Color Image Steganography Technique Using Daubechies Discrete Wavelet Transform

The world in modern days is being more and more tied up to the use of technology for facilitating day to day tasks. In this regard, information security is turning to be great challenge when sending information from one place to another with the aid of technology. Steganography is one of the techniques for the safe transmission which involves hiding information generally with other information that only the receiver will know. In this research, steganography technique using Daubechies Discrete Wavelet Transform (DWT) is implemented. First the cover image is transformed using Daubechies DWT and secret information is embedded in coefficients of Daubechies DWT which gives stego image. Reverse process is applied to obtain secret information from stego image. The performance of the proposed approach is evaluated using PSNR and MSE. Also analysis is done to find the best sub-band to hide information among different sub-bands of Daubechies DWT.