Adaptive and separable multiary reversible data hiding in encryption domain

EURASIP Journal on Image and Video Processing

Table 3 Comparison among four methods in terms of PSNR and maximum ER

Method	Parameter setting	Lena		Couple		Boat		Man		Peppers		Baboon
Method	Parameter setting	PSNR (dB)	ER (bpp)	PSNR (dB)	ER (bpp)	PSNR (dB)	ER (bpp)	PSNR (dB)	ER (bpp)	PSNR (dB)	ER (bpp)	PSNR (dB)	ER (bpp)
Li et al. (2018)	T = 1	51.17	0.338	49.83	0.224	48.36	0.560	50.77	0.586	50.20	0.260	n/a	n/a
Xu and Su (2019)	β = 0	31.55	0.221	28.06	0.155	29.27	0.154	29.97	0.194	27.36	0.196	24.80	0.078
Xu and Su (2019)	β = 1	30.88	0.377	27.22	0.279	28.72	0.272	29.38	0.340	25.38	0.342	24.47	0.144
Xu and Wang (2016)	T_n = − 1 T_p = 0	49.99	0.176	49.88	0.109	49.86	0.147	49.77	0.124	49.83	0.141	49.58	0.056
	T_n = − 1 T_p = 1	45.98	0.279	46.29	0.164	45.83	0.223	45.88	0.171	45.85	0.200	45.60	0.083
	T_n = − 2 T_p = 1	44.88	0.345	43.98	0.213	45.86	0.266	44.15	0.213	44.23	0.252	43.84	0.103
Proposed	Q = 2	58.68	0.176	60.70	0.111	60.73	0.111	59.17	0.158	59.51	0.146	63.65	0.056
	Q = 3	53.46	0.279	55.49	0.176	55.52	0.175	53.94	0.250	54.28	0.231	58.43	0.089
	Q = 4	50.24	0.352	52.27	0.222	52.30	0.221	50.74	0.316	51.07	0.292	55.19	0.113