In this study, an appearance reconstruction method based on extraction of
material re& / #64258 / ectance properties of a three-dimensional (3D) object from its twodimensional
(2D) images is explained. One of the main advantages of this system
is that the reconstructed object can be rendered in real-time with photorealistic
quality in varying illumination conditions. Bidirectional Re& / #64258 / ectance Distribution
Functions (BRDFs) are used in representing the re& / #64258 / ectance of the object. The
re& / #64258 / ectance of the object is decomposed into di& / #64256 / use and specular components and
each component is estimated seperately. While estimating the di& / #64256 / use components,
illumination-invariant images of the object are computed from the input
images, and a global texture of the object is extracted from these images by using
surface particles. The specular re& / #64258 / ectance data are collected from the residual
images obtained by taking di& / #64256 / erence between the input images and corresponding
illumination-invariant images, and a Lafortune BRDF model is & / #64257 / tted to these
data. At the rendering phase, the di& / #64256 / use and specular components are blended
into each other to achieve a photorealistic appearance of the reconstructed object.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/1128784/index.pdf |
| Date | 01 January 2003 |
| Creators | Erdem, Mehmet Erkut |
| Contributors | Atalay, Volkan |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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