Invited 6 persons to prepare papers for 
presentation at Commission II's 
Symposium in June, 1994 in Ottawa, 
Canada. 
State of Science and Technology of 
Commission II Special Topic: 
The stereoplotter for the graphical 3-D 
representation of data extracted from 
stereo photographs is still the most widely 
used instrument in both topographic map 
production and industrial and 
architectural photogrammetry. 
The number of stereoplotters employed in 
the world today is estimated at 5000. 
They were manufactured between 1950 
and 1990. Stereoplotters were built with 
quite different designs. There are optical, 
mechanical, and analytical models with 
approximation solution and models with 
mathematically exact solution, first, 
second and third order models, i.e. 
expensive models featuring high accuracy 
and universality and simple, small budget 
priced models. The purchase price 
ranged between DM 50,000 and 500,000. 
Since many of these expensive machines 
are far from worn out, there is a great 
demand for: 
-  Modernization 
- complementation by digital output 
and input modules 
- linkage to computers for automation 
and increases in productivity. 
Special Topic News 
e Business Meeting May 31 - June 3, 
1994 during Symposium of 
Commission IV in Athens, Georgia, 
U.S.A. 
530 
Adam 
Adams, | 
Agi, Ben 
Agnard, 
Agouris, 
Ahuja, J. 
Alhusain 
Allam, M 
Allam, M 
Alobaida 
Andersoi 
Angers, J 
Armenak 
Armour, 
Beattie, J. 
Bellemar 
Berestesk 
Bhaumik 
Bilodeau, 
Blumberg 
Boivin, F1 
Bossler, J 
Boudreat 
Boudreau 
Bouille, F 
Bowman, 
Buffam, Z 
Cannon, ! 
Cannon, ! 
Capodica 
Castongu 
Cavayas, 
Chalifoux 
Chaly, Ch 
Chapman 
Chapman 
Chen, Fra 
Chen, Lin 
Chen, Yin 
Chichago 
Cooper, A 
Cosandier 
Cosandier 
Coulombe 
Curran, T. 
Dam, ALe 
Davis, Bri 
Deerstel, C