Patent · US Active

Image encoding method and apparatus and image decoding method and apparatus

US11468602B2 · kind B2 · utility

0Cited by

1References

10Claims

0Family size

Assignee

FUJITSU LIMITED · JP

Inventors

Jing Zhou · Beijing, CN
Sihan Wen · Beijing, CN
Zhiming Tan · Beijing, CN

Key dates

Filing date	Jan 23, 2020
Grant date	Oct 11, 2022
Priority date	—
Expiry date	Feb 27, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/91
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Embodiments of this disclosure provide an image encoding method and apparatus and image decoding method and apparatus. The image encoding includes performing convolutional neural network (CNN) encoding on image data to generate feature vectors or feature maps; quantizing the feature vectors or feature maps to generate discrete symbols to be encoded; and estimating probabilities of the symbols to be encoded by using a multi-scale context model including multiple mask convolution layers of different scales. An entropy encoding of the image data is performed according to the probabilities of the symbols to be encoded.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.