Methods and devices for decoder-side intra mode derivation

Abstract

Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for video decoding with template-based intra mode derivation (TIMD), decoder-side intra mode derivation (DIMD), or multi-direction intra prediction (MDIP). In one method, a decoder determines prediction sample values of one or more video blocks based on position-dependent intra prediction combination (PDPC) operations for one or more intra predictions of the one or more video blocks to unify the PDPC operations in an intra prediction coding mode, and the PDPC operations modify results of the one or more intra predictions based on a combination of boundary reference samples.

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