Instant vision measuring system can replace the artificial visual inspection in many cases. The usability and repeatability of the test are improved. In addition, defects in the system can be identified and eliminated statistically. At the same time, the repetitive defect analysis, the previous production process and process are improved to improve product productivity. Machine vision can be said to be the soul window of industrial automation system. From object / barcode identification, product detection, appearance dimension measurement to mechanical arm / transmission equipment positioning, machine vision technology can play a stage. Therefore, its application range is very wide, and the industry application field is even more dazzling.