Abstract—Medical image security and privacy are two issues that are interrelated and highly sensitive. Protecting the privacy and data integrity has to be done without comprising on the structural integrity of the data. Watermarking and encryption have served the purpose of data security for long. In this research work, a dual security approach is employed where watermarking and encryption is used to provide two layers of security. The watermarking is proposed to be implemented using a hybrid approach which encompasses Discrete Wavelet Transforms (DWT), Lifted Wavelet Transforms (LWT) and Singular Value Decomposition (SVD) techniques. Bacterial Foraging Optimization (BFOA) is used for optimizing the watermarking parameters. The encryption is proposed to be effected using RSA and AES encryption algorithms. A Graphical User Interface (GUI) which enables the user to have ease of operation in loading the image, watermark it, encrypt it and also retrieve the original image whenever necessary is also designed and presented in this paper. The robustness and the integrity of the watermark are tested by measuring different performance parameters and subjecting it to various attacks.

Index Terms—DWT, LWT, SVD, BFOA, AES, RSA, GUI.

C. H. Venugopal Reddy is with the Department of ECE, Nalanda Institute of Engineering and Technology, Guntur, A.P, India.
P. Siddaiah is with the Acharya Nagarjuna University College of Engineering and Technology, Guntur, A.P, India.

Cite:C. H. Venugopal Reddy, P. Siddaiah, "Comparative Analysis of Dual Secure Based Medical Image Watermarking Technique to Increase Security of Watermark Data Using BFOA," International Journal of Computer and Communication Engineering vol. 5, no. 6, pp. 381-397, 2016.