Method and a device for decoding an intra predicted block of a picture and corresponding coding method and coding device

An encoding method comprising:

• encoding and reconstructing a plurality of reference blocks, wherein a single transform is applied to samples of each reference block, and wherein edges of the plurality of reference blocks are adjacent to a current block of a picture;
• obtaining a plurality of filtered reference blocks by filtering with a deblocking filter along the edges of the plurality of reconstructed reference blocks;
• and
• encoding the current block by intra prediction from the plurality of filtered reference blocks, wherein a single transform is applied to samples of the current block.

A decoding device comprising one or more processors configured to perform:

• decoding a plurality of reference blocks, wherein a single transform is applied to samples of each reference block, and wherein edges of the plurality of reference blocks are adjacent to a current block of a picture;
• obtaining a plurality of filtered reference blocks by filtering with a deblocking filter along the edges of the plurality of decoded reference blocks;
• and
• decoding the current block by intra prediction from the plurality of filtered reference blocks, wherein a single transform is applied to samples of the current block.

A coding device comprising one or more processors configured to perform:

• encoding and reconstructing a plurality of reference blocks, wherein a single transform is applied to samples of each reference block, and wherein edges of the plurality of reference blocks are adjacent to a current block of a picture;
• obtaining a plurality of filtered reference blocks by filtering with a deblocking filter along the edges of the plurality of reconstructed reference blocks;
• and
• encoding the current block by intra prediction from the plurality of filtered reference blocks, wherein a single transform is applied to samples of the current block.

A non-transitory computer-readable medium comprising instructions that cause a processor to perform:

• encoding and reconstructing a plurality of reference blocks, wherein a single transform is applied to samples of each reference block, and wherein edges of the plurality of reference blocks are adjacent to a current block of a picture;
• obtaining a plurality of filtered reference blocks by filtering with a deblocking filter along the edges of the plurality of reconstructed reference blocks;
• and
• encoding the current block by intra prediction from the plurality of filtered reference blocks, wherein a single transform is applied to samples of the current block.