Engine numbers are printed on the engine by branding. When taking images of engine numbers, they are also easily affected by shadows, resulting in uneven brightness of fonts and backgrounds, which makes it impossible to read the numbers by machine. Even with artificial visual inspection, it is still difficult to quickly identify the codes on the engine on the production line.Using the Segmentation technology of Solomon SolVision AI image platform, the model is trained with image samples of different brightness and optical character recognition (OCR) is performed to convert the engine number in the image into numerical information, which is immediately logged into the original database system and linked to the VIN.