A reversible data embedding scheme for MPEG-4 video using HVS characteristics

The reversible data embedding is emerging due to its various watermarking and steganography applications. Most of the reversible data embedding schemes result in visual distortions while embedding the data into DCT domain. In this paper we propose a reversible data embedding scheme for MPEG-4 video which embed the data into middle frequency coefficients of quantized DCT blocks and use HVS based visual quality metrics. The relative improvement in the visual quality and capacity is compared and the experimental results show that the proposed scheme achieves higher visual quality.