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Mathematical Analysis of Data in Pisa (1989), then we had a 
tutorial as pre-event of the Commission III symposium in 
‘Wuhan (1990), a next one during the Commission VI 
symposium on Rhode Island (1990), a tutorial as pre-event of 
the conference on Digital Photogrammetric Systems in Munich 
(1991), as well as the tutorial before the Robust Computer 
Vision workshop in Bonn (1992). 
Last but not least the 42. and 43. Photogrammetric Week 
should be remembered, which were organized in cooperation 
of Carl Zeiss, Oberkochen, and the Institute of 
Photogrammetry, University of Stuttgart. Both events dealt 
with research problems and applications in sensor integration 
(GPS, Laser), digital photogrammetry, and Geographic 
Information Systems. As the increasing number of 
participants showed - in the 43. PhoWo participated more than 
400 persons from 40 countries - these very special events are 
even more popular with regard to educational aspects. 
The presentation of research results was done during the above 
named workshops, symposia and conferences. Moreover, the 
annual events of the DGPF gave further opportunities for 
presentations and discussions: in Braunschweig (1988), 
Freiburg (1989), Darmstadt (1990), and Cologne (1991). The 
DGPF is also structured in several working groups; the ISPRS 
Commission III is closely related with the DGPF WG Geo- 
Information Systems (Chairman: H. Ebner, Munich) and the 
DGPF WG Image Analysis (Chairman: B. Wrobel, 
Darmstadt). 
A further educational event was the Karlsruhe GIS Conference 
(KAGIS) which was organized besides geographers by 
members of DGPF. 
6. Scientific and Professional Associations 
The German Society for Photogrammetry and Remote Sensing 
(DGPF) is on the one hand as an institution embedded into 
further scientific and professional organizations, on the other 
hand the individual DGPF members transfer interests of DGPF 
into further associations. 
In this context it should be mentioned that the German Society 
for Pattern Recognition (DAGM) takes notice of DGPF; in the 
annual DAGM conferences more and more photogrammetric 
contributions could be found. The umbrella organization for 
the DAGM is the German Society for Computer Science 
(DGI), thus there exists a direct link between computer science 
and photogrammetry. 
The DGPF is also under the umbrella of the Alfred-Wegener- 
Foundation (AWS) which cares for all affairs of the geo- 
sciences. The first event of the AWS was the geotechnica’91 in 
Cologne. Within this congress and exhibition the DGPF was 
dominant in particular in the congress organization and 
presentation of scientific papers - also DGPF’s Annual 
Convention went parallel with the geotechnica. Further 
scientific and professional organizations of the AWS are the 
German Association for Surveying (DVW) and the German 
Society for Cartography. 
A further institution organizing a big scientific event is the 
EGIS Bureau in Utrecht, The Netherlands, which organizes 
the annual European GIS (EGIS) conferences. Also here 
members of DGPF contributed very much in 1990 - 1992. At 
least we should name the AM/FM GIS International European 
Division as a forum for photogrammetry, remote sensing, and 
GIS. 
39 
COMMISSION IV 
(Dr.-Ing. R. Bill) 
1. Development of Satellite Image Maps 
Buchroithner (1989) and Gierloff-Emden (1989) deal with 
remote sensing cartography using satellite exposures in their 
contributions for the encyclopedia of cartography. Wieneke 
(1988) treats methods of satellite image evaluation based on 
selected examples. Photogrammetry and remote sensing make 
new products available for the purposes of cartography such as 
satellite image maps. Various contributions, e.g. from Albertz 
et al. (1989) or Baetz & Haydn (1989), illustrate the benefit of 
satellite data as the basis for thematic mapping. In the past 
period of the commission not onla analogue (such as Leipzig 
1:50000 with KFA 1000 photos) but also digital satellite image 
maps (such as Diisseldorf 1:40000 and Berlin 1:100000 with 
Landsat and Spot data - Kühler, 1990) have come into being. 
An increasing number of maps resulting from the combination 
of metric camera data and digital recording (e.g. Stuttgart 
1:50000 with KFA 1000 and Landsat TM) have appeared. 
Michaelis (1989) investigates the topographic potential of Spot 
data. 
2. Digital Terrain Models 
One is turning more and more to the integration of raster data 
processing for the derivation of digital terrain models (DTM) 
(Tang, 1991). Fritsch (1991) treats the integration of DTM in 
GIS. For many future non-cartographic applications the 
change from twodimensional to 2.5-dimensional GIS linked 
with DTM will become an indispensable condition for the use 
of GIS technology. Kuhn (1989) produces digital perspective 
images thereby taking the DTM into account; synthetic objects 
may be included, too. 
Major progress hzs been achieved with the automatic 
derivation of D'1Ms from scanned aerial photographs. Initial 
investigations carried out at the University of Stuttgart (Comp. 
PhoWo, 1989) are working towards automatically deriving a 
DTM using a pyramidal densification of image information 
and computing the masspoints via feature-based matching. 
This approach is close to productivity (Match-T (Inpho 
GmbH) and PhoWo, 1991). 
3. GIS 
The establishing of the ATKIS project within the land 
surveying departments in the F.R.G. and the Institute of 
Applied Geodesy (ATKIS, 1988; GIS 4/1990) is characteristic 
of the past congress period. Some states started the data 
collection for the digital landscape model 1:25000 (DLM 25/1) 
in 1990; presumably it should be available for the whole 
country at the end of 1995. Photogrammetry has up to now not 
been used as a data acquisition method. But it should be 
applied for revision and updating of ATKIS data. 
Photogrammetric products, however, are most certainly 
implemented such as the analogous orthophoto as the basis for 
digitizing in combination with the topographic maps DGK 5 
and TK 25. In this context the DTM increasingly gaining in 
importance as information for the relief in order to produce a 
digital situation model (DSM) from the DLM. 
Some contributions deal with the automatic conversion from 
raster to vector data followed by a pattern recognition process 
(Yang, 1989; Illert, 1990). Various research activities on the 
presentation as opposed to the acquisition of data investigate in 
particular the problem of generalisation (Meyer, 1989; Jäger, 
1990). Peterle (1990) implements image processing methods 
for the revision of topographic maps. In all these contributions