Stereoscopic video coding in AVS

This paper is an overview for AVS stereoscopic video coding technology, including two channels based inter-view prediction coding and stereo packing mode coding. The first one utilizes inter-view prediction to efficiently exploit the redundancy between the two channels of stereoscopic video. The superior coding performance of the inter-view prediction scheme benefits from an enhanced block prediction algorithm, which includes an improvement of direct mode for B-picture and motion vector prediction for P-picture. In addition, stereo packing mode, including side by side and top bottom, is adopted in AVS stereoscopic video coding to support the stereoscopic video service deployments based on the frame-compatible approach. Furthermore, an enhanced stereo packing mode is also developed to allow the prediction between signals coming from different channels within one packed frame. The simulation results demonstrate that the adopted techniques in AVS stereoscopic video are able to improve the compression efficiency of stereoscopic videos compared to simulcast one.