US 12,354,312 B2
Image encoding apparatus and image decoding apparatus both using artificial intelligence, and image encoding method and image decoding method performed by the image encoding apparatus and the image decoding apparatus
Quockhanh Dinh, Suwon-si (KR); and Kwangpyo Choi, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Nov. 9, 2022, as Appl. No. 17/983,843.
Application 17/983,843 is a continuation of application No. PCT/KR2022/017530, filed on Nov. 9, 2022.
Claims priority of application No. 10-2021-0153308 (KR), filed on Nov. 9, 2021; application No. 10-2021-0172264 (KR), filed on Dec. 3, 2021; and application No. 10-2022-0091316 (KR), filed on Jul. 22, 2022.
Prior Publication US 2023/0145525 A1, May 11, 2023
Int. Cl. G06T 9/00 (2006.01); G06T 3/4046 (2024.01)
CPC G06T 9/002 (2013.01) [G06T 3/4046 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An image decoding method using artificial intelligence (AI), the image decoding method comprising:
obtaining, from a bitstream, a current optical flow and correction data which are generated based on a current predicted image and a current image;
obtaining the current predicted image based on a previous reconstructed image and the current optical flow;
obtaining feature data of the current predicted image by applying the current predicted image to a neural network-based predicted image encoder; and
obtaining a current reconstructed image corresponding to the current image by applying the correction data and the feature data of the current predicted image to a neural network-based image decoder.