METHOD AND APPARATUS FOR DIMD INTRA PREDICTION MODE SELECTION IN A TEMPLATE AREA, AND ENCODER/DECODER INCLUDING THE SAME

A method of deriving a Decoder-side Intra Mode Derivation, DIMD, predictor for respective samples of a coding unit, CU, of a picture is described. The method comprises splitting a template area adjacent to the CU into a plurality of template area regions, separately selecting no, one or more Intra Prediction Modes, IPMs, in each template area region, wherein the selection involves a selection out of the separately determined IPMs for the entire CU or for one or more regions of the CU, determining blending weights using the selected IPMs, and generating the DIMD predictor by blending at least the selected IPMs using the determined blending weights.