Patent ID: 9083974
Filing Date: 2015-07-14
Classification: H04N

Abstract:
1. A method for processing a video signal using intra prediction, the method comprising: receiving the video signal, the video signal including a current prediction unit and intra prediction mode information corresponding to the current prediction unit; obtaining the intra prediction mode information from the video signal; when an angular line represented by the intra prediction mode information passes through a point between reference samples of a first neighboring block of the current prediction unit and a reference sample of a second neighboring block of the current prediction unit, the first neighboring block being different from the second neighboring block: estimating a virtual reference sample corresponding to the point using a first linear interpolation between the reference samples of the first neighboring block; and predicting a current sample of the current prediction unit using a second linear interpolation between the estimated virtual reference sample of the first neighboring block and the reference sample of the second neighboring block, wherein the virtual reference sample of the first neighboring block and the reference sample of the second neighboring block are located on the angular line represented by the intra prediction mode information, and wherein the first neighboring block including the virtual reference sample corresponds to a top neighboring block of the current prediction unit and the second neighboring block corresponds to a left neighboring block of the current prediction unit, or the first neighboring block including the virtual reference sample corresponds to a left neighboring block of the current prediction unit and the second neighboring block corresponds to a top neighboring block of the current prediction unit.