US patent US12726608
Flipped templates for reconstruction-reordered intra block copy
Abstract
A current block may be encoded/decoded based on a reference block flipped relative to the current block. An indication of whether a value of a parameter (e.g., a block vector difference) indicating the reference block matches a value of a predictor for the parameter (e.g., a block vector difference predictor) may be entropy encoded. The predictor may be selected from among a plurality of candidates based on costs associated with the plurality of candidates associated with candidate reference blocks. The cost of each candidate may be based on comparisons between a template of a current block and templates of the candidate reference blocks, where the templates of the candidate reference blocks have a shape flipped relative to that of the current block.