Survey on Reversible Watermarking Techniques of Echocardiography

Figure 7

Images utilized for the experiment [28]. (a) Ultrasound 1 (888 × 666 pixels), (b) ultrasound 2 (888 × 666 pixels), (c) ultrasound 3 (704 × 576 pixels), and (d) ultrasound 4 (640 × 480 pixels).

(a)

(b)

(c)

(d)