Ibrahim Khan received the B.S. degree in Electrical and Electronic Engineering from Bangladesh University of Engineering and Technology (BUET), Bangladesh in 1999. He received M.S. degree in Computer Science and Engineering from the same University in 2002. He received his Ph.D. degree in Computer Science and Engineering from Jahangirnagar University in 2010. Since 1999, he has been serving as a faculty member in the Department of Computer Science and Engineering at Chittagong University of Engineering& Technology (CUET), Chittagong, Bangladesh. His research interest includes Digital Image Processing, Graph Theory, Cryptography, Digital Watermarking, Multimedia Systems, and Digital Signal Processing.

Md. Maklachurrahman
Md. MaklachurRahmanwill receive B.Sc.degree in Computer Science and Engineering (CSE) from Chittagong Universityof Engineering and Technology (CUET), Chittagong, Bangladesh in July, 2013. Currently he is a final year student Dept. of CSE.His researchinterest includes Digital Image Processing, Multimedia Security,ArtificialIntelligence, Digital Watermarking and Software Engineering.

Md. Iqbal Hasansarker
Md. Iqbal Hasan Sarker received the B.Sc. degree in Computer Science & Engineering from Chittagong University of Engineering &Technology (CUET), Bangladesh in 2009. Currently, he is pursuingM.Sc. in Computer Science & Engineering in the same University. Since 2010, he has been serving as a faculty member in the same department and university. His research interest includesDigital Watermarking, Computer Vision, Digital Image Processing, Cryptography and Data mining.


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