US 2025/0063156 A1 · METHOD AND APPARATUS FOR INTRA BLOCK COPY MODE CODING WITH SEARCH RANGE SWITCHING

Abstract

This disclosure relates generally to video coding and particularly to intra block copy coding mode. For example, a method is disclosed for reconstructing a video block in a video stream. The method may include extracting at least one syntax element from the video stream, the at least one syntax element being associated with an intra block copy (IBC) prediction of the video block; determining an IBC referencing mode for the IBC prediction of the video block, the IBC referencing mode comprises one of no-IBC mode, a local-referencing IBC mode, a non-local-referencing IBC mode, and a local-and-non-local-referencing IBC mode; and generating reconstructed samples of the video block from the video stream based on the IBC referencing mode.

Claims20

Dependent claims

A method for encoding a video block in a current video frame, comprising:

receiving the video block;
searching for a reference block in the current video frame for intra block copy (IBC) prediction of the video block;
determining a location of the reference block as either a local block or non-local block relative to the video block;
determining an IBC referencing mode for the IBC prediction of the video block according to the location of the reference block, the IBC referencing mode being selected from a predefined set of IBC referencing modes including at least a no-IBC mode, a local-referencing IBC mode, a non-local-referencing IBC mode, and a local-and-non-local-referencing IBC mode;
and
encoding the video block in a bitstream using the reference block and signaling the IBC referencing mode as at least one syntax element in the bitstream.

3 more elements

Dependencies are inferred from the claim text.

Method and apparatus for intra block copy mode coding with search range switching

Life of this patent

Method and apparatus for intra block copy mode coding with search range switching

Life of this patent

Abstract

Claims20