Method for extrapolation-based intra prediction

A method for encoding a current block by a video encoding apparatus, the method comprising:

• determining a reference sample region used for deriving filter coefficients, the reference sample region including reconstructed reference samples of the current block;
• determining a filter shape used for an extrapolation-based intra prediction, the filter shape being rectangular and including a prediction pixel region and an input pixel region;
• deriving the filter coefficients based on the reference sample region and the filter shape;
• and
• generating a first prediction block of the current block by applying the derived filter coefficients to the reconstructed reference samples of the current block and predicted samples.

A method for providing video data to a video decoding apparatus, the method comprising:

• encoding the video data into a bitstream;
• and
• transmitting the bitstream to the video decoding apparatus,
• wherein the encoding of the video data comprises:
• determining a reference sample region used for deriving filter coefficients, the reference sample region including reconstructed reference samples of a current block;
• determining a filter shape used for an extrapolation-based intra prediction, the filter shape being rectangular and including a prediction pixel region and an input pixel region;
• deriving the filter coefficients based on the reference sample region and the filter shape;
• and
• generating a prediction block of the current block by applying the derived filter coefficients to the reconstructed reference samples of the current block and predicted samples.