Reversible data hiding using least square predictor via the LASSO

EURASIP Journal on Image and Video Processing

Table 3 Comparison in terms of average PSNR(dB) for high embedding capacities(higher than 0.5 bpp)

Image	Sachnev et al.	Lee et al.	Dragoi and Coltuc	Proposed
Sailboat	33.83	34.38	34.72	35.13
Barbara	34.64	38.56	37.87	39.14
Baboon	28.38	29.71	29.17	29.92
Boat	34.46	36.37	36.23	36.92
Pepper	34.17	36.56	35.69	36.88
Lena	39.32	39.60	39.69	40.02
Goldhill	36.16	36.21	36.57	36.73
Couple	36.08	36.82	37.08	37.04
House	39.15	40.27	40.53	40.57
Airplane	42.25	42.18	42.17	42.41
Elanie	32.26	34.72	34.10	35.02
Cameraman	48.29	49.03	48.98	49.37
Pirate	32.47	33.02	33.47	33.20
Tiffany	38.58	40.42	39.42	40.45
Average	36.43	37.70	37.55	38.06
Average gain	1.625	0.354	0.508	—