148 
purpose 
MULTIMEDIA SUPPORTED GIS ON THE INTERNET of 3D C 
CASE STUDY: TWO OTTOMAN FORTRESSES AND A CEMETERY ON THE DARDANELLES convent 
represei 
at all. 1 
C. Guney a \ M. Duman b , K. Uylu b , O. Avci b , R. N. Celik a represer 
functior 
a ITU, Civil Engineering Faculty, Geodesy Division, 80626 Maslak Istanbul, Turkey - (guneycan, celikn)@itu.edu.tr accurate 
b ITU, Civil Engineering Faculty, Geodesy Division, Istanbul, Turkey - (duman, uylu, avci)@itu.edu.tr - Student 2[) ma p 
pdf fori 
KEY WORDS: Multimedia, Internet, immersive, virtual reality, web programming, data acquisition, VRML, GIS, 3D aJ 
formats. 
attractiv 
ABSTRACT: Languap 
allows f 
The goal of this project is to combine advanced visualization techniques and Geographical Information Systems (GIS) to allow the animatie 
viewer to be immersed in the data, therefore increasing perception and realism. Publishing Virtual 3D GIS application through World commoi 
Wide Web (www) is another objective of the project due to cost-effectiveness and wide accessibility. This paper provides an platforn 
overview of multimedia techniques, the web, and applications in GIS and mapping. The focus is on the concepts and principles of 
design for multimedia applications, particularly the incorporation of interaction and animation for the display of maps and their j n 
distribution through the World Wide Web. languagi 
GIS pe( 
presents 
that are 
1. INTRODUCTION 2. PRESERVING NECESSITY OF CULTURAL three-dii 
HERITAGE PUSH PEOPLE TO BENEFIT FROM inexpen: 
The cultural heritage is the most important evidences regarding INNOVATIONS user an 
the past society and each object of these has valuable environr 
information about the past. Unfortunately each valuable element A map can be defined as an abstraction and a representation of visualize 
of the historical structures has been vanishing day by day reality and map features symbolize objects in the real world. surrounc 
through time, nature, and human effects. Hence, some There are long established techniques, patterns and symbols to ^¡id a ■ 
precautions are needed for protecting these historical structures summarize the real world via visual references. Historically, represen 
from the corrosion and human effects. There are also two GIS has been used to automate what people did with maps and Qt j ier ug 
Ottoman Fortresses, called “Seddiilbahir” and “Kumkale” on to help perform analysis that would be difficult, if not j 1 j st0 
Dardanelles, Turkey in the same situation, however, the project impossible, to do by hand. (Koehnen, 2002) In brief, a 
team working with these monuments believes that the fortresses geographic information system is a tool that uses various forms jj ere ¡. 
can be restored and protected only when it has been fully of data as inputs to produce a map as an output. Because these integrati« 
measured, documented and stored in proper historical maps are easier to understand than raw data, they can be used as 0 f ypjy 
information and management systems. (Giiney et al., 2002) a tool to communicate geographic information to a general dimensic 
audience. GIS is a great success in both areas, but as time goes ^j s mea 
It is with this larger, long-term goal that the team of surveyors, on, the more expected things have come. Until recently, 2D interact 
architects, historians and archaeologists began in 1997 to maps have been the only format available to visually process datasets 
working together on the Survey and Documentation Project of geographic information. This is no longer the case because 
“Seddiilbahir” and “Kumkale”. The project undertaken at the modern sensors, such as laser altimeter data, photogrammetric 
Division of Geodesy, Istanbul Technical University (ITU) and techniques and remote sensing, are providing a wealth of 
the Department of History, K.09 University; to explore a information that makes the third dimension possible in 
development of a multimedia supported four dimensional (3D + mapping. People wish to use GIS to manage data without being a j 
time) information system to aid geographically-oriented the constrained by the inherit limitations of 2D maps. In fact, ones introduci 
documentation of the two Ottoman fortresses of “Seddiilbahir” argue that including the third dimension is necessary to more informati 
and “Kumkale”. accurately model the material world.( Moore and Dykes, 1997) cemetery 
Another recent change in mapping is how we distribute map dispiayin 
Having produced all topographic maps, architectural plans and data. The internet has brought GIS information and high quality user 
historical information regarding the fortresses a base for GIS maps to any internet user's web browser. So in effect, the two historical 
was began developing. Research and comparative analyses can recent changes in mapping that have changed the science of GIS ¡ s a g g0 
be performed more effectively, accurately and visually with in recent years are internet distributed mapping and 3D manipula 
GIS. With this type of data system both the present situation of visualization. Although much work has been done, and to be worked i 
the fortresses and the condition of the fortresses in the past can sure, more development is in 2D web mapping is to come, the JavaScrip 
be recorded and the architectural changes from the 17th century next developments of distributed GIS will come in the form of j agt 
to the present day can be determined more efficiently. Natural, 3D web mapping. j ust p )e g (J 
economical, social and political events, which have caused system 1 
structural changes to the fortresses and surrounding buildings Advancement in technology and navigable 3D graphics has databases 
and environs, can be found out. (Giiney&Celik, 2003) enabled cartographers to produce maps that are both interactive 
and animated maps, similar to most things experienced in VRML v 
reality. More recent developments in hardware and software offers a 
capability and price have made three-dimensional output flexibility 
extremely affordable. People live in a 3D reality and the users are