Visible Watermarking Technique Based on Human Visual System for Single Sensor Digital Cameras

Figure 11

Attacked visible watermarked natural images (Figure 5(c)), generated by [13, 14] and proposed algorithm. ((a)–(c)) Compressed watermarked images by JPEG standard, ((d)–(f)) high contrast, ((g)–(i)) low contrast, ((j)–(l)) Gaussian low-pass filter, ((m)–(o)) high illumination, ((p)–(r)) low illumination, and ((s)–(u)) Gaussian noise contamination.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)

(k)

(l)

(m)

(n)

(o)

(p)

(q)

(r)

(s)

(t)

(u)