A Method to Reduce Effects of Packet Loss in Video Streaming Using Multiple Description Coding
محورهای موضوعی : Journal of Computer & RoboticsMahboobe Shabaniyan 1 , Ehsan Akhtarkavan 2
1 - Faculty of Computer and Information Technology Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran
2 - Department of Computer Engineering, Khatam University of Technology, Tehran, Iran
کلید واژه: Multiple Description Coding, Real-Time Video, Lattice, Sub-lattice hexagonal, Quantization,
چکیده مقاله :
Multiple description (MD) coding has evolved as a promising technique for promoting error resiliency of multimedia system in real-time application programs over error-prone communicational channels. Although multiple description lattice vector quantization (MDCLVQ) is an efficient method for transmitting reliable data in the context of potential error channels, this method doesn’t consider discreteness of network so that losing all descriptions is highly possible. It means all videos may be removed. In this study, we have implemented scheme of MDCLVQ in real-time environment of network, in a method that, raw video (i.e. video with no standard encoding (like MPEG)) is transmitted through independent packets inside of network. This technique leads in low or close to zero loss of all packets. Our purpose is to increase error resiliency and reliable data transmission in error-prone channels. The technique has been tested on some videos sources of Akiyo, Carphone, Foreman and Miss-America. The experimental results indicate that quality of reconstructed videos are substantially improved in terms of central and side PSNR.
