In the past years we developed software for aerial
triangulation, which are widely used in practice. Also,
we have some of the internationally well known
software, like BLUH (Hannover), PAT-B (Stutgart),
ORSENT (Vienna) and BINGO (Hannover). The aerial
triangulation technology is used even for large scale
mapping.
Commission lll - Theory and Algorithms
In the area of digital terrain modelling, a new terrain
description and interpolation algorithms have been
developed. Other algorithms were developed to store
and process new data models.
Particularly, in the terrain analysis and filtering, new
method and procedures have been developed.
Intensive research and development were done in the
area of digital elevation models (DEM). Digital terrain
model (DTM) which has a mesh form and cover the
whole area of the country was prepared by the use of
topographic maps (scale 1:50.000). The computer
aided design (CAD) systems will be accompanied by
increased demand on the digital elevation model's
(DEM) applications, so it is expected that the results of
research and development in this field will find their
way to utilization in real projects.
Mathematical-physical Model have been developed to
process and analysis of satellite imagery for the
purpose of practical applications like agriculture. The
processing of remotely sensed data, including
atmospheric correction, has been done successfully
by using well prepared algorithms and programs
developed by the hungarian RS community. The
national agricultural remote sensing system on the
county and country levels has almost reached an
experimental operative stage. The shaping of data
model for environment monitoring geoinformation
system has been accomplished. New reliable
algorithm was developed for the solution of spatial
recursive planning problem. An other algorithm was
developed for monoplotting procedure, which is able
on the base of already existing digital terrain model -
to determine the spatial coordinates of points by the
use of single aerial photographs.
Within the frame of the GIS/LIS'95 Central European
Conference a tutorial under the title "Basic concepts of
GIS" had been organized.
Commission IV - Mapping and Geographic
information Systems.
More than 5 analytical plotters are in operation in
Hungary. Computer systems are used for processing
and analysis procedures. Feeding the measurement
results from the analogue Instruments to the
computers and then to the map compilation
instruments have enhanced the whole process. Use of
systems like CAD or GIS (ITR, Autocad, Arcinfo,
Microstation) make it possible to store structures of
data. This mechanism represents one of the most
efficient spatial analysis procedures in classical
photogrammetry. Never the less, this procedure
guarantees the easy preparation of digital topographic
maps and digital large scale maps, and makes it easy
to insert the geometric reference field spatial data into
different GIS/LIS systems. For practical, experimental
32
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B6. Vienna 1996
and special educational purposes, digital
photogrammetric workstations are used in Hungary in
private sector, state institutes, high education
institutions. :
For ortophoto mapping we have some conventional
analogue instruments and
equipment. The use of digital ortophotomaps is
starting nowadays.
Commission V - Close-Rang Techniques and
Machine Vision .
Bundle block adjustment and stereo rectification of
normal case terrestrial stereomodels with analytical
plotters is often used method in Hungary. Software
were developed for absolute orientation and stereo
rectifications on analytical plotters.
Some projects were carried out for application of
close-range technic in industrial and medical fields.
Commission VI - Economics, Professional Matters
and Education
The education of our profession is centred around
digital image technic, image analysis and GIS system
integration. Productional practice - the technology -
doesnt follow so quickly the changes as research
does therefore beside theoretical tuition we have to
train students for engineer practice as well. This
double-task carries such contradictions in itself which
can not be solved uniformly on international level as
we have to adapt ourselves to the technical level of the
given country. One can state generally of
strengthening basic education of natural and technical
sciences upon which a versatile eventually several
levelled educational system can be built. In this
direction go we as well as several years ago in many
universities postgradual (PhD) education was
introduced. . During the past 5 years thorough
preparedness of our students was proven by the
following: seven students defended their diploma
theses at Karlsruhe Technical University, one acquired
a PhD at the University of Dundee, two students
obtained M.Sc.degrees in the U.S.A. and one in the
Netherlands.
Commission VII - Resource and Environmental
Monitoring
To analyze the information content of digital images
beside visual (perception) interpretation — math-
statistical methods are applied to obtain relevant
information. Such algorithms serving the annualization
(interpretation) of renewable earth resources
(vegetation, soil) or the non renewable earth resources
(minerals), monitoring water or atmospheric
conditions were also prepared in Hungary. Among
them in agricultural sphere crop estimation and
cropland mapping are on international level, but
definite results were born in soil and geological
sciences and environmental protection topics, too.
International Relations
Hungarian institutions and scientific bodies have
several fruitful connections with FIG, ISPRS,
EARSEL, IAF (International Astronautical Federation,
IAA (International Academy of Astronautics),
COSPAR. In several bodies our specialists are serving
computer controlled .
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