Table 1

Biometric signal retrieval results for the stego-object of Figure 3(e), under different combinations of compression ratios and BERs.

Initial fingerprint

JPEG compression

Factor

BER1 (3×10-4)

BER2 (1×10-3)

BER3 (3×10-3)

PSNR (dB)

39.9

38.4

36.1

Ratio: 2.6

Retrieved fingerprint

PSNR (dB)

37.7

35.9

34.2

Ratio: 5.1

Retrieved fingerprint


Ntalianis et al. EURASIP Journal on Information Security 2011 2011:174945   doi:10.1155/2011/174945

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