GPR field dataset

We published a field dataset that includes common urban underground targets. There are 50 multi-objective samples and 100 single-objective samples, with each of the four object categories comprising 25 samples in the single-objective group, , such as pipes, cables, cavity defects, and manholes. The field data were collected from urban roads in Beijing, Changsha, and Xi’an using LTD-2600 GPR with GC400MHz and GC900MHz antennas. Expert annotations were performed by specialists in road maintenance, with cavity defects further validated through core drilling methods. The original data were preprocessed by IDSP7 software, including zero-time correction, automatic gain control, and direct wave removal, et al. Subsequently, all the processed data were converted into grayscale images, and segmented into 250×250 pixels.