Methods and systems implement fusion of intra TMP mode with other intra prediction modes that utilize adjacent samples, to improve prediction accuracy. A VVC-standard encoder and a VVC-standard decoder can configure one or more processors of a computing system to fuse intra TMP mode with different prediction modes, such as spatial geometric partitioning mode (“SGPM”) and combined inter and intra prediction (“CIIP”); to refine an intra TMP prediction block based on adjacent samples, such as using the method of position-dependent intra prediction combination (“PDPC”); to apply local illumination compensation (“LIC”) to refine an intra TMP prediction block; and/or to implement sub-pixel positions, including multiple, different sub-pixel positions, sub-pixel positions in combination with multi-candidate intra TMP, or flip modes in intra TMP to further improve prediction accuracy.