Patent attributes
A method of decoding video data, the method including deriving a luma intra prediction mode and chroma intra prediction mode; determining a size of a luma transform unit and a size of a chroma transform unit; generating a reference pixel if at least one reference pixel is unavailable; generating prediction blocks of the current luma block and a current chroma block using the adaptively filtered reference pixels; and generating reconstructed block adding the prediction blocks with residual blocks, further the luma intra prediction mode is derived using a most probable mode (MPM) group including three intra prediction modes, a mode group indicator and a luma prediction mode index, also the luma prediction mode index indicates one of the three intra prediction mode in the MPM group as the luma intra prediction mode when the mode group indicator indicates the MPM group. In addition, when only one of a left intra prediction mode and a above intra prediction mode of current luma prediction unit is available, the MPM group includes the available intra prediction mode and two additional intra prediction modes which are determined by the available intra prediction mode, and further when the available intra prediction mode is a non-directional mode, the other non-directional mode and a vertical mode are set as the two additional intra prediction modes.
