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A Secure and High Capacity Image Steganography Technique

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Author(s): Hemalatha S | U Dinesh Acharya | Renuka A | Priya R. Kamath

Journal: Signal & Image Processing
ISSN 2229-3922

Volume: 4;
Issue: 1;
Start page: 83;
Date: 2013;
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Keywords: Steganography | IWT | MSE | PSNR | RGB | Luminance | Chro minance

ABSTRACT
Steganography is the science of “invisible” communication. The purpose of Steganography is to maintainsecret communication between two parties. The secret information can be concealed in content such asimage, audio, or video. This paper provides a novelimage steganography technique to hide multiple secretimages and keys in color cover image using IntegerWavelet Transform (IWT). There is no visual differencebetween the stego image and the cover image. The extracted secret images are also similar to the originalsecret images. Very good PSNR (Peak Signal to NoiseRatio) values are obtained for both stego andextracted secret images. The results are compared with the results of other techniques, where single imageis hidden and it is found that the proposed technique is simple and gives better PSNR values than others.
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