Recent advances in distributed video coding

Distributed Video coding (DVC) is a new coding paradigm for video compression mainly based on two major information theory results, Slepian and Wolf´s and Wyner-Ziv theorems. In some major ap- plications such as wireless low power surveillance and multimedia sensor networks, wireless PC cameras and mobile camera phones, it is really a challenge for traditional video coding architecture. For both encoder and decoder, it is necessary to have a low power consumption for some cases. So low power and low complexity encoder are essential to satisfy those requirements. This paper reviews some recent developments of distributed video coding. Slepian and Wolf´s coding is the lossless source coding and Wyner-Ziv coding is a lossy compression with receiver side information. It has been observed that in most of the traditional video coding algorithm such as MPEG,H.263+ or H.264 the encoder has com- plex computational operation rather than the decoder. The distributed video coding is a new kind of video coding which allows a low complexity video encoding where the major part of computational burden is shifted to decoder. DVC is mainly applicable to two areas that is low complexity video coding and robust video coding. The dierent techniques are analysed based on certain parameters such as compression rate, decoding and motion compensation.