Reversible data hiding using least square predictor via the LASSO

EURASIP Journal on Image and Video Processing

Table 2 Comparison in terms of average PSNR(dB) for low embedding capacities(lower than 0.5 bpp)

Image	Sachnev et al.	Lee et al.	Dragoi and Coltuc	Proposed
Sailboat	42.06	43.59	43.32	44.10
Barbara	45.32	46.75	46.19	47.01
Baboon	37.60	38.48	38.32	38.69
Boat	42.45	43.92	44.28	44.64
Pepper	42.09	44.19	44.30	44.40
Lena	46.96	46.94	47.32	47.33
Goldhill	44.26	44.06	44.76	44.76
Couple	44.34	44.55	45.02	44.84
House	50.21	50.44	49.67	50.69
Airplane	50.80	49.91	49.89	50.78
Elanie	40.75	42.76	42.35	42.95
Cameraman	55.11	54.55	55.24	54.60
Pirate	39.57	39.77	41.38	39.94
Tiffany	47.80	48.30	47.84	48.33
Average	44.95	45.59	45.71	45.93
Average gain	0.982	0.344	0.226	—