Description |
The T-b3DR
consists on a research project
focusing the
retrieval of three-dimensional objects based on a shape thesaurus. This
novel approach to 3D shape retrieval supports partial queries using
part-in-whole matching. Moreover, the thesaurus-based indexing provides
a efficient solution for the time-complexity problems faced by existing
solutions when searching for partially similar models in large
collections.
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Prototypes |
During the research work we developed several
prototypes. Some are directly related with the collection
classification and
retrieval solution, but others are just auxiliar tools for our work.
Nevertheless, a few of these auxiliar tools proved to be useful and we
will include some of them in this section.
![SHaVisRep](images/SHaVisRep-small.png) |
SHaVisRep
[+]
This
prototype produces visual representations of spherical harmonics (SHA). It
receives as input the binary signature created by the the executable for computing SHA representations
provided by Kazhdan and produce a visual representation for this
descriptor. This visual representation can be a 3D column chart or a 2D
line chart in VRML or BMP format, respectively.
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![FaceCounter](images/FaceCounter-small.png) |
FaceCounter
[+]
To
help us creating statistics on collections of 3D models we developed a
small application that counts the faces of models stored in STL (or
OFF) files. It can be used to analyze a single model or a
collection of models. The first is done by specifying the corresponding
STL file and the second by specifying the folder that contains the
collection.
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![OFFtoVRML](images/OFFtoVRML-small.png) |
OFFtoVRML [+]
This tool was initially devised as a
simple format converter (from OFF to VRML). However, during our
research work lots of extra functionalities were added. Among these are
the ability to write the model in other formats, as STL or PLY, or the
capability to read from STL files as well. Other extra features include
the possibility to explicit in the VRML file the face and vertex
normals or to represent the point cloud instead of the mesh.
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Publications |
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A Thesaurus-based Approach to 3D Shape Retrieval
Ferreira, A. PhD thesis dissertation
proposal, Instituto Superior Técnico, Universidade Técnica de Lisboa,
July 2009
[ Thesis (PDF
3.1MB) ]
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Thesaurus-based 3D Object Retrieval with Part-in-Whole Matching
Ferreira, A., Marini S., Attene M., Fonseca, M.J., Spagnuolo, M., Jorge, J.A. and Falcidieno, B.
International Journal of Computer Vision, Vol. 89, Issue 2-3 (Sep. 2010), pp. 327-347, Kluwer Academic Publishers
[ Paper (SpringerLink) ]
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Retrieval
of 3D Objects using Partial Matching (Concise version)
Ferreira, A. revised PhD dissertation
proposal, Instituto Superior Técnico, Universidade Técnica de Lisboa,
January 2008
[ Proposal (PDF
3.1MB) ]
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Retrieval
of 3D Objects using
Partial Matching
Ferreira, A.
PhD dissertation proposal, Instituto Superior Técnico, Universidade
Técnica de Lisboa, November 2007
[ Proposal (PDF
7.6MB) ]
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Report
on Experiments with 3D Shape Descriptors
Zhang, L., Fonseca, M.J. and Ferreira, A.
Technical Report, DecorAR (FCT POSC/EIA/59938/2004) Lisboa, July 2007
[ Report (PDF
408KB) ]
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Survey
on 3D Shape Descriptors
Zhang, L., Fonseca, M.J. and Ferreira, A.
Technical Report, DecorAR (FCT POSC/EIA/59938/2004) Lisboa, February
2007
[ Report (PDF
273KB) ]
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Researchers |
- Alfredo Ferreira [+]
- Manuel João Fonseca [+]
- Joaquim Jorge [+]
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