A Theoretical Approach to Secure Medical Images by Combining Cryptography and Watermarking Techniques

Medical Imaging has remoulded the Healthcare system. It has become a vital tool for rapid diagnosis with visualisation of the interior of the body. Telemedicine is that the remote delivery of healthcare services over the telecommunication infrastructure. This paper aims at providing security to the medical images transmitted over public networks. It addresses the following traits of Medical Image Security namely: Confidentiality, Patient's control, Data Integrity and Consent Exception .The objective of the paper roots on providing theoretical ideas by combining Watermarking schemes with Cryptography techniques for developing enhanced security algorithms for transaction of medical images. The various parameters used for the measurement of the performance and effectiveness of the proposed algorithms such as Entropy, Number of Pixel Change Rate, Unified Average Change in Intensity, Correlation Coefficient, Mean Squared Error and Peak Signal to Noise Ratio are discussed. This paper provides a road map in constructing new algorithm by combining cryptography and watermarking technique for secure transaction of medical.