Abstract: The reversible data hiding (RDH) technique gains remarkable attention from research communities and academicians. A reversible data hiding as well as data scrambling methodology is proposed in this work. The RDH is also known as lossless or invertible data hiding. In this paper a novel hybrid method of data hiding, data scrambling and compression of image is proposed. Initially a color image is taken as input for data embedding and later converted into grayscale image. Discrete cosine transformation (DCT) for grayscale image compression and chaos encryption algorithm for scrambling the image are considered. Further, data has been embedded with the help of Least Significant Bit (LSB) insertion technique. This technique is one of the easiest ways to embed secret data in an image replacing the LSB of each sampling bit with binary information. The main advantage of this technique is that it allows for large secret information to be embedded. The whole methodology is implemented and tested in MATLAB. Different quality metrics such as PSNR, SSIM and MSE are computed for various test images. The obtained results are reasonable and acceptable.
Keywords: Steganography, reversible, data scrambling, data embedding.
Title: Analysis of Reversible Data Hiding and Data Scrambling-Embedding Technique
Author: Jaladi Vivek, Dr Baswaraj Gadgay
International Journal of Interdisciplinary Research and Innovations
ISSN 2348-1218 (print), ISSN 2348-1226 (online)
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