Patent ID: 8989258
Filing Date: 2015-03-24
Classification: H04N

Abstract:
1. A method of generating a quantized block, comprising: deriving an intra prediction mode of a current prediction unit using an MPM group including three intra prediction modes which are determined according to left and above intra prediction modes of the current prediction unit; selecting an inverse scan pattern based on the intra prediction mode and a size of a transform unit; and generating the quantized block by inversely scanning significant flags, coefficient signs and coefficient levels according to the selected inverse scan pattern, wherein the inverse scan pattern is selected among a diagonal scan, a vertical scan and a horizontal scan, and wherein, when the left intra prediction mode and the above intra prediction mode are available and the same each other and the left intra prediction mode is one of two non-directional intra prediction modes, the MPM group includes the two non-directional intra prediction modes and a vertical mode.