The VGE team led by Professor Zhu Qing and Professor Hu Han from Southwest Jiaotong University won the second place in Digital China Innovation Contest 2020 · Digital Government—Innovation Application Competition of Building Intelligent, with a prize of RMB 100,000.

The Contest 2020, as a high-end professional core event and an integral part of the Digital China Summit, was hosted by the Organizing Committee of Digital China Summit and organized by Alibaba Cloud Computing Co., Ltd., etc. Totally 4,494 teams from 16 countries and regions worldwide were attracted to register for the Contest, with 5,016 contestants involved. After strict selection in the preliminary contest and intermediary heat, finally 21 teams with 4 themes were qualified for the finals. The finals were held in the form of "cloud road show", and a champion, a runner-up, and a second runner-up would be decided for each theme.

As one of the main circuits of the Digital China Innovation Contest, the Digital Government, themed by the big data in government affairs, focused on the four areas of smart ocean, public service, smart communities, and urban management to improve the government governance capabilities and level using big data, and interpret the national strategy of "Digital China". In the building intelligence general investigation, contestants were required to train models for intelligent building extraction based on 200 square kilometres of GF-2 remote sensing image and its flag data, achieving large-scale rapid and accurate extraction of building distribution through new technologies. A variety of typical building groups are distributed in Fujian Province, providing a good sample for the research on building extraction methods in this contest, including many different human settlements and land use scenarios such as cities, towns, and rural areas. Our works for the contest is "Accurate Verification of Illegal Construction of Buildings by Aero-space-land Collaboration".