Signal & Image Processing An International Journal · 2013 · 62 citations · 11 references
ComputingComputer ScienceCybersecurityComputer SecurityCryptographyDigital ImagingData SecurityHidden InformationData HidingImage SteganographyInformation HidingSignal-to-noise RatioSteganalysisSteganographyWavelet Transform
There is no visual difference between the stego image and the cover image. The extracted secret images are also similar to the original secret images. Very good PSNR (Peak Signal to Noise Ratio) values are obtained for both stego and extracted secret images. The results are compared with the results of other techniques, where single image is hidden and it is found that the proposed technique is simple and gives better PSNR values than others.
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Distortionless data hiding based on integer wavelet transform
Guorong Xuan, Jiang Zhu, Jidong Chen et al. · Electronics Letters · 2002 · 271 citations