Reversible Data Hiding in Encrypted Images Based on Adaptive Gradient Prediction

Table 3

The embedding rate of the test images when .

Image
Lena	MED	0.3933	1.6609	2.6867	2.6447	1.9285	0.9919
	GAP	0.6109	2.0127	2.8977	2.7055	1.9440	0.9935
	Proposed	0.6022	2.0573	2.9596	2.7551	1.9595	0.9951
Crowd	MED	1.4856	2.3263	2.6530	2.5180	1.8966	0.9906
	GAP	1.4777	2.3745	2.7126	2.5536	1.9071	0.9912
	Proposed	1.5516	2.4751	2.8050	2.6053	1.9228	0.9922
Lake	MED	—	0.2035	1.2433	1.9997	1.8080	0.9856
	GAP	—	0.4672	1.5093	2.1449	1.8284	0.9852
	Proposed	—	0.5587	1.5769	2.1707	1.8399	0.9866
Beans	MED	0.5456	1.1069	1.8032	2.1669	1.8569	0.9880
	GAP	0.2821	0.9647	1.7169	2.1335	1.8461	0.9877
	Proposed	0.2842	1.0453	1.8053	2.2070	1.8691	0.9906