Invention Grant
- Patent Title: Image encoding/decoding method and device for performing feature quantization/ de-quantization, and recording medium for storing bitstream
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Application No.: US17801159Application Date: 2021-02-25
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Publication No.: US12231637B2Publication Date: 2025-02-18
- Inventor: Chul Keun Kim , Eunyong Son , Yongjoon Jeon
- Applicant: LG ELECTRONICS INC.
- Applicant Address: KR Seoul
- Assignee: LG ELECTRONICS INC.
- Current Assignee: LG ELECTRONICS INC.
- Current Assignee Address: KR Seoul
- Agency: Bryan Cave Leighton Paisner LLP
- Priority: KR10-2020-0026183 20200302,KR10-2020-0030562 20200312
- International Application: PCT/KR2021/002354 WO 20210225
- International Announcement: WO2021/177652 WO 20210910
- Main IPC: H04N19/124
- IPC: H04N19/124 ; H04N19/169

Abstract:
An image encoding/decoding method and apparatus are provided. An image decoding method may comprise obtaining, from a bitstream, a feature set extracted from an input image using an artificial neural network-based feature extraction method, first information on importance of each of a plurality of channels included in the feature set and second information on a quantization method of the feature set, decoding the feature set, the first information and the second information, and dequantizing the decoded feature set based on the decoded first information and the decoded second information. The second information may comprise the number of quantization bits of each of the plurality of channels, and the number of quantization bits may be determined based on the importance of each of the plurality of channels.
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