Sub-Meter Urban Construction Site Mapping via a Semi-Automatic Deep Learning Framework: Nationwide Patterns and Dual-Track Renewal

The TIFFs comprise mosaicked GF-2 imagery of Qinhuangdao City. Due to the large file sizes, certain TIFFs were split into multi-part archives (e.g., mosaic_result_3.part10.rar). Hebei_UCS_Result is the extracted urban construction site (UCS) result for Qinhuangdao City. Beijing contains 500 GF-2 tiles with pixel-level labels, located in Beijing. Hebei_qinhuangdao_Boundary contains the shapefiles for Qinhuangdao City’s administrative boundary (City Boundary) and urban boundary (Urban Boundary).