Crack detection method and device based on joint detection and computer equipment

The invention relates to a crack detection method and device based on joint detection, 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; inputting the target image into a pre-trained crack joint detection network to obtain a first detection result and a second detection result; the first detection result is a crack identification result corresponding to each detection area in the target image; the crack identification result comprises a crack and does not comprise the crack; the second detection result is a crack prediction frame containing category prediction confidence and position information; determining the detection area containing the crack as a candidate detection area according to the crack identification result; and determining a target detection region containing the crack in each candidate detection region according to the overlapping area of each candidate detection region and each cr