DWT based watermarking approach for medical image authentication

摘要

Digital Watermarking describes methods and technologies that hide information in digital media. Watermarking technique can be effectively applied to medical images. Watermarking technique has recently developed for medical image watermarking and it can be used to embed the patient information into medical image and can be efficiently extract back the information. This medical image watermark technique can avoid unnecessary modification by unauthorized person. In this paper Discrete Wavelet Transform based watermarking scheme is used for medical image watermarking and is simulated using MATLAB software. The proposed method provides performance metrics MSE and PSNR values better than the existing methods.