Patent ID: 11968399
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. The video decoder of claim 15, wherein, in case of the random access point signaling granularity indication assuming the second granularity, the video decoder is configured to:
split the DPB into sub-picture DPB s which comprise, at least, one sub-picture DPB for each sub-picture into which the pictures are spatially sub-divided;
decode from the data stream, for a currently decoded picture, a reference picture buffer description and a sub-picture identifier for each sub-picture of the currently decoded picture;
buffer the sub-pictures of the pictures in the DPB by using each sub-picture DPB for buffering of sub-pictures of a predetermined sub-picture identifier associated with the respective sub-picture DPB; and
for each of the sub-picture DPBs, inspect whether the currently decoded picture comprises a corresponding sub-picture the sub-picture identifier of which equals the predetermined sub-picture identifier associated with the respective sub-picture DPB and, if so, use the reference picture buffer description for the corresponding sub-picture to identify sub-pictures in the respective sub-picture DPB ought to remain in the DPB.