Detailed results of the activities have been already published 
at the following symposia: 
a) the FMP-Symposium in Hannover in August 1977 
[1x /2/, 434, a4, 15], 6], (7/1187. 
b) the Image Processing Symposium in Graz, Austria in October 1977 
/9/, /1o/. 
2. Project Stages 
The various stages of the project concern 
1) data acquisition 
  
4 types of imagery have been used: 
a) Aerial photography using a Hasselblad-cam era with 
IR-false colour film and various filters. 
b) metric aerial photography of the format 23 x 23 cm on 
colour film. 
c) M?s Scanner images from aircraft in 11 channels 
d) Landsat scanner images from orbital heights in 4 channels 
2) data processing 
  
The images have first been subjected to a visual quicklook. 
Those, which showed promise for further investigation 
were viewed in transparencies on the ISI-150 image analyzer 
system for a first analysis. The image analyzer permitted 
to produce density slices in colour coding, to mixe (false) 
colour images out of 3 spectral bands and to do simple 
image processing by adding, substracting, multiplying, 
dividing two images by taking logarithms or exponents 
of images. 
A detailed analysis is possible, if the images are available 
in digital form. Photography can for this purpose be digitized 
onto tape utilizing the readsystem of the Optronics P-1700 device. 
The analysis is carried out on the general purpose computer. Due 
to current practical difficulties in managing the computer 
operations efficiently without time delays a future interactive 
system in operation of the P-1700 is envisaged. It consists of an 
enlarged ISL computer attached to the P-1700 and a Comtal image 
storage and display unit, sufficient to permit an interactive 
operation, experimenting with various image processing modules. 
A software developments first adaptions of the Jet Propulsion Labora- 
tory's Vicar System and Purdue's LARSYS-Package were forseen. 
Experiences showed, that it is better to compile own software, which 
has since been implemented. Special software has been devised in 
geometric restitution of imagery. 
The general image processing software BIVER consists of about 70 
modules incorporating various image processing tasks from grey level 
filtering to maximum likelihood classification programs of multi- 
spectral data. 
    
      
    
  
   
   
    
   
    
    
    
   
   
  
  
  
  
  
    
    
   
   
  
  
  
  
  
   
  
   
   
dT Me: 21 
IN f£ rm uw onn. 
th 2 4 2