technique for producing topographical and
other maps with the use of aircraft and
satellite base imageries". We can conclude
that digital photogrammetry (in one form or
another) will be the way of the 21st
century.
Rapid technological change and the
consequences of that change have had
profound affects on academic institutions.
Some of these trends and their consequences
have been:
* Equipment becomes obsolete after a
short period of time and replacement
costs are often prohibitive.
* Much modern hardware and software
involves the necessity of maintenance
contracts. These are often expensive
and recurrent rather than a once only
cost.
* As course content becomes obsolete and
new knowledge and methods emerge,
there are significant pressures and
Stress on . staff to be able to
relinquish the teaching of the
obsolete, recognise the emerging
trends and become competent and able
educators in the constant flow of new
(and old) knowledge.
* The problem of teaching now to
students who will graduate in 3 or 4
years time. The rapid rate of
technological change could very well
make current knowledge of limited
value to the prospective graduate.
* The breakdown of the concept of
disciplines has meant that
undergraduate programs are becoming
more multidisciplinary and generalist.
As such, photogrammetry may become the
domain of a wider range of
undergraduate courses with detailed
study becoming the domain of
postgraduate studies.
These, and other problems, mean that we
must take stock of our current techniques
and methodologies. To effectively educate
in the modern era we must question
assumptions that we have held for many
years. The problems and difficulties
arising out of the current process of rapid
change do need to be faced. We do have to
resolve the difficulties outlined above.
We cannot turn our back on change, if we
were to do this then other groups,
accepting of change, would soon make us
irrelevant and obsolete. By addressing the
challenges and developin innovative
solutions to difficult oR we will,
hopefully, retain our relevance and
purpose.
9. PHOTOGRAMMETRY, AND
GIS/LIS.
IS A NEW NAME JUSTIFIED?
REMOTE SENSING
In 1980 the then International Society for
Photogrammetry (ISP) changed its name to
the International Society for
Photogrammetry and Remote Sensing (ISPRS).
This change reflected the evolution of
interests and activities of the members and
of the discipline area. The ISPRS journals
of the 1980's are dominated by articles on
remote sensing even though pure
photogrammetry articles have always
appeared regularly.
302
The formal ISPRS definition of
photogrammetry and remote sensing
"Photogrammetry and Remote Sensing is
the art, science and technology of
obtaining reliable information about
physical objects and the environment
through the process of recording,
measuring and interpreting imagery and
digital representation thereof derived
from non-contact sensor systems"
is an appropriate one and reflects the
natural integration between photogrammetry
and remote sensing.
In recent years the number of articles on
Geographical Information Systems has been
on the increase with the same evolutionary
trend as was the case for remote sensing of
the late 1970's. The integration of the
three areas of photogrammetry, remote
sensing and geographic information systems
is very neatly linked through digital or
softcopy photogrammetric systems which are
now commercially available.
Perhaps it is again time to change the
society's name to the International Society
for Photogrammetry, Remote Sensing and
Geographical Information Systems. Such a
long name would be a true description of
the current situation but for most cases
the name is just too cumbersome.
The recently formed Department of
Geoinformatics at the Institute for
Aerospace Survey and Earth Sciences (ITC)
reflects the growing integration of
technologies in the geoinformation process
and the need for cooperation between the
various components of the surveying and
mapping discipline. The former departments
of Photogrammetry, Aerial Survey and Remote
Sensing have been reorganised into the
division of Aerospace Data Acquisition and
Photogrammetry and the division of Image
Processing of Remotely Sensed Data. These
two new groups together with the former
department of Cartography and a newly
created Applied Information and Computer
Science group have become divisions of the
newly formed department (ITC, 1991). The
names of photogrammetry and remote sensing
have been retained in the structure but not
at the primary level.
Laval University in Canada uses the term
Geomatics to describe the integration of
disciplines. The name, while incorporating
photogrammetry and remote sensing, gives
the information aspect the emphasis with
the following definition as reported by
Groot (Groot, 1991):
"Geomatics is the field of scientific
and technical activities which, using a
systemic approach, integrates all means
used to acquire and manage spatially
referenced data as part of the process
of producing and managing spatially
based information"
Towards A New
1991) concentrates
photogrammetric
Leberl in his paper
Photogrammetry (Leberl,
on contents of the
discipline rather than favouring a
particular name although he refers to a
range of those being used or proposed. He
presents the view that the technological
and scientific basis of digital or softcopy
photogrammetry can be defined by computer
science and that it is the application only
that provides for the survival of the
discipline within Surveying and Mapping.
Leberl also expresses the opinion that
photogrammetry will continue to survive and
possibly find broader acceptance, whatever
the name and in whatever academic context.