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Details van artikel 53 van 122 gevonden artikelen
| Titel: |
EMBEDDING INFORMATION IN DCT COEFFICIENTS BASED ON AVERAGE COVARIANCE |
| Auteur: |
N SATHISHA, K SURESH BABU, K B RAJA, VENUGOPAL K R, L M Patnaik |
| Verschenen in: |
International journal of engineering science and technology |
| Paginering: | Jaargang 3 (2011) nr. 4 pagina's 3184-3194 |
| Jaar: |
2011 |
| Inhoud: |
The steganography is a covert communication to transfer confidential information over an internet. In this paper we propose Embedding Information in Discrete Cosine Transform Coefficients based onAverage Covariance (EIDCT) algorithm. The Average Covariance of the Cover Image (ACCI) is computed and 0.15 is considered as the threshold value. The cover image is segmented into 8*8 cells andDiscrete Cosine Transform (DCT) is applied to derive coefficients. The Most Significant Bits (MSBs) of payload are embedded into the cover image based on ACCI and DCT coefficients. It is observed that the capacity, Peak Signal to Noise Ratio (PSNR) and Security is better compared to the existing algorithm. |
| Uitgever: |
Engg Journals Publication (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 53 van 122 gevonden artikelen
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