CLUSTER-BASED DEPENDENCY SIGNALING

摘要

The signalization of the inter-layer dependencies between layers of a multi-layered data stream is described. A good compromise between a too intensive restriction of the potential diversity of inter-layer dependencies on the one hand and a too complex signaling of the inter-layer dependencies on the other hand has been found by describing the inter-layer dependencies by way of a first inter-dependency syntax structure indicating inter-dependencies between pairs of different values representable by a base layer-ID and a second inter-dependency syntax structure indicating inter-dependencies between pairs of different values representable by an extension layer-ID, the base layer ID and extension layer ID indexing the layers the portions of the multi-layer data stream are associated with. In accordance with this concept, emphasis may be shifted between increased diversity of the signalizable inter-layer dependencies on the one hand and reduced side-information overhead for signaling the inter-layer dependencies on the other hand.

主权项

1. A device configured to process a multi-layered data stream into which a video material is coded at different layers, corresponding to different levels of information amount, using inter-layer prediction, the multi-layer data stream comprising a plurality of packets, each of which is associated with one of the different layers, each layer being indexed by a base layer ID or a base layer ID and an extension layer ID, the device configured to:
read, from the multi-layered data stream, a first inter-dependency syntax structure indicating interdependencies between pairs of different values representable by the base layer-ID, and a second inter-dependency syntax structure indicating inter-dependencies between pairs of different values representable by the extension layer-ID, and construct, based on the first and second inter-dependency syntax structures, an inter-layer dependency description revealing possible inter-layer prediction dependencies between the different layers.