Image Watermark Based on Extended Shearlet and Insertion Using the Largest Information Entropy on Horizontal Cone

Table 3

Experimental results under the attack of JPEG lossy Compression.

Quality factor	30	40	50	60	75	90
Lena
PSNR	35.1718	36.0294	36.4005	42.2603	53.2168	48.0330
MSE	19.7649	16.0294	14.8947	6.1242	0.3100	0.8313
NC	0.8252	0.8506	0.9004	0.9160	0.9453	0.9849
The extracted watermark
Boat
PSNR	33.3926	34.3324	34.6845	38.6331	53.5308	47.9809
MSE	29.7727	23.9794	22.1121	8.9077	0.2884	1.0351
NC	0.8101	0.8423	0.8955	0.9077	0.9233	0.9834
The extracted watermark
Barbara
PSNR	30.6849	31.9392	32.2378	36.1950	53.8219	46.1332
MSE	55.5383	41.6065	38.8416	15.6165	0.2697	1.5840
NC	0.8257	0.8457	0.8706	0.9146	0.9438	0.9834
The extracted watermark