INTRA PREDICTION METHOD AND DEVICE

Abstract: an intra prediction method by using cross component liner prediction mode (cclm), includes: determining a luma block corresponding to a current chroma block; obtaining luma reference samples of the luma block based on determining l available chroma reference samples of the current chroma block, wherein the obtained luma reference samples of the luma block are down-sampled luma reference samples; calculating linear model coefficients based on the luma reference samples and chroma reference samples that correspond to the luma reference samples; and obtaining a prediction for the current chroma block based on the linear model coefficients and values of a down-sampled luma block of the luma block.

Inventor(s): Xiang Ma, Jianle Chen, Yin Zhao, Haitao Yang

CPC Classification: H04N19/105 (Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction)

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