Bending angle identification method, device and system

The invention relates to the field of image processing, and provides a bending angle identification method, device and system, and the method comprises the steps: obtaining a plurality of first initial images of a bending part at the current bending, and inputting the first initial images into an instance segmentation model, thereby obtaining an instance segmentation image; performing region-of-interest segmentation on the corresponding first initial image based on the instance segmentation image to obtain a second initial image of the bending surface, and determining a target cutting proportion based on the instance segmentation image; intercepting a target area image from the corresponding second initial image based on the target cutting proportion, and determining a first bending angle of the bending part at the current bending based on the target area image; and determining a bending angle identification result of the bending piece at the current bending based on each first bending angle. According to the