SWRD: A Dataset of Radiographic Image of Seam Weld for Defect Detection

In this paper, we introduce SWRD, a new public dataset containing over 3600 seam weld X-ray images, categorized into standard seam welds and T-joint seam welds. Each image is annotated with polygonal labels for specific defects, making the dataset suitable for various deep learning tasks such as classification, object detection, and instance segmentation. We also detail the defect formation mechanisms and their corresponding characteristics in X-ray images. To enhance the usability of the dataset for deep learning models, we applied several image processing techniques, including image adjustment, sliding window cropping, and preprocessing. Our experiments with the state-of-the-art YOLOv8 object detection models show promising results, with the YOLOv8m model achieving a mAP50 of 0.66 and a mAP50-95 of 0.49. Given that we used default training parameters and limited training epochs, we anticipate even better performance with further optimization. The complete dataset can be downloaded from: http://www.tz-ndt.com/#/download.