8 
Analytical instruments 
1980 
1984 
1988 
Analytical plotters 12 20 15 
Videomappers - - 6 
In addition, the past five years or so have seen a rapid 
increase in the number of systems for digital image processing, 
with hardware and software being ready for application in 2.2 
differential rectification and the compilation of digital 
terrain models. 
Something new that is just leaving the trial stage is the 
n 2.3 
"integrated system" concept. The coupling of various hardware 
modules and a system software package makes such systems 
suitable for complex tasks. They are extremely flexible in 
adaptation to the mapping or measuring task in hand, satisfy 
highest accuracy requirements and allow recordinq and data 
2.4 
extraction times to be minimized to the point of real-time 
operation. 
The present trend is characterized by the expanding use of 25 
personal computers and of very fast computer systems for image 
processing. These systems include peripherals of constantly growing 
capabilities, such as drum-type plotters, hard copy printers 
and mass memories. 2 6 
2. Main tasks and objectives of Commission II 
In 1988, Commission II changed its name from "Instruments for 
Data Reduction and Analysis" into "Systems for Data Processing 
and Analysis". This was to reflect the fact that the subject 
matter of our work had substantially changed and that the 
objectives had to be redefined. 
2.1. It is the main task of Commission II to develop systems, 
instruments, processes and methods for the analysis, 
processing, storing and presentation of photogrammetric 
and remotely sensed primary data. Primary data may have 
been acquired as photographs taken from airborne or 
spaceborne platforms, digital image data acquired by 
means of opto-electronic scanners or radar equipment, or