6. Image Processing with Planicomp 
  
At the 1984 Rio Congress already, a report was presented on correlation 
as the first digital image processing application for the Planicomp /4/. 
Two Hamamatsu C 1000-35 CCD cameras have been attached to the Planicomp of 
the Photogrammetric Institute of the University of Stuttgart (F. Ackermann 
et al), and connected to the HP 1000 computer of the Planicomp (Fig; 2) 
through a camera control unit and parallel interfaces. The CCD cameras 
supply digitized (8-bit) half-tone data with a pixel size of currently 
20 um covering an image area of 5 mm x 6 mm. These digitized image areas 
can be accessed column by column by an application program using appro- 
priate routines and drivers. 
  
  
  
  
  
  
  
  
  
     
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
pa PLANLCOMP CI100 
COMPUTER HP1000 
fo = = LTTE SN ed SER re rh = 
| | | 
Sl | | | 
T X a | | SOFTWARE | 
ep) pee MEMORY 
g | | ; | | DRIVER 
| beam- 
| eo = 3) splitter | | 
| FA lens | | 1 | 
A : MONI - | | 
| s sel TOR 1/0 INTERFACE 
| C1000-35M | | | 
|. em emm ae cud r LY Te um zl 
| 
A/D-CONVERTER M1004 | 
| | 
| ! | 
| DMA INTERFACE M999-07 | 
m | | 
ELLE À 
CONTROL UN I ! 
Fig. 2: CCD Camera Attachment For Digital Image Processing with the 
Planicomp 
r 
The development work on precision correlation with sub-pixel precision 
/5/ having been more or less completed, further actions now concentrate 
on coarse correlation, point transfer by means of image matching, and the 
assembly of a practical package of image correlation application programs. 
Because automatic terrain elevation measurement still presents problems, 
the first application package will serve to automatically measure indus- 
trial object surfaces. In this field, the following conditions are more 
y favorable compared to geographical elevation measurement and therefore 
er more promising: 
0 
553