A video multiplexing scheme using data embedding

In this paper we propose a video multiplexing scheme using data embedding techniques for transmission of a low resolution video signal with another video signal though the same communication channel. Our proposed system can be implemented by addition of a pre- and post-processing block. We encode the low resolution video and embed the encoded bit-stream in the main host video. We develop a low complexity and robust encoding scheme for low resolution video by applying three-dimensional wavelet decomposition on it, and encoding the important subbands using multiple description scalar quantizers. We also apply three-dimensional wavelet decomposition on the host video and embed the encoded bit-stream of the low resolution video in the host signal subbands. At the receiver the system reconstructs the low resolution video by recovering the embedded data in subbands. We examine the system performance by evaluating the quality of recovered video after host video faces various types of processing. At the receiver we evaluate the percentage of correct sign language messages recovery. We further evaluate the system performance when the host video undergone compression and addition of noise during transmission.