Security of E-healthcare data using DWT-SVD based Hybrid watermarking

Abstract

Due to advancement in technology nowadays, it is easy to manipulate and produce illegal multimedia data. As a consequent, different strategy of information security has been created by the researchers and specialists every day. Digital watermarking is one of the various techniques used these days to secure the data in efficient manner. In this data has been embedded using a suitable algorithm and watermark. Again at the receiving end watermark has been extracted for the reconstruction of original data. Watermarking can be done using spatial domain or transform domain. In this paper watermarking has been done using transform domain techniques on digital images. The proposed method includes DWT-SVD hybrid watermarking technique in addition to watermark generation. This method has been performed on medical images for securing the data. The original image is firstly processed by using DWT followed by SVD. The results have been tested by applying various attacks for the robustness of algorithm. The quality of an image can be evaluated by different parameters as PSNR, SNR and SSIM. The proposed method achieved a good value of PSNR and SSIM.