Full text: From pixels to sequences

  
34 
3.2 Measurement of an assembly tool 
At the Daimler Benz Aerospace Airbus in Hamburg the periodical inspections of assembly tools is done with photogrammetric 
methods. In the moment the measurements are done with a RolleiMetric Large Format Camera (LFC) with an image format of 
230mm x230mm (Dold, Suilmann 1993). First investigations have been done with the ChipPack (color version in b/w mode). For 
the measurement of an assembly tool with an size of 6000 x 3000 x 1000mm? 30 images have been taken. After a bundle adjustment 
using free net conditions the RMS values parallel to the image plan are appr. 0.025mm, perpendicular to the image plane 0.07mm. 
3.3 Application in the field of architecture photogrammetry 
The following example will prove that the Rollei ChipPack can also be successfully used in architecture photogrammetry. The aim 
of this investigation was to describe the facade shown in figure 4 with the help of two different evaluation methods. The outline of 
the facade was to be determined by a graphic evaluation. Later on, parts of the facade were digitally rectified. The different 
processing steps were all carried out by the digital work station PHAUST (Woytowicz 1993). 
  
Fig. 4 : Original image of the facade 
For the graphic evaluation, three photographs were taken with a distance of about 10 m between the camera and the object, and basis 
of about 6 m. Due to the local surroundings of the object, a better configuration could not be achieved. 30 natural points were 
measured in order to determine the orientation parameters. The standard deviation of the measurement of image coordinates was 
4 um according to the bundle adjustment (carried out by CAP). The standard deviation of object coordinates was s, = 2,3 cm, Sy = 
2,5 cm and s, = 3,5 cm. A higher accurary could not be expected because of the image configuration (see above) and the 
measurement of natural points. After defining the triangulation parameters, the object coordinates of the graphic evaluation were 
determined by spatial intersection. Figure 5 shows the computer screen with three general images and one original section, each with 
the graphic overlay. 
  
Fig. 5: Computer screen with general images and original section 
IAPRS, Vol. 30, Part 5W1, ISPRS Intercommission Workshop “From Pixels to Sequences”, Zurich, March 22-24 1995 
For t 
objec 
was | 
With 
With 
conc 
grab 
lense 
sizes 
hard 
Diew 
Cam 
Dold 
Banc 
God 
Zeits 
Phot 
Woy 
A.Gı 
IAPR
	        
Waiting...

Note to user

Dear user,

In response to current developments in the web technology used by the Goobi viewer, the software no longer supports your browser.

Please use one of the following browsers to display this page correctly.

Thank you.