Abstract
In this research, we investigated using unmanned aerial vehicle (UAV) photographic technology to prevent the further expansion of unauthorized construction and thereby reduce postdisaster losses. First, UAV dynamic aerial photography was used to obtain dynamic digital surface model (DSM) data and elevation changes of 2–8 m as the initial sieve target. Then, two periods of dynamic orthophoto images were superimposed for human–computer interaction interpretation, so we could quickly distinguish buildings undergoing expansion, new construction, or demolition. At the same time, mobile geographic information system (GIS) software was used to survey the field, and the information gathered was developed to support unauthorized construction detection. Finally, aerial images, interpretation results, and ground survey information were integrated and released on WebGIS to build a regulatory platform that can achieve accurate management and effectively prevent violations.
Highlights
Over the past 40 years since China’s reform and opening up, the pace of urban construction has dramatically increased [1]
We developed an initial screening tool that gathered digital surface model (DSM) data from unmanned aerial vehicle (UAV) remote sensing to automatically recognize changes in building elevation [14]
The main method for managing illegal building is to use a regulatory platform to supervise a series of functions, such as target image recognition, field verification, investigation and process monitoring, and historical tracking of illegal buildings
Summary
Over the past 40 years since China’s reform and opening up, the pace of urban construction has dramatically increased [1]. Between 2000 and 2005 alone, the total area of China’s provincial capitals increased by 90.15%. Between 2000 and 2010, China’s urban area grew by 101.04% [2,3].
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