Intra prediction method and apparatus

摘要

An intra prediction method according to the present invention comprises the following steps: performing a directional prediction using at least one of a neighboring pixel of a current block and a left upper corner pixel positioned at a left upper corner of the current block so as to obtain a first prediction value for the current block; obtaining a second prediction value for the current block using the reference sample positioned in the current block; and weighted summing the first prediction value and the second prediction value using a weighting matrix so as to obtain a final prediction value for the current block. According to the present invention, image encoding/decoding efficiency may be improved.

主权项

1. An intra prediction method, comprising:
deriving, using a decoder, a first prediction value for a current block in an image by performing directional prediction using at least one of a neighboring sample adjacent to the current block or a left upper corner sample at a left upper corner of the current block; deriving, using the decoder, a second prediction value for the current block by using a reference sample positioned within the current block; and deriving, using the decoder, a final prediction value for the current block by performing a weighted sum of the first prediction and the second prediction values.