Automatic Detection of Weld Defects in Pressure Vessel X-Ray Image Based on CNNWenkai XIAO, Xiang FENG, Shuiyu NAN and Linlin ZHANGWuhan Univ. J. Nat. Sci., 27 6 (2022) 489-498DOI: https://doi.org/10.1051/wujns/2022276489