Crack identification method, system and device and storage medium

The invention discloses a crack identification method, system and device and a storage medium. The method comprises the following steps: acquiring a to-be-identified crack image; inputting the crack image into a multi-layer feature extraction layer for feature extraction operation to obtain a multi-scale first feature; the advantages that the small-scale features facilitate detection of large-size cracks and the large-scale features facilitate detail information representation are combined; performing compression operation on the first features of each feature extraction layer through a convolution kernel to obtain multi-scale second features; the data complexity is reduced through feature compression, and subsequent calculation redundancy is avoided; respectively inputting the second features of each scale into a curve structure limiting module to carry out constraint limiting operation to obtain a third multi-scale feature; the curve structure characteristics are highlighted; based on a preset scale, perfor