Machine vision system improves the automation of production, makes it possible to work in a dangerous environment that is not suitable for manual operation, makes mass and continuous production a reality, and greatly improves production efficiency and product accuracy. The performance of quickly obtaining information and automatically processing it also provides convenience for information integration in industrial production. 1. Image recognition uses machine vision to process, analyze and understand images to identify targets and objects in different modes. Through the machine vision system, the bar codes on the surfaces of various materials can be easily recognized and read, which greatly improves the efficiency of modern production. 2. Inspection is one of the most important applications in machine vision industry, and almost all products need to be inspected. However, manual inspection has many shortcomings, and the accuracy of manual inspection is low. If you work for a long time, the accuracy cannot be guaranteed and the inspection speed is slow, which will easily affect the efficiency of the whole production process. Therefore, machine vision is also widely used in image detection. 3. Visual positioning requires that the machine vision system can quickly and accurately find the tested parts and confirm their positions. In the field of semiconductor packaging, equipment needs to adjust the pickup head according to the chip position information obtained by machine vision, accurately pick up the chip and bind it, which is the most basic application of visual positioning in the field of machine vision industry. 4. The biggest feature of industrial application of machine vision is its non-contact measurement technology, which also has high precision and high speed performance, but it is non-contact and wear-free, eliminating the potential secondary damage caused by contact measurement. 5. The application of object sorting is actually a link after identification and detection, and the image is processed by machine vision system to realize sorting. In the industrial application of machine vision, it is often used for food sorting, automatic sorting of surface defects of parts, cotton fiber sorting and so on.