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

Staggered line vectorization extraction and graph recognition method

A graphics recognition and vectorization technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve problems such as incomplete graphics, and achieve the effect of wide application, high vectorization accuracy and fast calculation speed

Active Publication Date: 2012-10-17
SHANGHAI UNIVERSITY OF ELECTRIC POWER +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the error caused by the position index method after the interlaced line, many incomplete graphics were obtained in the recognition result

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
  • Staggered line vectorization extraction and graph recognition method
  • Staggered line vectorization extraction and graph recognition method
  • Staggered line vectorization extraction and graph recognition method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0046] Such as figure 1 Shown, interlaced line vectorization extraction of the present invention and pattern recognition method, comprise adopting MFC Microsoft's base class storehouse on general computer platform to carry out image preprocessing and vectorization processing, concrete steps are as follows:

[0047] 1. Image preprocessing:

[0048] (1) Remove the noise points of the engineering image

[0049] (2) Binary processing of engineering drawings

[0050] 2. Vectorization processing:

[0051] (1) Acquisition of the initial central axis point

[0052] (2) Acquisition of central axis point chain scanning

[0053] (3) Judgment of the scanning condition of the central axis point chain

[0054] (4) Central axis point polyline processing

[0055] (5) Node restoration

[0056] (6) Axis Out Central Axis Point Chain

[00...

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 staggered line vectorization extraction and graph recognition method, which comprises the procedure of adopting a MFC Microsoft foundation class library for carrying out image pretreatment and vectorization treatment on a universal computer platform, and the specific steps are as follows: 1) image pretreatment: (1) removing noise points in an engineering image; and (2) carrying out binarization treatment on an engineering drawing; 2) vectorization treatment: (1) obtaining an initial middle shaft point; (2) scanning and obtaining a middle shaft point chain; (3) judging the scanning conditions of the middle shaft point chain; (4) carrying out polyline treatment on the middle shaft point; (5) recovering nodes; and (6) outputting the middle shaft point chain. The method is the vectorization graph recognition method of the engineering CAD drawing, which has the advantages of a wide range of applications, high vectorization precision, fast computation speed and the like, thereby having important significance and practical value for an engineering drawing vectorization system, three-dimensional reconstruction and other work.

Description

technical field [0001] The invention relates to a vectorization method for engineering CAD drawings, in particular to a vectorized graphic recognition method for engineering CAD drawings. Background technique [0002] In today's information society, although CAD technology has been widely used in the field of industrial design, a large amount of drawing information is still stored, managed and used in the form of paper and pictures. These engineering drawings are often accumulated by a system or industry for a long time, completely preserving the valuable experience in the past, and have a good reference for future design. A considerable part of them will be modified and reused in future design and manufacture. In order to reuse these drawings, it is an inevitable development to manage the information of these drawings and images with computers and establish a corresponding database, so as to greatly reduce the human resources consumed by the updating and maintenance of dra...

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): G06K9/20G06K9/38
Inventor 刘刚张杨钱虹
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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