Application scenario Electrophoresis, Intermediate coating and Finish coating line in passenger car coating workshop; Station information A head and tail end paint surface quality detection station at the drying outlet; Solution value Substitute labor: It can replace 8 detection workers/double shift, 150,000/person/year, 1.2 million/year; Pay Return ratio 2 ~ 3 years; 2.1 Automatic classification of defects, digital presentation of defect location, category, etc. Providing a data base for process optimization; 2.2 Realize the closed loop of "spraying-detection-repair" and provide the data base;