Robust digital image watermarking scheme using wave atoms with multiple description coding

EURASIP Journal on Advances in Signal Processing

Table 7 Experiment results comparison under Salt and Pepper noises (NC values)

Density parameter“Salt and Pepper noises”	0.02	0.04	0.06	0.08	0.1	0.12	0.14	0.16	0.18	0.2
[21]	0.9478	0.9048	0.8553	0.8222	0.8148	0.7699	0.7729	0.7361	0.7574	0.7303
[12]	0.9134	0.8699	0.7897	0.7698	0.6971	0.6972	0.6262	0.6492	0.6851	0.6392
[22]	0.9784	0.9579	0.9386	0.9209	0.9035	0.8869	0.8714	0.8559	0.8437	0.8301
Proposed scheme	0.9553	0.8824	0.7943	0.8468	0.7897	0.7914	0.7511	0.7015	0.6999	0.6869