CPC H04N 19/44 (2014.11) [H04N 19/13 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/60 (2014.11)] | 20 Claims |
1. A method for video encoding, comprising:
generating, by processing circuitry of an encoder, coding information of a block to be encoded and included in a coded video bitstream, the coding information indicating intra prediction information for the block; and
in response to the block being coded with a directional mode,
determining the directional mode based on a nominal mode and an angular offset, the generated coding information indicating the nominal mode and the angular offset,
determining a non-separable transform for the block based on the nominal mode, wherein the non-separable transform is a non-separable secondary transform, and
encoding the block based on the determined directional mode and the determined non-separable transform, wherein the encoding includes applying the non-separable secondary transform only to a first N transform coefficients that are consecutively arranged along a scanning order used for entropy coding transform coefficients of the block, wherein N is a positive integer, and not applying the non-separable secondary transform to remaining transform coefficients of the block.
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