Right-angle Buildings Extraction from High-resolution Aerial Image Based on Multi-stars Constraint Segmentation and Regularization

This paper proposes a method of semi-automatic right-angle building extraction from very high resolution remote sensing imagery, based on graph cuts with the multi-stars shape constraint and regularization. The framework consists of the following steps:Firstly, the image block containing the target building is obtained by manual interaction. Next, the image block is preprocessed by bilateral filtering. Then the graph cuts with the star shape constraint is used to obtain the building objects.Finally, building object is regularized into real regular shape through corner detection and linear fitting. The experiments performed on two different region and spatial resolution aerial imageries demonstrate the stability and accuracy of the proposed method