A Novel HDR Image Zero-Watermarking Based on Shift-Invariant Shearlet Transform

Table 6

NCs of eight HDR images under common image processing attacks.

	Rend01	Rend07	Rend09	Rend10	Rend13	AtriumNight	CS_Warwick	Rend11
CA1	0.9745	0.9694	0.9916	0.9810	0.9760	0.9906	0.9762	0.9499
CA2	0.9893	0.9972	0.9969	0.9952	0.9989	0.9941	0.9985	0.9938
CA3	0.9674	0.9938	0.9932	0.9904	0.9980	0.9873	0.9974	0.9864
CA4	0.9983	0.9927	0.9992	0.9781	0.9995	0.9988	1	0.9991
CA5	0.9971	0.9721	0.9981	0.9686	0.9983	0.9971	1	0.9974
CA6	0.9949	0.9971	0.9980	0.9913	0.9977	0.9971	0.9994	0.9974
CA7	0.9989	0.9705	0.9949	0.9913	0.9843	0.9932	0.9817	0.9705
CA8	0.9954	0.9653	0.9910	0.9842	0.9806	0.9832	0.9812	0.9668
CA9	0.9826	0.9947	0.9954	0.9809	0.9933	0.9923	0.9974	0.9923
CA10	0.8480	0.8579	0.8996	0.8648	0.9036	0.8590	0.9011	0.8293
Average	0.9746	0.9710	0.9858	0.9726	0.9830	0.9793	0.9833	0.9683