Patent ID: 11956429
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 52:
53. A method for block-based decoding of a picture from a data stream, the picture comprising a plurality of blocks to be decoded, the method comprising:
determining an intra-coding mode for a current block of the plurality of blocks;
wherein the current block is partitioned, along a partition dimension, into a number of partitions, wherein the number of partitions is greater than 2;
sequentially reconstructing each partition of the current block in a predetermined partition order along the partition dimension by,
for a current partition of the current block,
deriving a predictor for the current partition of the current block using the intra-coding mode for the current block, based on one or more already reconstructed samples neighboring the current partition;
determining a prediction residual for the current partition wherein,
if the current partition is not the last partition in the current block, based on the predetermined partition order, decoding a coded partition flag from the data stream, and if the current partition is the last partition in the current block, based on the predetermined partition order, and if each coded partition flag for each previously reconstructed partition in the current block is zero, inferring that the coded partition flag for the current partition is one;
if the coded partition flag is one or inferred to be one, decoding transform coefficients of the current partition from the data stream, and performing inverse transform of the decoded transform coefficients for the current partition to obtain the prediction residual for the current partition; and

combining the predictor and the prediction residual for the current partition.