Automatic board splitting method and device based on digital image processing, and terminal

The invention discloses an automatic board splitting method and device based on digital image processing, and a terminal, and the method comprises the steps: obtaining a copper-clad plate image corresponding to a to-be-split copper-clad plate, and carrying out the preprocessing of the copper-clad plate image, and obtaining a preprocessed copper-clad plate image; performing edge detection on the preprocessed copper-clad plate image to obtain a gummosis contour image; extracting a target copper-clad plate image according to the gummosis contour image; obtaining image size information of a single copper-clad plate, and determining a plate dividing line according to the image size information of the single copper-clad plate and the target copper-clad plate image; and dividing the to-be-divided plate according to the plate dividing line and the target copper-clad plate image. The copper-clad plate image of the to-be-split copper-clad plate is processed, so that the target copper-clad plate image and the plate spli