The segmentation and cutout technology can realize second-level automatic subject and scene pixel-level recognition, and produce 4-channel transparent materials. It not only realizes hair-level fine cutting, but also has a good effect on scenes such as highly hollowed-out subjects and complex backgrounds. At the same time, it supports three types of needs of people, goods and fields, and can be widely used in e-commerce, retail, pan-entertainment, personal applications and other scenarios.