306 
Basic _ _ _ _ 
disciplines 
' : 1 
i 
Related 
L disciplines 
♦ I ♦ 
GI Photogrammetry: 
I—»- • technology | 
1 • production _ 
i . 
i __ GI users' 
disciplines: 
r-*- • technology 
L_ . production (problem solving) 
Fig. 1: Interrelated disciplines 
2.1 Nev developments in basic and related fields 
Development of photogrammetrie technology is fostered by the advent 
in the basic fields especially of micro-electronics and computer 
science. New mass storage devices, fast communication means, 
powerful processors, high-resolution colour monitors, and artificial 
intelligence tools promote the development of digital techniques and 
systems. Nevertheless, difficult conceptual problems and physical 
limitations are still prohibiting a full operational maturity of 
such systems. 
The related fields, such as geodesy, cartography, remote sensing 
(RS), etc, affect the development of the photogrammetric techniques 
and vice versa. Their impact is, however, less influential than that 
of the basic fields. Some of the techniques in the related fields 
are similar and can be exchanged with minor adaptations. Hence, 
these fields can enrich each other. 
2.2 State of the art 
The given state of the art in GI technology provides the upper limit 
of the techniques for GI production, its handling, communication and 
use. In photogrammetry, the state of the art addresses the hardware, 
software, procedures, information and data, communication, quality 
control, etc. 
The future state of the art can be predicted from the current and 
past states of achievements in the basic fields, related fields and 
in the area of photogrammetry. 
2.3 GI production environment 
The techniques applied for GI production usually reflect the state 
of the art achieved 5 to 20 years earlier. The time delay between 
the new state of the art and the actually applied techniques stems 
partly from the lagging acquaintance with— and awareness of— the 
new developments, and partly from the shortage of the necessary 
Disciplines 
providing 
input 
GI technology and 
production engineering 
disciplines 
J 
I 
GI application 
disciplines 
I 
I