ENCODING METHOD, DECODING METHOD AND ELECTRONIC DEVICE

WIPO Patent Application WO/2023/093377

A1

Provided in the embodiments of the present application are an encoding method, a decoding method and an electronic device. The encoding method comprises: first, acquiring an image to be encoded; then, generating a first feature map matrix on the basis of said image, wherein the first feature map matrix comprises first feature maps of c channels; then, performing intra-group fusion on a feature map group composed of first feature maps of k channels, so as to obtain a first entropy estimation feature corresponding to the feature map group, wherein k is less than c; and then, according to first entropy estimation features, determining a probability distribution corresponding to the first feature map matrix, and encoding the first feature map matrix according to the probability distribution, so as to obtain a code stream. In this way, an entropy estimation feature is determined by means of performing intra-group fusion by using a feature map group composed of feature maps of some channels, and compared with determining an entropy estimation feature by means of performing fusion by using feature maps of all channels, the introduction of invalid information is reduced, thereby reducing the encoding computing power, and thus improving the encoding efficiency.

SHI YIBO (CN)
WANG JING (CN)
ZHAO YIN (CN)

PCT/CN2022/125944

June 01, 2023

October 18, 2022

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HUAWEI TECH CO LTD (CN)

H04N19/91; G06N3/04; H04N19/136; H04N19/172

CN111988629A	2020-11-24
CN111986278A	2020-11-24
US20200154145A1	2020-05-14

BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (CN)

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