Patent ID: 11876964
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. An apparatus for block-based encoding of a picture into a data stream, wherein the apparatus comprises:
a processor; and
a memory storing instructions that, when executed, cause the processor to:
encode a split mode flag for a predetermined block of the picture into the data stream;
if the split mode flag indicates a first split mode:
sequentially subject partitions of the predetermined block according to a predetermined partition order by, for a current partition and before proceeding with a subsequent partition:
deriving a predictor for the current partition by filling the current partition depending on one or more already encoded samples neighboring the current partition in a manner depending on an intra-coding mode encoded into the data stream;
determining a prediction residual for use in correcting the predictor for reconstructing the current partition, wherein the prediction residual of the partitions is signaled in the data stream;

wherein the predetermined block is partitioned along a predetermined dimension so that the partitions are as wide as the predetermined block perpendicular to the predetermined dimension, and a width of the partitions, measured along the predetermined dimension, is selected out of at least two different width settings;

if the split mode flag indicates a second split mode:
subject the predetermined block to spatial intra prediction in a manner depending on the intra-coding mode, wherein the spatial intra prediction is performed by:
partitioning the predetermined block into leaf blocks of an hierarchical multi-tree subdivision of the predetermined block along horizontal and vertical subdivision leaf block borders and determining a prediction residual of the predetermined block for a sequential reconstruction of the leaf blocks of the predetermined block according to a predetermined leaf block order which sequentially traverses the leaf blocks.