METHOD AND APPARATUS FOR CODING VIDEO STREAM ACCORDING TO INTER-LAYER PREDICTION OF MULTI-VIEW VIDEO, AND METHOD AND APPARATUS FOR DECODING VIDEO STREAM ACCORDING TO INTER-LAYER PREDICTION OF MULTI VIEW VIDEO

摘要

A video stream decoding method includes obtaining random access point (RAP) reference layer number information indicating the number of layers referred to for performing inter layer prediction on RAP images among current layer images and non-RAP reference layer number information indicating the number of different layers referred to for performing inter layer prediction on non-RAP images, from a video stream regarding images encoded for a plurality of layers; obtaining RAP reference layer identification information for each layer referred to for predicting the RAP images based on the obtained RAP reference layer number information, from the video stream; obtaining non-RAP reference layer identification information for each layer referred to for predicting the non-RAP images based on the obtained non-RAP reference layer number information, from the video stream; reconstructing an RAP image of a current layer based on a layer image indicated by the obtained RAP reference layer identification information; and reconstructing a non-RAP image of the current layer based on a layer image indicated by the obtained non-RAP reference layer identification information.