Image Robust Watermarking Method Based on DWT-SVD Transform and Chaotic Map

Table 9

BER values compared with that of references [46, 48].

Attacks	Lena			Pepper			Boat
	Ref. [46]	Ref. [48]	Ours	Ref. [46]	Ref. [48]	Ours	Ref. [46]	Ref. [48]	Ours
Gaussian noise (0.001)	0.0224	—	0.0090	0.0107	—	0.0097	0.0176	—	0.0086
Gaussian noise (0.01)	—	0.1943	0.0119	—	0.1608	0.0118	—	0.1445	0.0119
Salt and pepper noise (0.01)	0.0439	0.1445	0.0110	0.0566	0.1025	0.0109	0.0551	0.0986	0.0110
Cropping 25% rows	—	0.1221	0.0702	—	0.1143	0.0653	—	0.1143	0.0650
Cropping 50% rows	—	0.2441	0.0894	—	0.2480	0.0772	—	0.2402	0.0959
JPEG (QF = 80)	0	0.0068	0.0764	0	0	0.0702	0	0.0020	0.0735
Median filtering (3 × 3)	0	0.0107	0.0671	0	0.0029	0.1330	0	0.0039	0.0496
Average filtering (3 × 3)	0	0.0039	0.0304	0	0.0078	0.0809	0.0049	0.0088	0.0240