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Research Paper | Electronics & Communication Engineering | India | Volume 3 Issue 6, June 2014
Comparative Analysis of Embedding Data in Image using DCT and DWT Techniques
Mamata J | Poornima G 
Abstract: Steganography is the art of hiding the existence of data in another transmission medium to achieve secret communication. It is the science of embedding information into the cover image viz. ; text; video; and image (payload) without causing statistically significant modification to the cover image. This paper deals with hiding credit card numbers in an image file (bank logo) using; Discrete Cosine Transform (DCT) based Steganography and Discrete Wavelet Transform (DWT) based Steganography. It is a novel Lossless Secure data embedding algorithm in which the vital information can be embedded into the cover image while preserving the quality of cover image and maintaining the security of the data. The security of the data embedded and cover image quality are two main issues that need to be considered during the process of the data embedding. SDEM-DCT and SDEM-DWT (Scramble Data Embedding in Mid-frequency range of DCT and DWT) Algorithm consists of three major security levels that can be used to hide Credit Card Numbers of customers inside the bank LOGO. The performance and comparison of techniques is evaluated on the basis of the parameters MSE; PSNR; Capacity; Correlation; Processing time and Embedding capacity.
Keywords: Steganography, Malakooti's Randomize key generator, DCT, DWT, coefficients, Matlab, reversible Data hiding, watermarking, SDEM-DCT, M-K scramble descramble
Edition: Volume 3 Issue 6, June 2014,
Pages: 2368 - 2374