Pottery tile surface bulge detection method and system

The invention discloses a pottery tile surface bulge detection method and system. The method comprises the steps that a to-be-detected pottery tile surface image is obtained and filtering processing is performed to obtain a first image; custom sliding filter filtering, linear median filtering and interpolation low-pass filtering processing are respectively carried out on the first image so as to improve the contrast ratio of a bulge region and a background region on the surface of the pottery tile; the image bulge region is segmented by adopting a threshold segmentation method to obtain a binarized image; feature extraction is carried out on the binarized image defects, whether bumps exist on the surface of the ceramic tile or not is analyzed, and if yes, corresponding bump defect images are extracted; morphological corrosion and expansion processing are carried out on the generated binary image and the bulge defect image to obtain a bulge area, and the bulge defect is judged accordingto the bulge area, so th