2010
DOI: 10.5121/ijma.2010.2301
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A Robust Image Authentication Method Based on Wavelet Transform and Teager Energy Operator

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Cited by 4 publications
(4 citation statements)
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“…From this comparison, one can conclude that maximum degrade in PSNR is 4.1757 dB and minimum degrade in PSNR is 2.7002 at 4 bpp; and maximum degrade in PSNR is 4.0277 dB and minimum degrade in PSNR is 1.0208 at 2 bpp; and maximum degrade in PSNR is 4.81 dB and minimum degrade in PSNR is 0.1164 at 1 bpp. PSNR is higher than 30 dB which shows that composite image still has good visual quality after JPEG2000 attack and hence imperceptibility is maintained [15]. The correlation and SIM found at different bit rates are highly correlated and similar, which confirms the robustness of the proposed algorithm.…”
Section: Jpeg2000 Compression Attacksupporting
confidence: 58%
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“…From this comparison, one can conclude that maximum degrade in PSNR is 4.1757 dB and minimum degrade in PSNR is 2.7002 at 4 bpp; and maximum degrade in PSNR is 4.0277 dB and minimum degrade in PSNR is 1.0208 at 2 bpp; and maximum degrade in PSNR is 4.81 dB and minimum degrade in PSNR is 0.1164 at 1 bpp. PSNR is higher than 30 dB which shows that composite image still has good visual quality after JPEG2000 attack and hence imperceptibility is maintained [15]. The correlation and SIM found at different bit rates are highly correlated and similar, which confirms the robustness of the proposed algorithm.…”
Section: Jpeg2000 Compression Attacksupporting
confidence: 58%
“…Fig. 8(a) shows the PSNR of Lena composite image against different QF of JPEG compression and that depicts that the composite image is imperceptible at all QF as PSNR is above 30 dB [15]. Fig.…”
Section: Jpeg Compression Attackmentioning
confidence: 99%
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“…PSNR between the cover and stego images without and with OPAP are shown in Tables 1, 2 and 3 for different values of k, where k is number of secret bits embedded into peak wavelet coefficients of subbands of the cover image. From these Tables, one can observe that PSNR between cover images and stego images decreases as the value of k is increased but it is highly acceptable by the human visual system as upto k=3, PSNR is around 40 dB [13]. Also, when OPAP is blended with the proposed technique, there is maximum 2 dB improvement in PSNR of stego images.…”
Section: Resultsmentioning
confidence: 78%