Obtuse Angle Prediction and Factor Evaluation for Image Reversible Data Hiding

Table 11

Comparisons in view of PSNR (dB) for [32, 34, 37, 38], OAP-I, and OAP-II with the payload of 10000 bits.

Image	Luo et al.	Hong	Li et al.	RAP	OAP-I	OAP-II
Lena	57.31	58.50	59.86	60.31	60.65	60.72
Airplane	57.97	62.08	61.61	63.72	63.77	63.73
Baboon	51.06	56.13	53.50	54.20	53.75	53.72
Barbara	55.74	58.33	59.98	59.82	60.40	60.35
Boat	54.06	56.63	58.11	58.43	58.47	58.32
Peppers	55.29	56.10	56.12	58.81	59.13	59.04
Average	55.24	57.96	58.20	59.22	59.36	59.31