A Lightweight Parallel Attention U-Net for Surface Defect Segmentation of Wind Turbine Towers in Visible-Light Images. - Zeng, Fanqiang; Wu, Renchaogetu; Ma, Yinan; Zhang, Yu; Ping, Wanpeng; Yang, Songbin; Gao, Qingfei (Buildings (2075-5309), 2026)