Multi-hypothesis cross component prediction models

Abstract

The various implementations described herein include methods and systems for coding video. In one aspect, a video bitstream includes a current coding block of an image frame and signals a syntax element for a multi-hypothesis cross-component prediction (MH-CCP) mode. The syntax element indicates whether to reconstruct a first chroma sample of the current coding block based on a first luma sample and associated neighboring luma samples. The first luma sample is collocated with the first chroma sample. A computing system identifies the first luma sample and one or more neighboring luma samples in the current coding block, generates a plurality of nonlinear terms based on at least a subset of the first luma sample and the one or more neighboring luma samples, predicts the first chroma sample based on the plurality of nonlinear terms, and reconstructs the current image frame including the current coding block.