Título: | RECONSTRUCTION OF SCENES FROM IMAGES BY COARSE-TO-FINE SPACE CARVING | |||||||
Autor: |
ANSELMO ANTUNES MONTENEGRO |
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Colaborador(es): |
MARCELO GATTASS - Orientador PAULO CEZAR PINTO CARVALHO - Coorientador |
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Catalogação: | 03/MAR/2004 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | |||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=4556&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=4556&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.4556 | |||||||
Resumo: | ||||||||
The reconstruction of scenes from imagens has received
special attention from researchers of the areas of computer
vision, computer graphics and geometric modeling. As
examples of application we can mention image-based
scene reconstruction, modeling of complex as-built objects,
construction of virtual environments and telepresence.
Among the most successful methods used for the
reconstruction of scenes from images are those based on
Space Carving algorithms. These techniques reconstruct the
shape of the objects of interest in a scene by determining,
in a volumetric representation of the scene space, those
elements that satisfy a set of photometric constraints
imposed by the input images. Once determined, each photo-
consistent element is colorized according to the
photometric information in the input images, in such a way
that they reproduce the photometric information in the
input images, within some pre-specificied error tolerance.
In this work, we investigate the use of rendering
techniques in space carving methods. As a result, we
propose a method based on an adaptive refinement process
which works on reconstruction spaces represented by
spatial subdivisions. We claim that such method can
reconstruct the objects of interest in a more efficient
way, using resources proportional to the local
characteristics of the scene, which are discovered as the
reconstruction takes place. Finally, we evaluate the
quality and the efficiency of the method based on
the results obtained from a reconstruction device that
works with images captured from webcams.
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