Method and device for encoding and decoding data, and system

A coding and data technology, applied in digital video signal modification, electrical components, image communication, etc., can solve the problems of low data compression rate and low probability distribution accuracy

Active Publication Date: 2020-09-08
HANGZHOU HIKVISION DIGITAL TECH
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above process, the mean value in the probability distribution is directly set to 0, but the mean value in the actual situation is probably not 0, and...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for encoding and decoding data, and system
  • Method and device for encoding and decoding data, and system
  • Method and device for encoding and decoding data, and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0119] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0120] Embodiments of the present disclosure provide a method for encoding data and a method for decoding data. The entropy encoding method can be implemented by an encoding end, and the entropy decoding method can be implemented by a decoding end. Such as figure 1 As shown in the figure above, the encoding end can include a transformation module, a quantization module, an entropy cod...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for encoding data, a device for encoding data, a method for decoding data, a device for decoding data and a system, which belong to the technical field of data compression. The method for encoding data comprises the following steps of: inputting a quantized transformation coefficient and a corresponding quantization step length into a first processing network of an entropy model, and acquiring a first probability distribution parameter which is processed and output by the first processing network and reflects probability distribution of the quantized transformation coefficient; determining probability distribution of the quantized transform coefficient according to the first probability distribution parameter and a second probability distribution parameter; and performing entropy coding processing on the quantized transform coefficient according to the probability distribution to obtain an entropy coding result. By adopting the methods, the devices andthe system, if entropy coding processing is carried out on the quantized transformation coefficient according to the more accurate first probability distribution parameter and the second probabilitydistribution parameter, the obtained data compression rate is relatively high.

Description

technical field [0001] The present disclosure relates to the technical field of data compression, in particular to a method, device and system for encoding and decoding data. Background technique [0002] Before data such as video data is transmitted or stored, the video data needs to be encoded to compress the video data. The compressed video data has a smaller data volume, which is more conducive to video data transmission and storage. Encoding can be performed in units of images in video data. First, the image can be transformed to obtain transformation coefficients. Then, the transformation coefficients can be quantized to obtain quantized transformation coefficients. Finally, the quantized transformation coefficients can be determined. Probability distribution, based on the probability distribution, entropy coding is performed on the quantized transform coefficients to obtain a final image code stream. Wherein, the quantized transform coefficient may be a multi-dimensi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04N19/12H04N19/124H04N19/13H04N19/149H04N19/30H04N19/91
CPCH04N19/124H04N19/12H04N19/13H04N19/149H04N19/395H04N19/91
Inventor 林超逸
Owner HANGZHOU HIKVISION DIGITAL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap