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An Optimized Trade-off Decomposition Steganography Algorithm
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 86 - Number 5 |
| Year of Publication: 2014 |
| Authors: Mazhar Tayel, Hamed Shawky |
10.5120/14981-3187
|
Mazhar Tayel, Hamed Shawky . An Optimized Trade-off Decomposition Steganography Algorithm. International Journal of Computer Applications. 86, 5 ( January 2014), 19-23. DOI=10.5120/14981-3187
Abstract
In this paper a modified Steganography algorithm is proposed. A fuzzification is performed in the message channel to compress the decomposed coefficients before embedding in the cover-image to get a new Stego-image. A relative embedding strength factor (ESF) is used for embedding the secret in the cover-image. The well known metrics (MSE, PSNR, Cor. and Entropy) were used to evaluate quality of the modified algorithm. Also, the trade-off factor was introduced to determine an optimum value for the ESF to get an acceptable degradation in the Stego-image. In addition, the reconstruction algorithm mentioned in previous paper was modified using the optimum value of the ESF. Comparisons show improved results w. r. t. other algorithms.
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