Building Extraction Using High Resolution Imagery

Automatic extraction of vector lines of buildings based on aerial imagery can speed up the efficiency of modeling and save costs.The method used in this paper extracts DSM and DEM by using aerial images,and then gets the ground objects by subtracting DEM from DSM.Considering the geometric surface features,spectral features,and texture features,buildings can be extracted by segmenting aerial images.Finally,it conducts a three-dimensional reconstruction using building outline and accuracy assessment.The results show that this method can extract the building outlines rapidly and accurately.