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A small hole positioning method followed by a custom search area

A technology of searching area and hole positioning, applied in image analysis, image enhancement, instrument and other directions, can solve the problems of low detection efficiency and low detection accuracy, and achieve the effect of high positioning accuracy, narrowing detection range and strong practicability

Active Publication Date: 2022-06-03
智昌科技集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a small hole positioning method following a self-defined search area to solve the technical problems of low detection efficiency and low detection accuracy in the small hole positioning process

Method used

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  • A small hole positioning method followed by a custom search area
  • A small hole positioning method followed by a custom search area
  • A small hole positioning method followed by a custom search area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] refer to Figure 1 to Figure 6 As shown, the first embodiment provides a method for locating small holes followed by a user-defined search area, including the following steps:

[0034] S1', using the combination of polarizer and polarized light to obtain the original image of the initial workpiece;

[0035] S2', performing a preprocessing operation on the above-mentioned original image to obtain a first preprocessing image;

[0036] S3', high-precision positioning of the outer contour of the initial workpiece;

[0037] S4', draw the search area mask 1 ;

[0038] S5', mask the search area 1 Perform image segmentation to obtain the second preprocessed image Image of the initial workpiece 0 ;

[0039] S6', for the second preprocessed image Image 0 Contour detection is performed, and the method of screening out the outline of the small hole according to the set parameter standard can obtain the position of the small hole to be positioned on the initial workpiece (x ...

Embodiment 2

[0045] In industrial production and installation, we need to locate and install workpieces of the same size and model in large quantities. During the process of locating small holes for different workpieces of the same model and size, the incoming material position of each workpiece is not fixed. , the small hole cannot be guaranteed to be inside the fixed search area every time. In this article, the incoming workpiece each time is called the subsequent workpiece. For the positioning method of the small holes on the subsequent workpieces where each incoming material position is different from the set initial workpiece position, refer to Figure 7 , including the following process:

[0046] S1, select a workpiece with a reflective surface to be positioned as the initial workpiece;

[0047] S2, image acquisition is performed on the initial workpiece selected in step S1; the initial workpiece is photographed by a combination of polarizer and polarized light to obtain an original...

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Abstract

The invention relates to a small hole positioning method followed by a self-defined search area, which includes selecting an initial workpiece, positioning the initial workpiece, setting a small hole search area, calculating the offset and rotated search area of ​​the subsequent workpiece, and dividing the search area The image and the steps of locating the small hole; this method can define the shape of the search area, narrow the detection range, search in a specific search area, and add the function of following the search area to locate the workpiece with a deviation in the position of the incoming material, according to The workpiece position deviation calculation follows the search area, identifies and screens the small holes in the search area, and determines the position of the small holes, thereby greatly improving the detection efficiency and detection accuracy. The small hole locating method of the invention can quickly and accurately locate the small holes, has high positioning accuracy, meets the requirements of industrial production, is easy to operate, and has strong practicability.

Description

technical field [0001] The invention belongs to the technical field of machine vision, and in particular relates to a small hole positioning method followed by a user-defined search area. Background technique [0002] Machine vision is a rapidly developing branch of artificial intelligence. Simply put, machine vision is to use machines instead of human eyes to make measurements and judgments. The machine vision system converts the captured target into an image signal through machine vision products, and transmits it to a dedicated image processing system to obtain the morphological information of the captured target, and converts it into a digital signal according to pixel distribution, brightness, color and other information; image system Various operations are performed on these signals to extract the characteristics of the target, and the operation of the equipment in the field is controlled based on the result of the discrimination. Among them, pinhole positioning is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T5/00G06T7/13G06T7/181G06T7/70
CPCG06T7/0004G06T7/70G06T7/13G06T7/181G06T2207/10004G06T5/70Y02P90/30
Inventor 田培运张庆久景登科冯浩然甘中学
Owner 智昌科技集团股份有限公司