A Robust Authentication Algorithm for Medical Images Based on Fractal Brownian Model and Visual Cryptography

Table 2

Performance comparison of different algorithms under various attacks [1].

Attacks	Hsieh and Huang’s scheme [8]	Hsu and Hou’s scheme [13]	Tiankai’s scheme [17]	Proposed scheme
Sharpening	0.752	0.819	0.9561	0.9707
Median filtering	0.843	0.938	0.9775	0.9766
Resizing	0.733	0.887	0.9521	0.9980
Noise addition	0.723	0.761	0.9854	0.9863
JPEG	0.845	0.956	0.9912	0.9961