Patent ID: 8995778
Filing Date: 2015-03-31
Classification: G06T,H04N

Abstract:
1. An apparatus for decoding an image comprising: an inverse-transforming unit configured to restore a residue by entropy-decoding a received bit stream and by performing inverse quantization and inverse transform on the residue; an intra predicting unit configured to generate a prediction unit by performing intra-prediction that selectively uses one of a plurality of prediction modes on the prediction unit; and an adder configured to restore the image by adding the residue to the prediction unit, wherein a coding unit has a recursive tree structure, and when a planar intra prediction mode is activated, a predicted pixel value of an internal pixel of a current prediction unit is obtained by performing bilinear interpolation using (i) vertically and horizontally directional corresponding internal boundary prediction pixel values in the current prediction unit, and (ii) vertically and horizontally directional corresponding pixel values in previously decoded left side block and upper end block of the current prediction unit.