CPC H04N 19/51 (2014.11) [H04N 19/124 (2014.11); H04N 19/137 (2014.11); H04N 19/17 (2014.11); H04N 19/43 (2014.11); H04N 19/91 (2014.11)] | 11 Claims |
1. A method of reconstructing an optical flow by using artificial intelligence (AI), the method comprising:
obtaining, from a bitstream, feature data of a current residual optical flow for a current image;
obtaining the current residual optical flow by applying the feature data of the current residual optical flow to a neural-network-based first decoder;
obtaining a second-order optical flow between a current predicted optical flow and a previous optical flow; and
obtaining the current predicted optical flow by modifying the previous optical flow according to the second-order optical flow; and
reconstructing a current optical flow based on the current residual optical flow and the current predicted optical flow.
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