Building Roof Wireframe

We randomly selected more than 2,100 aerial images with a size of 400×416 pixels from the AIRS dataset as our image dataset, And among them, 100 images were used for testing. To create annotation file for building roof wireframe, we drew the real lines of the building roof in Illustrator software and saved them in dxf format. Then we read this information with the help of the ezdxf library in Python, converted them to needed information and finally wrote them in pickle format. Each pickle file consists of: points (each point is represented by its (x, y) coordinates in the image), lines (each line is represented by the indices of its two end-points), the angle values of branches of each junction, line indexes, the image data, image name and so on.