US 11,838,519 B2
Image encoding/decoding method and apparatus for signaling image feature information, and method for transmitting bitstream
Chul Keun Kim, Seoul (KR); Eunyong Son, Seoul (KR); and Yongjoon Jeon, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/799,154
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Feb. 26, 2021, PCT No. PCT/KR2021/002509
§ 371(c)(1), (2) Date Aug. 11, 2022,
PCT Pub. No. WO2021/172956, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 10-2020-0025476 (KR), filed on Feb. 28, 2020; application No. 10-2020-0028127 (KR), filed on Mar. 6, 2020; and application No. 10-2020-0035995 (KR), filed on Mar. 25, 2020.
Prior Publication US 2023/0085554 A1, Mar. 16, 2023
Int. Cl. H04N 19/167 (2014.01); H04N 19/17 (2014.01); H04N 19/169 (2014.01); H04N 19/60 (2014.01)
CPC H04N 19/167 (2014.11) [H04N 19/17 (2014.11); H04N 19/188 (2014.11); H04N 19/60 (2014.11)] 13 Claims
OG exemplary drawing
 
1. An image decoding method by an apparatus, comprising:
obtaining, from a bitstream, encoded data of feature information generated by applying an artificial neural network-based feature extraction method to an image;
reconstructing the feature information by decoding the encoded data of the feature information; and
generating analysis data of the image based on the feature information,
wherein the feature information is reconstructed based on any one of abstraction information of the feature information, a region of interest of the feature information and an encoding format for the feature information,
wherein the reconstructing the feature information comprises:
obtaining decoded feature information by decoding encoded data of the feature information; and
reconstructing the feature information by inversely transforming the decoded feature information based on an encoding format for the feature information,
wherein the decoded feature information is feature information transformed based on the encoding format for the feature information in an encoding process, and
wherein inverse transform of the feature information is performed based on the decoded feature information and the encoding format for the feature information,
wherein a plurality of feature information are obtained by inversely transforming the decoded feature information based on the encoding format for the feature information, and
wherein at least one piece of target feature information of the plurality of feature information is identified based on an index of a feature group to which the target feature information belongs in the decoded feature information and an index of feature information in the feature group.