THE EXTRACTION OF 3-D STRUCTURAL LINES FOR BUILDING FACADE MODELLING

摘要

Multiple images may increase the number of observation and improve the reliability of image matching. In this investigation, we use feature-based matching for building facade. First, an initial building model is used to provide the pre-knowledge of linear features such as orientation and area-of-interest. Then, Canny detector and Hough transform are selected to extract the straight lines. Finally, we consider the epipolar geometry to constrain the location of conjugate straight lines in feature-based matching. The experimental results indicate that the directions of extracted lines and manual measured lines are less than 4 degrees.