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Shih-Hong Chio 
discusses the concept of Point Database and the concept of the interactive approach. From the results of our tests, we 
believe that this system is highly practical. 
  
Fig.7 The results without interactive modification Fig.8 The results after interactive modification 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
TABLE 1: DIFFERENCE OF THE RECONSTRUCTED RESULTS AND THE REFERENCE DATA 
Original Modified Original Modified Original Modified Original Modified Original Modified 
results results results results results results results results results results 
NO. Difference of Plane Position Difference of Height Difference of Plane Difference of Areas Percentage of Area Difference 
(m) (m) Orientation (°) (m°) (%) 
] 0.34 0.36 0.22 0.27 2.85 10.48 -0.40 -1.51 1.65 6.23 
2 0.39 0.39 -0.17 -0.17 1.09 1.09 0.91 0.91 3.90 3.90 
3 0.42 0.38 0.06 0.36 12.43 5.85 -2.23 -3.59 4.61 7.42 
4 0.11 0.14 0.00 0.09 3.88 2.83 0.74 0.64 2.93 2.54 
S 0.10 0.11 0.34 0.29 5.86 3.97 2.77 -2.00 5.44 3.03 
6 0.27 0.26 0.06 0.20 2.65 5.39 1.13 1.93 4.37 7.45 
7 0.19 0.18 -0.28 -0.38 1.24 0.70 -1.17 -2.27 4.63 8.96 
8 0.36 0.36 -0.30 -0.48 S. 70 1.83 -1.12 -1.48 4.82 6.36 
9 0.24 0.16 -0.39 -0.22 6.04 4.19 1.31 -0.35 4.97 1.32 
10 0.38 0.44 -0.33 -0.27 3.05 S.37 0.78 -1.69 0.53 1.14 
11 0.35 0.35 -0.46 -0.46 1.67 1.67 1.60 1.60 5.92 5.92 
12 0.22 0.22 0.33 0.33 0.89 0.89 -1.19 -1.19 5.06 5.06 
13 0.23 0.35 -0.19 -0.60 1.73 5.88 4.47 9,82 3.01 6.62 
REFERNENCES 
Chio, S.-H., Wang, S.-C., and Wrobel, B., 1999. A Semi-Automatic System for the Reconstruction of Building Roofs in 
Dense Urban Areas Using Aerial Stereo Images Pairs: AVN ALLGEMEINE VERMESSUNGS-NACHRICHTEN, 
pp.167-174. 
Cho,Woosug and Shenk,Toni, 1992. Resampling Digital Imagery to Epipolar Geometry. Research Activities in Digital 
Photogrammetry at The Ohio State University: A Collection of Papers Presented At the XVII Congress of ISPRS, Toni 
Schenk Editor, Department of Geodetic Science and Surveying, The Ohio State University, Columbus, Ohio, pp.37-43. 
Collins, R.T., Y-Q. Cheng, C. Jaynes, F. Stollw, X. Wang, A.R. Hanson, and E.M. Riseman, 1995. Site Model 
Acquisition and Extension from Aerial Images. International Conference on Computer Vision, Cambridge, MA, 
pp.888-893. 
Fischer, A., T.H. Kolbe, and F. Lang, 1997. Integration of 2D and 3D Reasoning for Building Reconstruction Using a 
Generic Hierarchical Model. W. Fórstner and L. Plümer, Editors, Semantic modeling for the acquisition of topographic 
information from images and maps. Proceedings of Workshop "SMATI *97", pp.159-180, Bonn Bad Godesberg, 
Birkhäuser Verrlag. 
  
International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B3. Amsterdam 2000. 189