GEOMATICS APPLICATIONS FOR DEVELOPING COUNTRIES
A. Biasion, P. Boccardo, F. Rinaudo
Dipartimento di Georisorse e Territorio
Politecnico di Torino
C.so Duca degli Abruzzi, 24
10129 Torino, Italy
e-mail: andreabia@libero.it ; piero.boccardo@polito.it; fulvio.rinaudo@polito.it
Commission VI, WG VI/4
KEY WORDS: Photogrammetry, Remote Sensing, GIS, Developing Countries
ABSTRACT:
This paper describes a methodology for the use of geomatics techniques suitable for land planning in developing countries; particular
attention has been paid to infrastructural planning in rural areas as a support for decisional processes in local development projects.
Digital photogrammetric techniques have been used to produce medium scale digital maps, using paper print copies of aerial photos,
and ground control points acquired by using GPS receivers. Landsat 7 remotely sensed Thematic Mapper images have been used to
produce orthoprojected supports suitable in areas where no digital maps were available.
All this different data has then been implemented in a GIS suitable for data archiving, spatial analysis and land planning.
This methodology has been applied by an Italian NGO (Non Governmental Organization) in a local development program in Mboula
rural community, Louga region, Senegal.
1. INTRODUCTION
The purpose of this work is the elaboration and verification of a
methodology for the use of geomatics instruments in local
development and cooperation projects in developing countries.
This project stems from joint efforts between the Department of
Georesources e Territory of the Polytechnic of Turin, and the
association Engineering Without Frontiers (Ingegneria senza
Frontiere, ISF) of the same, and between this association and
the NGO CISV, from Turin, which has been working in Mboula
rural community, Louga Region, Senegal since 1988.
The NGO's basic requirement of field workers, is that they have
some instruments to guarantee a rigorous metrical description of
the region in question, in order to fill a historical void in
medium scale cartography, which is also useful as
communication support with local population representatives. In
addition the project allows a data set collected in the field by a
local work group (on behalf of the NGO) to be linked to a
diagnostic process, which lasted a few months.
Seeing the availability of this data, and observing the Senegal
state public administration experiences, and that of the Louga
region in the cooperation project with the Piedmont region, the
NGO decided to introduce geomatics instruments as decisional
support in local projects. Moreover, the opportunities given to
us to spend five weeks in the field, employed in a local
development project of decisional support to local rural
communities of Mboula, in Senegal during summer 2002,
allowed us to develop a practical example where the
methodology proposed found an application.
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2. CARTOGRAPHY PRODUCTION BY MEANS OF
PHOTOGRAMMETRY
In detail, the first phase of the work concerned the use of
photogrammetric techniques. During the time spent in Senegal,
we obtained at the cartographic office of the Transport Minister
in Dakar, Senegal, called Direction des Travaux Geographiques
et Cartographiques all the public photogrammetric items
available. That, in detail, means that we bought 47 aerial photos
at 1:50.000 scale (5 strips) and 18 photos at 1:60.000 scale (2
strips), parts of a flight in the sub-Saharan area in the 1970s.
The practical example was developed on a Menci software
platform called 3D Navigator, using the modules Stereo View
Image Builder and Stereo View Triangulation.
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