A Hybrid Medical Images Watermarking Technique Using DWT and DCT

Medical images, such as X-rays, MRI scans, and CT scans, play an important role in diagnosing and treating various diseases. However, the sensitive nature of these images requires protection against unauthorized use and distribution. This article presents a novel approach for embedding hospital logos, patient information, and hospital/doctor details into medical images using a combination of wavelet transform and discrete cosine transform, To ensure enhanced security and robustness, we hash the watermark data using the MD5 algorithm before the embedding. Experimental results demonstrate the exceptional performance of the proposed technique, with a peak signal-to-noise ratio (PSNR) exceeding 50 dB, and very good robustness against attacks.