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Pattern recognition and positioning method based on flexible material

A graphic positioning, flexible material technology, applied in character and pattern recognition, instruments, calculations, etc., can solve problems such as deformation, inaccurate positions identified by positioning, and inability to identify graphics, and achieve the effect of reducing errors.

Active Publication Date: 2021-03-09
武汉舜陈技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flexible materials are very prone to stretching and deformation. When using this method, the position identified and positioned is inaccurate. The error is also caused by the stretching and deformation of the material. This method has no way To calculate the error, it is also impossible to perform graphic positioning recognition on materials without obvious features

Method used

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  • Pattern recognition and positioning method based on flexible material
  • Pattern recognition and positioning method based on flexible material
  • Pattern recognition and positioning method based on flexible material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] S1: Use CAD drawing tools to make graphic positioning templates (such as image 3 shown), and draw the positioning graphics and edge line graphics on the graphic positioning template.

[0065] Specifically, draw an irregular polygon (using blue lines) to represent the positioning figure, which is the physical line; draw two straight lines (using green lines) on the graphic positioning template to represent the edge line figure, which is the simulated positioning line , the coordinates are (x,y);

[0066] Group the positioning graphics and edge line graphics in the graphic positioning template; if there is a positioning graphic close to the first line (line No. 1), place the positioning graphic close to the first line (line No. 1); For the positioning figure of the second line (line No. 2), place the positioning figure close to the second line (line No. 2). According to the above-mentioned placement rules, the positioning figure does not overlap and the positioning figu...

Embodiment 2

[0095] S101: Use CAD drawing tools to make a graphic positioning template (such as Figure 6 shown), and draw the positioning graphics and edge line graphics on the graphic positioning template.

[0096] Specifically, draw an irregular polygon (using blue lines) to represent as a positioning figure, which is a physical line; draw two wavy lines and two straight lines (using green lines) on the figure positioning template to represent as an edge line figure, is the simulated positioning line, the position is (x, y) coordinates;

[0097] Group the positioning graphics and edge line graphics in the graphic positioning template; if there is a positioning graphic close to the first line (No. 1 wavy line), place the positioning graphic close to the first line (No. 1 wavy line); if If there is a positioning figure close to the second line (wave line No. 2), place the positioning figure close to the second line (wave line No. 2). According to the above placement rules, the positioning ...

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Abstract

The invention provides a pattern recognition positioning method based on a flexible material, and the method comprises the following steps: manufacturing a pattern positioning template, carrying out the calculation to obtain a pattern positioning region, and setting the left upper corner of the pattern positioning region as an origin of coordinates; flatly laying the flexible material on a platform for photographing; performing image processing and smoothing processing on the obtained image; sorting the smoothed curves; traversing all points on the edge line graph to find a first reference point; finding a second reference point on all points according to the distance Ds between the starting point and the terminal point of the positioning graph; calculating an included angle Angle1 of a connecting line from the first reference point to the second reference point; the included angle Angle1 and the included angle tan of the positioning graph are added, and the positioning graph is translated and rotated to the position where the included angle Angle1 and the included angle tan of the positioning graph are added; calculating whether the positioning pattern is intersected with other positioning patterns or not; and obtaining a graph of the flexible material positioned and identified by the graph positioning template until the first reference point cannot be found on the edge line graph or the second reference point cannot be found on the edge line graph.

Description

【Technical field】 [0001] The invention relates to the technical field of pattern recognition and positioning, in particular to a pattern recognition and positioning method based on flexible materials. 【Background technique】 [0002] The existing identification and positioning technology is carried out through the method of template matching in image processing. It is to place the material in the field of view of the camera, obtain a frame of image, find a position with the most characteristic mark in the image, and compare the position The image above is made into a feature template, and at the same time, the graphics that need to be positioned are associated with the feature template. In the actual production process, one frame of image is obtained each time, and then the acquaintance degree is calculated by comparing the features in the target image and the template image. After reaching the set acquaintance degree, the location can be located, and the associated The grap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/32G06K9/62
CPCG06V20/10G06V10/25G06V10/751
Inventor 陈琮林
Owner 武汉舜陈技术有限公司