Reversible Data Embedding for MPEG-4 Video Using Middle Frequency DCT Coefficients

Abstract

The advancement of Internet technology made the usage and distribution of multimedia contents over Internet very simple. Digital watermarking and steganography are becoming the areas of interest for providing security to the multimedia contents. Recently, the data embedding into multimedia contents such as image, video, audio, etc. is fascinating in watermarking and steganography applications. Designing the data embedding schemes for video and achieving reversibility become a challenging task. In this article, we propose two reversible data embedding schemes for video, which embed the data during the process of MPEG-4 compression. We use the middle frequency components of the DCT blocks for embedding. Compared to C. C. Chang et al. scheme, proposed MIDCAP achieve almost twice the embedding capacity and the acceptable range of PSNR values and MIDVIS is aimed at improving the visual quality for the applications which requires good visual quality.