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Table 1 Results of embedding data in the highest frequency subband of the host image.

From: A Contourlet-Based Image Watermarking Scheme with High Resistance to Removal and Geometrical Attacks

Host image

Highest frequency subband

PSNR

NC

Baboon

13

37.0757

0.986389

Barbara

6

36.7178

0.983328

Boat

4

36.7234

0.985742

Cameraman

1

45.7128

0.987057

City

13

37.0794

0.98637

Couple

13

37.0754

0.986388

Elaine

1

45.7083

0.987072

Lena

16

46.968

0.986253

Man

4

36.9369

0.98061

Peppers

4

36.7585

0.985308

Zelda

4

36.7616

0.985401