3.4 Improvement of Photo 
Illumination 
The well proven fluorescent tube illumina- 
tion type of the BC will not be changed, but 
the original unit is replaced by an up-to- 
date unit of the same type, that allows for a 
100% disturbance-free adjustment over the 
whole brightness range. 
3.5 Extended Choice of 
Application Software 
As illustrated in Fig. 1, various platforms 
may be connected to LMT by serial com- 
munication. One of these platforms is the 
Unix-PC, where users of original BC's can 
run their usual application software, includ- 
ing the PFKBS support. 
However, after upgrading, there is a range 
of application software provided by Leica 
that the user could choose from, e.g. with 
PC-Pro600 the user is able to capture data 
and do mapping inside the MicroStation® 
CAD system, based on orientations per- 
fomed either with MSU model setup soft- 
ware for aerial photogrammetry, or with 
MAAS-CR for close range photogrammetry; 
he could do mapping inside Leica's INFO- 
CAM GIS system, running on DEC VAX- 
VMS and AXP-VMS. 
4. Conclusion 
With the new Leica AVIOLYT upgrade kit 
the user gets new hardware and software 
for his BC stereo viewer. 
The hardware part of the upgrade allows to 
remove old components that cannot be re- 
placed by identical units any more. This re- 
duces the risk to loose operationality in 
case a hardware component fails. 
The software upgrade integrates the stereo 
viewer into Leica's concept of the Photo- 
grammetric Workstation, giving the user a 
bigger choice from various application 
  
platforms and software packages, including 
his familiar AVIOLYT application software. 
References: 
Cogan, Luis; Hinsken, Ludger 1992: "The 
Concept of a Photogrammetric 
Workstation Outlined by the Example 
of the Leica SD2000". International 
Archives of Photogrammetry and Re- 
mote Sensing VOL XXIX Part B2, 
Washington 1992 
Hinsken, Ludger; Meid, Alfons 1993: "The 
Use of Leica's Universal Analytical 
Photogrammetric Workstations for 
Close Range Applications". In "Op- 
tical 3-D Mesurement Techniques lI", 
Wichmann Verlag GmbH, 1993, 
ISBN 3-87907-254-X 
Acknowledgement 
| wish to thank Martin Stampfli, electronics 
engineer at Leica PMU, as well as the 
Technical Service Group at Leica Heer- 
brugg, particularly Norbert Lámmer and 
Cedric Messner, for their excellent contribu- 
tions to the upgrade development. 
3 MicroStation is a trademark of Bentley Systems, Inc. an Intergraph affiliate. 
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