Abstract:
A multi-layer video decoding method includes receiving a plurality of multi-layer image streams that constitute a multi-layer video, obtaining, from a data unit header including information of a second random access point (RAP) picture that corresponds to a first RAP picture included in a first layer image stream and is included in a second layer image stream from among the plurality of multi-layer image streams, first picture order count (POC) information for determining a first partial value of a POC of the second RAP picture that is set to be the same as a POC of the first RAP picture, obtaining, from the data unit header, second POC information about a second partial value of the POC of the second RAP picture, and obtaining the POC of the second RAP picture by using the first POC information and the second POC information.
Abstract:
Provided are scalable video encoding and decoding methods and apparatuses. A scalable video encoding method includes: encoding a lower layer image according to coding units having a tree structure, the coding units hierarchically split from maximum coding units of an image; determining scalable coding modes for performing scalable encoding on a higher layer image based on the coding units having the tree structure by referring to the lower layer image; predicting and encoding the higher layer image by referring to encoding information of the lower layer image based on the determined scalable coding modes; and outputting coding modes, predicted values of the lower layer image, and the determined scalable coding modes of the higher layer image based on the determined scalable coding modes.
Abstract:
Provided are a video encoding method and a video decoding method according to spatial subdivisions based on splitting a picture into a first tile and a second tile, and splitting a current tile among the first tile and the second tile into at least one slice segment, encoding the first tile and the second tile, independently from each other, and encoding maximum coding units of a current slice segment among the at least one slice segment included in the current tile, with respect to the at least one slice segment included in the current tile.
Abstract:
Video encoding and decoding accompanying inter prediction and motion compensation in a multi-view video prediction structure. A multi-view video prediction restoring method includes receiving a base view image stream and additional view image streams for two or more additional views; restoring base view images including base view anchor pictures that are I-picture type images by performing motion compensation referring to the base view images by using the base view image stream; and restoring images of a first additional view by performing at least one of disparity compensation referring to the restored base view images and motion compensation referring to images except for an anchor picture having a preceding reproduction order among the images of the first additional view by using an image stream of the first additional view among the additional view image streams.