The application of machine vision technology in the country began in the 90s of last century, because of belonging to new industries, products are not perfect enough and other factors, the domestic development in the last century was unusually slow. With the deepening of reform and opening up, the development of the industry needs, the rapid development of machine vision in recent years, the gradual emergence of related applications, especially in the field of industrial testing, machine vision applications more widely. Since the reform and opening up 30 years ago, the requirements for industrial testing have become higher and higher. The cost investment has also been gradually increased. The traditional contact testing has failed to meet the requirements of our customers and can not guarantee the product quality. Such needs, such an environment, led to the domestic blowout machine vision technology development, industrial testing projects are also more and more began to use non-contact optical, mechanical, electrical, visual and chemical and other comprehensive technical means to avoid In the traditional test, errors and errors occur due to fatigue and individual differences, and the detection technology gradually moves toward precision, speed and efficiency. At present, the machine vision inspection system includes a lighting system, a lens, a camera system and an image processing system. For each industry application, the machine vision related system equipment configuration needs to consider running speed, image processing speed, whether the camera adopts color or black-and-white, whether the detection target is the size or the defect, how much the field of view needs, how high the resolution needs and how much the contrast needs and many more. The high accuracy of machine vision system detection, can quickly get a lot of information and automatically processed, therefore, this technology in the field of industrial testing is widely used. In view of the traditional manual detection mode, machine vision system can replace a large number of testing workers, the "simple human eye tool" detection mode upgrade to high-precision and fast automatic test results. Machine vision system with high efficiency, high flexibility, high degree of automation and so on. In high-volume industrial production process, if using artificial visual inspection of product quality, often inefficient and low precision, using machine vision testing can greatly improve the detection efficiency and the degree of automation of production; the same time, in some not suitable for manual Dangerous working environment or workers' vision can not meet the requirements of the occasion, but also commonly used machine vision to replace artificial vision, such as nuclear power plant monitoring, wafer defect detection; and machine vision easy to achieve information integration is to achieve one of the basic technologies of computer integrated manufacturing . It is precisely because machine vision system can quickly obtain a large amount of information, and it is easy to handle automatically and integrate information. Therefore, in the modern automation production process, the machine vision system is widely used in assembly positioning, product quality inspection, product identification, product size Measurement and so on.
