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Analysis of the visual positioning technology of machine vision
Author:Administrator   Published in:2019-11-25 14:49

Machine vision is to use the machine instead of the human eye to make measurements and judgments. The machine vision products (ie, image capture devices, divided into CMOS and CCD) convert the captured target into image signals and transmit them to a dedicated image processing system. The distribution, brightness, color and other information are converted into digital signals; the image system performs various operations on these signals to extract the features of the target, and then controls the device actions on the scene according to the result of the discrimination.

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At present, there are many types of industrial products, and in the production process of industrial products, automatic positioning may be involved. For example, automated parts require fast and accurate installation of parts. However, some processing plants still use traditional manual positioning methods, which have the following disadvantages:

(1) Locating a single product for a long time, detecting that the worker's eyes are prone to fatigue, and are easily affected by emotions, and the positioning result is difficult to guarantee;

(2) Each worker has a slight fluctuation in the judgment criteria for the accuracy of the same kind of positioning, and the positioning standards are inconsistent, so it is difficult to guarantee high quality products;

(3) The speed of manual positioning is relatively slow. It takes a long time for a product to be accurately positioned. Manual positioning cannot meet the online positioning requirements of high-speed production lines.

Machine vision technology has a positioning function that automatically determines the position of an object and outputs the position information through a certain communication protocol. This function is mostly used for fully automatic assembly and production, such as automatic assembly, automatic welding, automatic packaging, automatic filling, automatic spraying, and more with automatic actuators (manipulators, welding guns, nozzles, etc.).

The visual positioning technology based on machine vision has been widely concerned by the majority of processors. The fully automatic visual positioning method not only overcomes the shortcomings of the traditional manual positioning method, but also exerts its own fast and accurate advantages:

(1) The positioning accuracy is high, and the positioning result is reliable and stable;

(2) The positioning speed is fast, and it can work for a long time, and can run 24 hours a day.

In the visual positioning detection system, the ability to accurately identify the direction and position of the product is the core of the system. Position detection can be divided into two steps, one is to make a standard template, and the other is to search. The visual positioning system adopts advanced image visual inspection technology to realize real-time comprehensive visual positioning analysis of high-speed moving industrial products. When the system is equipped with a high-performance color digital camera, the camera captures industrial images and transmits the image data to the image processing system, the image processing system performs a matching search for each image to accurately locate the position and direction of the product, and control the machine. Automatic equipment such as arms.

机器视觉检测设备

With the development of technology, the market and users have higher and higher requirements on the precision and quality of products. The traditional positioning methods can no longer meet the needs of users. Therefore, the industry has continuously introduced new machine vision technology.

The above is the introduction of the visual positioning technology for machine vision. Do you have a new understanding of visual positioning technology? If you want to know more about machine vision, please pay attention to our TEO Technology.


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