Reversible Data Hiding Scheme with High Embedding Capacity Using Semi-Indicator-Free Strategy

Table 3

Simulation results for various test images and codebook sizes.

Images	Codebook sizes/VQ BR (in bpp)
	128/0.438	256/0.50	512/0.563	1024/0.625
	𝑁𝑧/𝑠
	3/4	3/5	4/5	5/5
	ER
	BR (in bpp)
	EC (in bits)
Airplane	0.454	0.466	0.438	0.398
	0.446	0.509	0.574	0.640
	53144	62095	65905	66785
Lena	0.478	0.471	0.441	0.403
	0.442	0.505	0.570	0.637
	55396	62350	65955	67390
Pepper	0.483	0.483	0.456	0.412
	0.442	0.504	0.570	0.636
	55928	63810	68030	68685
Boat	0.423	0.380	0.354	0.318
	0.446	0.509	0.579	0.650
	49432	50775	53720	54155
Sailboat	0.435	0.416	0.391	0.344
	0.446	0.509	0.576	0.645
	50792	55515	59120	58110
Tiffany	0.492	0.521	0.473	0.422
	0.441	0.503	0.569	0.635
	56860	68625	70475	70220
House	0.394	0.370	0.345	0.314
	0.449	0.513	0.584	0.654
	46392	49780	52745	53840
Elaine	0.498	0.484	0.460	0.412
	0.440	0.503	0.568	0.634
	57492	63775	68445	68385