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

Method for image compression based on dual encoding mode

A technology of image compression and double coding, which is applied in image communication, digital video signal modification, electrical components, etc., can solve problems such as compression efficiency limitations, and achieve high-efficiency compression and good compression effects

Active Publication Date: 2016-08-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional JPEG image compression method, data compression is not performed according to the regional characteristics of the image, which leads to certain limitations in the compression efficiency of the method

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 for image compression based on dual encoding mode
  • Method for image compression based on dual encoding mode
  • Method for image compression based on dual encoding mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0068] The present invention mainly adopts the mode of simulation experiment to verify the feasibility of the system model, and all steps have been verified by experiment. In order to realize the image compression based on the transform domain down-sampling technology, the specific implementation steps are as follows:

[0069] Step 1, image preprocessing

[0070] Set image width W=16 θ , the image height H=16 μ , where θ and μ are both natural numbers, divided into N=(W×H) / 16 according to the classic image block method in the traditional JPEG image compression method 2 A non-overlapping square image macroblock with a size of 16×16, denoted as b 1 , b 2 ,...,b i ,...,b N ; Here, W represents the width of the image, H represents the height of the image, N represents the total number of image blocks after the image is divided, i represents the index of the image block, i∈{1,2,...,N};

[0071] Step 2, two-dimensional discrete cosine transform of the image macroblock

[0072...

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 provides a method for image compression based on a dual encoding mode. According to characteristics of different areas in an image, an efficient compression method is adaptively selected from a conventional JPEG image compression method and a conventional image compression method based on an intelligent quantization algorithm to compress each image macroblock through a rate-distortion optimization policy, so that the whole image is compressed efficiently, and different compression effects can be achieved for the areas having different contents in the image. Compared with the conventional JPEG image compression method, according to the method for image compression, the policy of adaptively selecting the efficient compression method according to the characteristics in the image is achieved, and the most efficient compression method can be provided for the different image areas.

Description

technical field [0001] The invention belongs to the field of image compression, and mainly relates to a method for adaptively selecting a coding mode according to internal characteristics of an image to perform image compression. Background technique [0002] Images are the most common and commonly used multimedia data in people's daily life. With the development of electronic information technology, the images taken by people have higher and higher resolutions, and storing and transmitting high-resolution images requires larger space and higher bandwidth. In order to save storage space and transmission bandwidth, it is necessary to use an efficient compression method to compress the original image data, so as to reduce the amount of data required to represent the image, and at the same time, it is necessary to ensure the quality of the compressed image. The most commonly used image compression method at present is a digital image compression method based on the JPEG compre...

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 Applications(China)
IPC IPC(8): H04N19/103H04N19/136H04N19/147H04N19/176H04N19/91
CPCH04N19/103H04N19/136H04N19/147H04N19/176H04N19/91
Inventor 朱树元
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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