Combined prediction mode for intra block copy with intra mode derivation

Abstract

A method for using combined prediction with reference block based intra prediction mode (IPM) derivation is provided. A video coder receives data to be encoded or decoded as a current block of pixels of a current picture of a video. The video coder identifies a reference block. The reference block may be indicated by a block vector associated with the current block. The video coder derives an intra prediction mode based on the identified reference block. The video coder generates a first predictor of the current block based on the derived intra prediction mode. The video coder generates a combined prediction of the current block based on the first predictor and a second predictor. The video coder encodes or decodes the current block by using the combined prediction.

Images