Reversible data hiding based on histogram and prediction error for sharing secret data

Cybersecurity

Table 5 The comparison of PSNR (dB) of the medical images between the proposed method and previous works

Image	\(k = 4\)			\(k = 5\)			\(k = 6\)
Image	Proposed scheme	Meng et al. (2021)	Yuan et al. (2016)	Proposed scheme	Meng et al. (2021)	Yuan et al. (2016)	Proposed scheme	Meng et al. (2021)	Yuan et al. (2016)
Hand	53.56	47.12	43.10	53.26	46.13	42.63	53.24	45.65	42.11
Chest	53.63	47.16	44.21	53.53	47.14	43.07	53.64	46.48	42.91
Head	51.35	49.02	44.52	51.56	46.15	43.89	51.52	47.17	42.73
Leg	52.70	48.38	43.05	52.56	47.16	44.05	52.23	47.13	42.67
Abdominal	53.63	47.16	44.21	51.56	46.15	43.89	53.63	47.16	44.21
Left Lower Leg	51.23	49.02	44.52	51.35	49.02	44.52	51.35	49.02	44.52
Lateral Neck	52.50	48.38	43.05	53.64	46.48	42.91	53.53	47.14	43.07
Right Knee	51.55	46.14	43.89	51.52	46.17	42.73	51.56	46.15	43.89
Left Wrist	52.56	49.06	44.05	51.35	49.02	44.52	51.35	49.05	44.52
Pelvis	52.64	46.48	42.91	52.70	46.38	43.01	52.70	46.44	43.05