期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2002
卷号：XXXIV Part 2
页码：61-66
出版社：Copernicus Publications
摘要：The paper presents a general paradigm of semiautomatic house extraction from aerial stereo image pair. In the semiautomatic extraction system, the house model is defined as the one with multi right angles roof, then under the knowledge of the roof type, low-level and mid-level processing including edge detection, straight line segments extraction and obtaining initial house corners are used to establish the initial geometrical model of the roof-top. However, the initial geometric model is not so accurate in geometr y. To attain accurate result, an improved Hough transform with constraints and a general least squares adjustment with geometric constraints in object space is applied to refine the geometrical model. As the adjustment model integrates the straight edge pattern and 3 dimensional constraints together, it is a well-studied optimal and anti-noise method. The experimental results show that it has given rise to a computational efficiency, high accuracy and robust
关键词：Multi right angles; Semi-automatic extraction; Improved Hough transform; Global adjustment; Constraint; Object ; space
