Portable Structure Surface Crack Detection System Based on Android PlatformHuifeng WANG, Haonan PENG, Yu TANG, Yueyuan GUAN, Yaru LIANG, Lisha WANG, Yu ZHAO, Xiaoyan WANG, Rong GAO and He HUANGWuhan Univ. J. Nat. Sci., 29 2 (2024) 154-164DOI: https://doi.org/10.1051/wujns/2024292154