Patent ID: 11863756
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 8:
9. 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;
performing at least one of a first neural network preprocessing operation, a second neural network preprocessing operation, a third neural network preprocessing operation, and a fourth neural network preprocessing operation;
obtaining a first concatenation result by concatenating the feature data of the current optical flow with at least one of a result of the second neural network preprocessing operation and a result of the third neural network preprocessing operation;
obtaining the current optical flow by applying the first concatenation result to a neural-network-based first decoder;
obtaining a second concatenation result by concatenating the feature data of the current differential data with at least one of a result of the first neural network preprocessing operation and a result of the fourth neural network preprocessing operation;
obtaining the current differential data by applying the second concatenation result to a neural-network-based second decoder; and
reconstructing the current image by warping a previous reconstructed image based on the current optical flow, and applying the current differential data to the warped previous reconstructed image,
wherein the first neural network preprocessing operation comprises applying at least one of the feature data of the current optical flow and feature data of a previous optical flow to a first preprocessing neural network,
wherein the second neural network preprocessing operation comprises applying the feature data of the previous optical flow to a second preprocessing neural network,
wherein the third neural network preprocessing operation comprises applying feature data of previous differential data to a third preprocessing neural network, and
wherein the fourth neural network preprocessing operation comprises applying the feature data of the previous differential data to a fourth preprocessing neural network.