Fig. 3From: A robust encryption watermarking algorithm for medical images based on ridgelet-DCT and THM double chaosThe results under different attacks: (a) The brain image; (b) Gaussian noise attack with 1%; (c) JPEG compression attack with 4%; (d) Median filter attack with [3 × 3] and 10 times; (e) Rotation attack with clockwise 5◦; (f) Translation attack with left 5% (g) Translation attack with down 7%; (h) Scaling attack with 95%; (i) Cropping attack with Y direction 10%Back to article page