Welcome to the experimental content based
retrieval engine which operates in a real time 3D environment.
A 3D pottery museum has been implemented as a case study. The
visitor can freely navigate within the museum and perform queries-by-example
using any of the exhibited artefacts. Animated arrows will appear over morphologicaly similar items.
At the same time the user can monitor on the top map the
similarity ranking scores and the positions of the morphological similar artefacts.
At the moment the system uses our
VMBA 3D descriptor which is designed for vessels and generally
surfaces of revolution and thus the available artefacts are limited
to pottery. With the use of other 3D shape descriptors the system
can be expanded to other domains such as architectural
structures, facade features, etc.
It should be mentioned that the 3D scene is manually
segmented into separated 3D model entities (hierarchical structure)
which properties such as their digital shape signatures (descriptors),
their coordinates within the 3D space and other information are
encoded into metadata within a native XML database (eXist db).
In brief, when the user initiates a query-by-example, the client
forwards the object's ID to the server. The server compares the
digital signatures of the query-object against all other scene
objects using a similarity metric and returns a sorted similarity
ranking scores list (ID's of the similar objects).The system is
based on PHP and Quest3D technologies. The 3D model of the museum
has been build in Blender.
The authors would like to acknowledge and thank
the Cultural Heritage Unit of the Cultural and Educational Technology
Institute/Research Centre ‘Athena’ for their support in this work,
Dr. Horn-yeu Shiaw, Prof. Robert Jacob and Prof. Gregory R. Crane
from Tufts University, the Centre of Advanced Spatial Technologies
of the Hampson Museum, Carlos Hernandez Esteban and Francis Schmitt
from Telecom Paris for providing us with copies of their digitised
3D vessel collections.
To enter the 3D pottery museum using
an IE browser click on the following link Take
me to the virtual museum (notice that a pop up window will rise).
material related to this project can be found at the following
work is part of the 03ED679 research project, implemented within
the framework of the Reinforcement Programme of Human Research
Manpower (PENED) and co financed by National and Community
Funds (25% from the Greek Ministry of Development - General Secretariat
of Research and Technology and 75% from E.U.- European Social
at us akoutsou at ipet.gr or cmakar at ipet.gr