CPC H04N 19/132 (2014.11) [H04N 19/117 (2014.11); H04N 19/176 (2014.11); H04N 19/46 (2014.11); H04N 19/82 (2014.11); H04N 19/70 (2014.11)] | 8 Claims |
1. An image decoding method performed by a decoding apparatus, comprising:
obtaining image information including residual information through a bitstream;
generating reconstructed samples of a current picture, based on the residual information; and
generating modified reconstructed samples, based on an in-loop filtering process for the reconstructed samples,
wherein the image information includes a sequence parameter set (SPS) and picture header information,
wherein the SPS includes an SPS virtual boundaries enabled flag,
wherein the SPS further includes an SPS virtual boundaries present flag based on a value of the SPS virtual boundaries enabled flag,
wherein whether the in-loop filtering process is performed across the virtual boundaries is determined, based on the SPS virtual boundaries enabled flag,
wherein whether information on positions of the virtual boundaries and information on a number of the virtual boundaries are included in the SPS is determined based on a value of the SPS virtual boundaries present flag,
wherein based on that the value of the SPS virtual boundaries enabled flag is 1 and the value of the SPS virtual boundaries present flag is 0, the picture header information includes a picture header virtual boundaries present flag, and
wherein whether information on positions of the virtual boundaries and information on a number of the virtual boundaries are included in the picture header information is determined based on a value of the picture header virtual boundaries present flag.
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