In order to realize the accurate and efficient detection of concrete cracks, a concrete crack detection model YOLO-CCD based on YOLOv8 s is proposed. The multi-scale convolution module PSConv (poly-scale convolution) is introduced to enhance the learning ability of cross-scale features and improve the detection effect of small cracks and cracks in complex backgrounds. The efficient channel attention (ECA) mechanism is used to enhance the dependence between feature channels and optimize feature representation. The SIoU loss function is introduced to optimize the bounding box regression process by comprehensively considering the geometric features, so as to improve the detection accuracy of the model. Compared with the YOLOv8 s model, the average accuracy mAP50 and mAP50-95 of the improved model are increased by 7.9 % and 2.4 %, respectively. Compared with other detection methods, the model proposed in this paper has significant advantages in detection accuracy and computational efficiency. The research conclusion provides a new feasible method for concrete crack detection.
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