Image recognition method and device for grate defect of sintering machine

The invention relates to an image recognition method and device for grate defect of a sintering machine, and the method comprises the steps: continuously collecting the pictures of a sintering pallet through an industrial high-speed camera disposed above the head of the sintering machine, recognizing the position of the pallet, capturing the images when the pallet runs to a designated position, cutting a grate area, and carrying out the recognition of the grate defect of the sintering machine. Self-adaptive binarization and morphological operation are carried out on the grid section area picture for multiple times, a binarized grid section seam picture is obtained, the binarized grid section seam picture is traversed, the minimum circumscribed moment is calculated, and if the width of the circumscribed moment is larger than a threshold value, it is judged that the grid section is missing; the device comprises an acquisition module, a grid section area acquisition module, a grid section seam enhancement module