Metal case scratches are very fine. Under normal light, it is difficult for personnel to detect defects visually because the metal material is easy to reflect light, which can easily lead to poor appearance quality problems.By using SolVision's Segmentation technology, a defect defect database is established for the appearance shape of defects, and specific defects are classified, such as obvious defects, fine defects and extremely fine defects. Deep learning is used to identify obvious defects and ignore acceptable minor defects. , Effectively improve the detection accuracy and speed, and ensure that the finished products on the production line can enter the assembly process without any defects.