Application history and development of machine vision in industrial inspection

- Mar 26, 2019-

Machine vision is widely used in industry, and its core functions include: measurement, detection, identification, and positioning. The industrial chain can be divided into upstream component-level market, mid-stream system integration/machine equipment market and downstream application market. Upstream of machine vision, there are software and hardware providers such as light source, lens, industrial camera, image acquisition card, image processing software, etc. Midstream has integrated and complete equipment suppliers, and the downstream applications of the industry are wide. The main downstream markets include electronics manufacturing industry, automobiles, Printing and packaging, tobacco, agriculture, medicine, textiles and transportation.

The global market for machine vision is mainly distributed in North America, Europe, Japan, China and other regions. According to statistics, in 2014, the global market for machine vision systems and components was 3.67 billion US dollars. In 2015, the global machine vision system and component market scale was With a market value of US$4.2 billion in 2016, the global market for machine vision systems and components is US$6.2 billion. The average annual compound growth rate of the market in 2002-2016 is around 12%. Machine vision system integration, estimated by North American market data, is about six times the market for vision systems and components.

China Machine Vision started its technology introduction in the 1980s. With the introduction of the entire line of semiconductor factories in 1998, it also brought into the machine vision system. Before 2006, domestic machine vision products were mainly concentrated in foreign-invested manufacturing companies, and the scale was small. At the beginning, the customer base of industrial machine vision applications began to expand into the fields of printing and food testing. In 2011, the market began to grow at a high speed. With the increase of labor costs and the upgrading of manufacturing, coupled with the rapid development of computer vision technology, The more machine vision solutions have penetrated into various fields, the size of China's machine vision market has reached nearly 7 billion yuan by 2016.

In machine vision, the defect detection function is one of the most widely used functions of machine vision, and mainly detects various information on the surface of the product. In modern industrial automation production, each process in continuous mass production has a certain defect rate. Although the ratio is small, it is difficult for the enterprise to improve the yield bottleneck after multiplication. The cost of rejecting the defective product will be much higher (for example, if there is a positioning deviation in the solder paste printing process, and the problem is not discovered until the online test after the chip is mounted, the cost of the repair will be more than 100 times the original cost). As we all know, industiral & embedded computer need to provide powerful computing ability and capability. Therefore, timely detection and defective product rejection are very important for quality control and cost control, and also an important cornerstone for further upgrading of the manufacturing industry.