Patent Document ID: 10003828
Application ID: 15196890
Patent Status: 1

Claim One:
1. A decoder for reconstructing an array of information samples representing a spatially sampled video information signal, which is subdivided into leaf regions of different sizes using multi-tree subdivision according to subdivision information, wherein each leaf region has associated therewith (a) a hierarchy level out of a sequence of hierarchy levels of the multi-tree subdivision, and (b) coding parameters, wherein the coding parameters are, for each leaf region, represented by a respective set of syntax elements, each syntax element is of a respective syntax element type out of a set of syntax element types, the decoder comprising: an extractor for extracting, from a data stream, the subdivision information, inheritance information indicating as to whether inheritance is used, and based on an indication from the inheritance information that inheritance is to be used, at least one inheritance region of the array of information samples which is spatially divided into a set of non-overlapping sub-regions and corresponds to a first hierarchy level of the sequence of hierarchy levels, the first hierarchy level being lower than a second hierarchy level of the sequence of hierarchy levels with which the set of non-overlapping sub-regions are associated, wherein each of the set of non-overlapping sub-regions has a same resolution as that of the at least one inheritance region; wherein the decoder is configured to, responsive to the indication from the inheritance information that inheritance is to be used, extract, from the data stream, at least one syntax element of a predetermined syntax element type including an intra-prediction mode syntax element associated with the at least one inheritance region, for each of the set of non-overlapping sub-regions, copy the intra-prediction mode syntax element associated with the at least one inheritance region as, or use the intra-prediction mode syntax element associated with the at least one inheritance region to predict, a corresponding intra-prediction mode syntax element representing an intra coding parameter associated with the corresponding non-overlapping sub-region, and obtain a separate intra prediction signal for each of the set of non-overlapping sub-regions according to the corresponding intra coding parameter, wherein each of the set of non-overlapping sub-regions is reconstructed based on the respective intra prediction signal.