Obtuse Angle Prediction and Factor Evaluation for Image Reversible Data Hiding

Table 10

Comparisons in view of optimal embedding capacities (/bits).

Image	PVO	RAP	OAP-I	OAP-II
Lena	31941	46930	46419	46315
Airplane	38896	69048	68773	68619
Baboon	13144	14772	14735	14702
Barbara	25767	36628	36544	36484
Boat	24126	30368	30238	30167
Peppers	27976	33596	33531	33466
Average	26775	39549	39342	39257