Crack detection method and device based on prediction frame and computer equipment

The invention relates to a crack detection method and device based on a prediction box, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring a target image of a to-be-detected object; performing crack detection on the target image by adopting a crack detection network to obtain a plurality of initial prediction frames containing prediction confidence and position information; for each initial prediction frame, determining a candidate prediction frame of which the prediction confidence is greater than the prediction confidence of the initial prediction frame in each initial prediction frame, and determining a confidence update parameter corresponding to the initial prediction frame based on the overlapping area of the candidate prediction frame and the initial prediction frame, updating the prediction confidence coefficient of the initial prediction frame based on the confidence coefficient updating parameter to obtain a target confidence coef