RISWMCI: Robust Imperceptible Semi-blind Watermarking Scheme for Medical Color Images
M. Sajeer, Ashutosh Mishra · 2023
Color medical images are widely used in medical diagnosis for e-healthcare applications, and preserving their integrity and authenticity is a big problem. This paper presents a robust and imperceptible semi-blind color medical image watermarking scheme, which can be used for e-healthcare applications. The method uses a hybrid technique using Discrete Cosine Transform-Lower Upper factorization. The performance is evaluated using different assessment matrices for various test color images from distinct modalities. The method obtained an average PSNR of 51.99 dB, an SSIM of 0.9991, and an NC of an ideal value of 1. Its average embedding and extraction time are 0.3435 seconds, and 0.2223 seconds, respectively. The approach performs well in all respects when compared to cutting-edge methods.