Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Communication method and network apparatus for a radio communication system

A technology of distributed information sources and decoding methods, which is applied in the field of computer multimedia, can solve problems such as code stream errors, achieve strong anti-error performance, and improve the effect of error correction capabilities

Inactive Publication Date: 2009-03-04
TSINGHUA UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In wireless, the code stream is easily disturbed by noise and makes mistakes. Traditional image and video coding methods are obviously not suitable for direct application in wireless transmission.

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
  • Communication method and network apparatus for a radio communication system
  • Communication method and network apparatus for a radio communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] An error-resistant image encoding and decoding method based on distributed source coding proposed by the present invention is described in detail in conjunction with the accompanying drawings and embodiments as follows:

[0029] An error-resistant image encoding and decoding method based on distributed source coding proposed by the present invention, the encoding and decoding method is as follows.

[0030] The encoding method, such as figure 1 shown, including the following steps:

[0031] 1) Decompose the Laplacian pyramid on the image X to be coded to obtain a low-resolution image and a residual image;

[0032] 2) Encode the low-resolution image to generate code stream B 1 (Using the traditional image coding method), the residual image is directly discarded without any processing;

[0033] 3) Transform and quantize the image X to be coded, and then divide the quantized values ​​into bit planes;

[0034] 4) Channel coding is performed on each bit plane to generate ...

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 anti-error encoding and decoding image based on the distributed source encodings, which includes: it decomposes the encoding image X by using Laplace pyramid to achieve a image with a low resolution and a residual image. Then, it encodes the image with a low resolution to achieve code stream B1 and directly discards the residual image. Then, it transforms X and divides the quantified value into sliced planes. Then, it carries out channel coding about each plane to achieve checking bit and multiplex them into checking bit flow B2. The decoding method is a reverse process of the encoding.

Description

technical field [0001] The invention belongs to the technical field of computer multimedia, in particular to image codec technology. Background technique [0002] The rapid development of wireless communication technology makes it possible to transmit images and videos with large amounts of data in a wireless environment. Since wireless bandwidth resources and data storage resources are limited, these images and video data must be compressed before transmission and storage to reduce the amount of data. [0003] Academia and industry have shown great concern to this issue, and have formulated image coding standards such as JPEG and JPEG2000 for images, and MPEG-1, MPEG-2, MPEG-4, H.261, H.263, H.264 and other video coding standards. [0004] Huffman coding, the core technology in JPEG image coding, is a prefix variable-length coding. The so-called variable length code is that the length of the code word compiled is different. The so-called prefix code is for any code word...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/64H04N19/89H04W4/06
Inventor 戴琼海谢旭东杨峰丁贵广
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com