CPC H04N 19/137 (2014.11) [H04N 19/124 (2014.11); H04N 19/43 (2014.11); H04N 19/51 (2014.11); H04N 19/91 (2014.11)] | 9 Claims |
1. An image decoding method using artificial intelligence (AI), the image decoding method comprising:
obtaining feature data of a current optical flow and feature data of current differential data from a bitstream corresponding to a current image;
applying feature data of a previous optical flow to a first preprocessing neural network;
obtaining a first concatenation result by concatenating the feature data of the current optical flow and feature data obtained from the first preprocessing neural network;
obtaining the current optical flow by applying the first concatenation result to a neural-network-based first decoder;
obtaining the current differential data by applying the feature data of the current differential data to a neural-network-based second decoder; and
reconstructing the current image using the current differential data and a current predicted image generated from a previous reconstructed image based on the current optical flow.
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