公开(公告)号：US20250150588A1

公开(公告)日：2025-05-08

申请号：US19011813

申请日：2025-01-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yihui FENG ,  Tiansheng GUO ,  Yibo SHI ,  Jing WANG

IPC: H04N19/124 ,  G06V10/52 ,  G06V10/77 ,  G06V10/82 ,  H04N19/13 ,  H04N19/196

Abstract: This application provides a data encoding and decoding method and a related device. In the encoding method, side information feature extraction is performed on a first feature map of current data, and quantization processing is performed, to obtain a first quantized feature map. Entropy encoding is performed based on the first quantized feature map, to obtain a first bitstream of the current data. A scaling coefficient is obtained based on the first quantized feature map, scaling processing is performed on a second feature map based on the scaling coefficient, and quantization processing is performed, to obtain a second quantized feature map. Scaling processing is performed on a first probability distribution parameter based on the scaling coefficient, to obtain a second probability distribution parameter, and entropy encoding is performed on the second quantized feature map based on the second probability distribution parameter, to obtain a second bitstream of the current data.