The original manual inspection was mainly to solve the problem that white films and dirty films came down from the printing press. The quality inspection in the later stage is mainly based on sampling. However, for the workload of tens of thousands of copies per class, sampling inspection can not perfectly solve the problems of right and wrong, how many copies are attached, whether they are repeated or not. In other words, the quality problems of books produced by hundreds of people in the post-process workshop due to careless operation are unlikely to be completely discovered and eliminated by several quality inspectors. The careless operation of workers is a phenomenon that is difficult to eliminate in management.

The automatic inspection system of Beijing Rongcheng Technology Co., Ltd. belongs to machine vision inspection. Considering the possibility of pasting books on the gluing machine, each collating station can choose graphic mode, white page mode, bar code mode and so on. Several modes are also set in the detection accuracy, and detection algorithm means such as extremely high precision and high precision are also provided in the detection algorithm. The error prevention rate is close to 100%.