Adaptive Watermarking Scheme Using Biased Shift of Quantization Index

Table 3

Comparison to Yasein’s scheme.

Attack		Error ratio (%)
		Yasein's	Ours
JPEG quality (%)	60	0	0
	40	1	0
	20	4	0.8
JPEG2000 (bpp)	0.5	0.5	0
	0.4	0.7	0
	0.2	14	3.5