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3D MULTIMEDIA PRESENTATIONS - INTEGRATING REMOTE SENSING,
PHOTOGRAMMETRIC MODELLING AND CARTOGRAPHIC VISUALISATION
M. Jobst
Research Group Cartography, Institute of GI and Cartography, Technical University of Vienna,
Erzherzog Johann Platz 1, A-1040 Vienna, jobst@cartography.tuwien.ac.at
JOBSTMedia Prisentation Verlag, Welzeneggerstrasse 84, A- 9020 Klagenfurt, office@jobstmedia.at
KEY WORDS: cartography, multimedia, virtual reality, visualisation, exploration, communication
ABSTRACT:
Recent developments in computer science have influenced the use of Geo-imagery by expert groups and the general public. The
processing methods of remote sensing results and photogrammetric recording have became more accurate, effective and the work
flow is accelerated. The results, in general, are often used for engineering, documentation purposes and for the communication of
environmental systems. By this, is meant that the understanding of the system plus its internal coherence is improved by the use of
new digital presentation methods.
Cartography, as the communication interface of different user groups, tries to find and use more effectivly methods for
communicating spatial information, by integrating the results of remote sensing and photogrammetry. With the use of multimedia, in
the field of multimedia cartography, a new integrative communication form that uses interactivity, multitasking and different ways of
coding information, can be explored. It has created a new paradigm for the visualisation of natural and cultural information related to
topography.
Within the cartographic communication process 3D multimedia cartography uses both symbolisation and generalisation to build
communication models. In addition, for very large scales, elements of the data management model, like photogrammetric models of
objects, may be directly included in these types of cartographic presentations. The focus is to understand relationships between
spatial objects using the techniques of Geo-communication.
This paper results from the integration of Geo-imagery and products from photogrammetry into the cartographic communication
process using 3D multimedia cartography. It shows the effects on common understanding in terms of information and highlights the
possibilities of software implementation methods.
1. INTRODUCTION
The introduction of digital technologies and thus the use of
multimedia components within cartographic information
processing has extended one of the main tasks of cartography,
the sustainable communication of spatially related information.
Applications in cartography range from navigation to geo-
visualisation. Navigation tasks follow the primary goal of
finding and moving to a particular location. Therefore the main
focus of this research is to understand how people navigate
through the environment. Oppositely, the purposes of Geo-
visualisation are to assist a user in understanding the Earth's
environment, and thus to support the construction of
knowledge. This target-oriented aspect, for providing a
sustainable communication system would be adequate for
cutural heritage applications.
Geo-visualisation using multimedia 3D cartography appears to
provide serious support for knowledge acquisition. Depending
on the grade of immersion, an intuitive understanding of the
visualisation is possible. This may be used to establish a
common basis within the “islands” of the reality, the mapmaker
and the user.
In order to enable an effective communication, so as to avoid
information-overload, and understanding, the virtual
environment in a cartographic application has to be simplified,
interpreted according to user needs and augmented with
multimedial components. In a large-scale view digital models
from photogrammetry may be useful. This is because overviews
of an area or a region require some simplification due to the
perception of information and semiotics.
Cultural heritage has the intent to identify, protect, conservate,
present and transmit cultural and natural objects, including
landscapes, for future generations (World Heritage Convention
1972). This is the focus of this research project, to build a geo-
visualisation product to assist the understanding of the
environment. Using multimedia ^ cartography with
photogrammetry and remote sensing appears to be a useful
*toolbox" to support the work of cultural heritage and its
function of bridging "cultural continents".
This paper describes the need for an environmental overview
and knowledge acquisition tool, applied to cultural heritage.
Advanced offerings of precision photogrammetry and
multimedia 3D have to be combined to empower a precise
working and presentation environment. Selected examples
illustrated are first steps of prototype realisation and related
cartographic research.
2. DEFINING AN APPLICATION AREA
Geo-imagery assists a wide range of application areas in spatial
related topics. Its functional qualities and characteristics enable
the bridging of “continents” in economic, natural and cultural
aspects. Hence it is also an elementary tool for understanding
and accepting cultural diversity and the resultant work of
cultural heritage.
In 1992 the World Heritage Centre was established. Its function
is to enhance the effective implementation and promotion of the
“World Heritage Convention 1972”. Therefore it serves as a
management and coordination platform with the tasks to
support the World Heritage governing bodies, whose task is to
