Crevice inspection method in bridge quality inspection

The invention relates to a crevice inspection method in bridge quality inspection. According to the crevice inspection method in the bridge quality inspection, a machine visual technology, a modern sensor technology, a datum analyzing and treatment technology and a computer technology are merged into the bridge quality inspection, and continuous and stable crevice images of an inspected bridge areobtained, so that automatic crevice detection for bridge quality is achieved, and safe using of a bridge is ensured. The crevice inspection method comprises the steps that devices are installed, thecrevice images are collected, pre-treatment of image graying, graying level switching and image smoothing to the images is conducted, and crevice targets and image backgrounds are distinguished, so that the crevice is identified, crevice parameters are extracted, a skeleton ridge line is obtained after the crevice is thinned, burrs are removed, the crevice width is calculated, and thus the actuallargest width of the bridge