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

Method and system for extracting lines from image

An image-in-image technology, applied in image analysis, image data processing, instruments, etc., can solve the problems of incomplete and inaccurate line extraction, and achieve the effect of improving accuracy

Inactive Publication Date: 2012-07-04
方正国际软件(北京)有限公司 +1
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a method and system for extracting lines from images to solve the problem of incomplete and inaccurate extraction of lines in the prior art

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 system for extracting lines from image
  • Method and system for extracting lines from image
  • Method and system for extracting lines from image

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0029] figure 1 is a schematic diagram of the main steps of the method for extracting lines from an image according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0030] Step S11: Obtain a difference image according to the color difference between the image and the preset sample point;

[0031] Step S12: Binarize the difference image to obtain a candidate line region image;

[0032] Step S13: Determine the skeleton line of the candidate line area image that meets the preset conditions;

[0033] Step S14: expanding the skeleton line with a preset width to the skeleton line meeting the preset condition;

[0034] Step S15: Using the image as a reference, perform reference filtering on the expanded skeleton line;

[0035] Step S16: Binarize the filtered image to obtai...

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 discloses a method and a system for extracting lines from an image so as to solve the problem that the lines are incompletely and inaccurately extracted in the prior art. The method comprises the following steps of: obtaining a difference image according to color difference between the image and a preset sample point; performing binarization on the difference image to obtain a candidate line area image; determining framework lines which accord with preset conditions in the candidate line area image; expanding the framework lines which accord with the preset conditions in a preset width; performing reference filtering on the expanded framework lines by taking the image as a reference; and performing binarization on the filtered image to obtain the lines in the image. Due to the technical scheme, the accuracy of extracting the lines is improved.

Description

technical field [0001] The invention relates to a method and system for extracting lines from images. Background technique [0002] The lines or lines in the image are very important basic features for image processing and image understanding based on image content. By extracting the lines in the image, the image can be further processed and understood. The line extraction method is very important. application value. [0003] At present, the existing methods roughly include the following two categories: (1) regard the line as a ridge or valley in the image, estimate the second-order partial derivative matrix of the image at each point, and after decomposing the eigenvalues ​​of the second-order partial derivative matrix, the maximum or the smallest eigenvalue corresponds to the intensity of the ridge or valley, respectively, and the direction of the corresponding eigenvector represents the normal to the line. Non-maximum suppression is performed on the normal direction of ...

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): G06T7/00
Inventor 唐志峰袁梦尤杨镜乔雷杰
Owner 方正国际软件(北京)有限公司
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