Ergün, Bahadir 
  
3.PHOTOGRAMMETRIC MEASUREMENTS 
In this study, a calibrated KODAK DCS 200 (Kulur, S., 1998) and Rollei 6008 have been used for the car surface images 
then PICTRAN D and PICTRAN B digital photogrammetric software have been used for digital orientation and 
restitution.At the restitution, with using software, images are first inner oriented. Then images are outer oriented with 
additional and pass points and the 3D model.(NV=1.77u) obtained. Car surfaces defined with additional points, pass 
points and characteristic points are measured by the model. 39 digital images were used for bundle block adjustment. In 
the orientation 20 digital images have been used for whole surface. 16 digital images have been used for drawing of 
details on the car surface.(Fig:2) 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Figure 2: Photogrammetric Measurement Method 
With this used method and software the 3D model with enough quality at the CAD environment is obtained. In the most 
important part of the industrial digital photogrammetry right geometry of the convergent multistation is defined for rising 
up the precision of the photogrammetric measurements. Firstly, this aim is achieved with digital camera with suitable 
geometrical signalised 3D car surfaces model is defined with interpolation methods from the about a thousand and five 
hundred measuring points with photogrammetric methods in AUTOCAD R12 and its subsoftware Quicksurf that used the 
three digital interpolation methods. (TIN, GRID, CONTOURS). Then this 3D data that was posed, converted into the soil 
model in 3D STUDIO MAX 2.0. Another object to be analyzed was a propeller of a ship which has two simetric hard 
soft surfaces. The contours of these surfaces must be simetrically. Planning of taking photos has been include three 
critical decisions for covering 3D model. All surfaces of the propeller has been covered with at least four photos with 
multiconvergent geometry. (Dowman, LJ., 1996) Rollei 6008 metric camera with 120 mm focus length was used for 
taking photographs. In the second step images are scanned with a HP scanner with resolution of 1000 dpi. (Fraser, C. S., 
1997) In At the end of the works, for a propeller twelve photos have been taken. After the bundle block adjustment 3D 
model was obtained with epipolar geometry in a 1:1 scale. Three dimensional data was obtained by 3D restitution part of 
the PICTRAN Software (Fig:3) and a comparision ofthe three surfaces of the propeller has carried out. (Fig :4) 
  
212 International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B5. Amsterdam 2000.