Finally, an orthoprojection as third presentation of 
common use will be shown here. Compared to the 
already shown visualizations, it is simply a somewhat 
different geometry behind this projection, allowing to 
perform exact geometrical investigations in the graphical 
plot. The structure of the object data therein allows to 
take the attribute values in order to give the connection to 
the digital images, necessary to calculate the gray values 
belonging to the surface parts (cf fig. 12). 
  
  
Figure 12: Orthoprojection for a surface part. 
CONCLUSION 
The example shown here presents a procedure giving the 
opportunity to evaluate the surface of a volume object by 
digital photogrammetric means, to establish a data 
structure giving a unique description of the 3D data 
characteristic of the object and to attach several useful 
attribute values to the metric data. These attributes are 
pre-requesite for some applications as the visualizations 
have shown, but might be helpful anyway. 
Basically, the presented solution allows any user or 
scientist from disciplines having volume objects, to 
intensively analyze or geometrically investigate these 
objects, in order to support their specific applications (cf 
Boehler W, Heinz G., 1996). Of special value is the fact, 
that this is achieved without any preparation of the 
surface, what might be important in some cases (eg 
historical paintures). 
  
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B3. Vienna 1996 
REFERENCES 
Bennat H., Boochs F., 1990. Digital Elevation Models for 
Antarctica derived from KATE 200 Images by Digital 
Image Correlation. International Archives of 
Photogrammetry and Remote Sensing, Vol 28, No.4. 
Boehler W., Heinz G., 1996: Methods of Surveying in 
Archaeology demonstrated at the Tang Emperors' 
Mausoleums. ISPRS, XVIII Congress Vienna, Commision 
V, Working Group 2. 
Boochs F., Hartfiel P., 1989. Festigung von Sicherheit 
und Zuverlassigkeit der DGM Bestimmung bei Einsatz der 
digitalen Bildkorrelation. Bildmessung und Luftbildwesen, 
Vol. 57, pp. 103-112 
Creaso, 1995. IDL (Interactive Data Language), product 
information, Gilching. 
ESRI, 1994. ARC/INFO 7.0, product information, 
Redlands, California. 
Gulch E., 1994. Erzeugung digitaler Geländemodelle 
durch automatische Bildzuordnung. Deutsche 
Geodätische Kommission, Reihe C, Nr. 418 
Jacobsen K, 1980. Vorschläge zur Konzeption und Bear- 
beitung von Bündelblockausgleichungen. Wissenschaft- 
liche Arbeiten der Fachrichtung Vermessungswesen der 
Universität Hannover 
Sande, S., 1975: Zur Porträtplastik des sechsten 
nachchristlichen Jahrhunderts. Acta ad Archaeologicam 
et Artium Historicam pertinentia 6, 67ff. Abb. 13-14. 
Spätantike und frühes Christentum. KAT: Frankfurt (1983- 
84) 469 f. Nr. 73. 
    
  
  
   
   
   
  
  
  
    
    
  
   
  
   
    
    
   
    
     
   
  
    
    
  
  
  
   
   
  
  
  
  
  
  
  
  
   
   
  
   
  
  
   
  
   
    
  
  
   
  
  
   
    
KEY WORD 
ABSTRACT 
Stereocorrel 
yields eight 
configuratioi 
point distribi 
belong to i 
consideratio 
KURZFASS 
Stereokorre 
beruht auf : 
Anordnunge 
die kritische 
der fünf C 
bedingenen 
unter Verwe 
Algebroproj 
jective im 
orientation. 
cannot be | 
isometric 
(affine) int 
points whic 
the images 
the determ 
the usual s 
set of thre 
coordinate 
homologou 
two affine 
first coorc 
coordinate 
most uncoi 
The paran 
significant 
the homog 
condition 
system of 
componen 
solution d