Method and apparatus for decoding/encoding a video signal
The method includes receiving a multi-view video stream including a random access picture, which includes a random access slice. The random access slice references only a slice corresponding to a same time and a different view of the random access picture. Type information indicating whether the random access slice is predicted from one or two reference pictures is obtained, and a reference picture list is initialized using view number information and view identification information included in obtained initialization information according to the type information. A prediction value of a macroblock in the random access picture is determined based on the initialized reference picture list, and the macroblock is decoded using the prediction value.
1. A video player, comprising:
a receiving unit configured to receive a multi-view video signal, the multi-view video signal including a random access picture, the random access picture including a random access slice, the random access slice referencing only a slice corresponding to a same time and a different view of the random access picture, the multi-view video signal being transmitted as a digitally-encoded signal;
a digital signal processing unit configured to decode a target video signal from the multi-view video signal, comprising the steps of:
obtaining a random access flag for inter-view prediction, the random access flag indicating whether a coded picture is the random access picture;
obtaining initialization information of a reference picture list for the random access slice based on the random access flag, the initialization information representing view relationships between a plurality of views, the initialization information including view number information and view identification information, the view number information indicating a number of reference pictures referred for inter-view prediction of the random access picture, and the view identification information identifying to which of the plurality of views each of the reference pictures belongs;
initializing the reference picture list of the random access slice, the initializing including assigning an inter-view reference index to the reference picture based on the view number information and the view identification information, the inter-view reference index identifying the reference picture in the initialized reference picture list used for inter-view prediction of a block to be decoded in the random access picture, the block to be decoded having a same time with the reference picture and a different view from the reference picture;
determining a prediction value of a macroblock in the random access picture based on the initialized reference picture list; and
decoding the macroblock using the prediction value,
wherein the initialization information is obtained based on a value indicating decoding order between the plurality of views;
a D/A converter configured to convert the target video signal into an analog video signal; and
a display unit configured to output the analog video signal.
2. The video player of claim 1 , wherein the multi-view video data includes video data of a base view independent of other views, the base view being a view decoded without using inter-view prediction.