Intra-prediction apparatus for removing a directional intra-prediction mode from a set of predetermined directional intra-prediction modes

摘要

An intra-prediction apparatus removes a directional intra-prediction mode from a set of predetermined directional intra-prediction modes. The intra-prediction apparatus comprises: a reference sample determining unit configured to select the directional intra-prediction mode from the set of predetermined directional intra-prediction modes, and to determine a plurality of available reference samples; a directional intra-prediction mode removing unit configured to remove the directional intra-prediction mode from the set of predetermined directional intra-prediction modes if a length (L_RSlonger) associated with the plurality of available reference samples is smaller than a multiple of a length (L_longer) of a first side of the video coding block for obtaining a reduced set; and an intra-prediction unit configured to intra-predict pixel values of pixels of the rectangular video coding block on the basis of the reduced set. The intra-prediction apparatus can further comprise an area determining unit.