REFRESHER COURSE ON DIGITAL PHOTOGRAMMETRY
Sokhon Phem, Karl Grabmaier
ITC, International Institute for Geo-information Science and Earth Observation
Department of Earth Observation Science, EOS
Hengelosestraat 99, P.O. Box 6, 7500 AA Eschewed
The Netherlands
(Phem, Grabmaier)@itc.nl
http://www.itc.nl/
Corresponding author: Sokhon Phem: phem(@ite.nl
Commission VI, PS WG VI/1-3
KEY WORDS: Photogrammetry, Remote Sensing, Education, Digital, Systems
ABSTRACT
Photogrammetry and Remote Sensing do have their long history. These two mature sciences with their close relationship maintain an
important role in the Geo-Information Science. They can provide a better monitoring and management of the Earth surface.
Historically, photogrammetric hardware has been changed from analogues to analytical instruments, and now in workstation, which
can digitally handle all of the photogrammetric works.
The International Institute for Geo-Information Science and Earth Observation was established in 1950 under the name International
Training Center for Aerial Survey (hence ITC). That time at ITC, the photogrammetric subjects were taught, is related to the
available analogues instruments. The courses were at the levels of: operators, technicians, postgraduate and M.Sc. But after 1973, the
Photogrammetric courses have been integrated into digital mapping techniques, also photogrammetric practical works were at the
integrated hybrid and analytical photogrammetric equipments. But the used of those equipments was not for long; rapidly the new
digital systems (from PC based to workstation) have appeared. After 1996 the photogrammetric courses at ITC have their new
opportunity to exploit on fully digital systems.
ITC realizing the fast development in digital photogrammetry and Remote Sensing is prepared to support its alumni through a
refresher course that is also very useful and informative for technologists and technicians in various surveying and mapping
organizations that were trained in obsolete methods of map productions. These above-mentioned mean that this course does not offer
to only ITC alumni but also prepared to those who learned and practiced photogrammetry elsewhere. It is a short course of two
weeks duration.
The objective of this “two weeks refresher course” is to provide the awareness about the technological developments in the field of
digital photogrammetry & Remote Sensing and to offer them opportunity to access and to take part (hand-on) in the latest digital
photogrammetric workstations. They could be as potential supporters, in relation to the development of digital Photogrammetry and
Remote Sensing sciences.
The refresher course includes lectures & practical that this directly leads to the latest developments on: Digital Photogrammetric
Systems, Orientations of Images (including Aerial Triangulation), Automatic generations of Digital Terrain Model-Orthophoto-
Mosaic, and Feature extraction for the purpose of digital mapping. The quality control of these above processes is also taught.
1. INTRODUCTION (Nigeria) and the result of implementation are elaborated in the
paper.
Regarding to the presences of today digital photogrammetric
systems, it is and it will be important to support the mapping 2. REVIEW ABOUT HISTORY & DEVELOPMENTS IN
techniques with advanced techniques by a refresher course to THE FIELD OF PHOTOGRAMMETRY
various surveying and mapping organization and/or institutions.
The main concern is to provide the awareness about the new 70 years of analogue 20 years of Analytical Today Digital
technological developments in the field of digital (1990 1970) (1970 to 1990) 1990 to ??)
photogrammetry & Remote Sensing and to offer them menit zz
opportunity to access and to take part (hand-on) in the latest Evolütionary Revolutions (Fal)
digital photogrammetric workstations. At the implementing it =
should include lectures & practical that directly leads to the
latest developments about: Digital Photogrammetric Systems, From the understanding of Fig.l, It is therefore necessary to
Orientations of Images, automatic Aerial Triangulation, provide a refresher course in digital photogrammetry to ITC's
Automatic generation of Digital Terrain Model-Orthophoto- ^ alumni and/or to technicians in various surveying and mapping
Mosaic, and Feature extraction. The quality control of these ^ organizations, perhaps these peoples were trained (in the past) in
above processes will be taken into consideration. obsolete methods related to photogrammetric mapping. À course
A refresher course on Digital Photogrammetry has been has been introduced to ITC sister institute *RECTAS" in Nigeria
implemented at the ITC's sister institute RECTAS Ile-Ife. in 2001.
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