Appearance reconstruction of three dimensional models from real images.

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2002

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Yılmaz, Ulaş

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https://hdl.handle.net/11511/12347

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Graduate School of Natural and Applied Sciences, Thesis

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Appearance reconstruction of three dimensional models from real images Yilmaz, U; Mulayim, AY; Atalay, Mehmet Volkan (2002-10-30) An image based model reconstruction system is described. Real images of a rigid object acquired under a simple but controlled environment are used to recover the three dimensional geometry and the surface appearance. Based on a multi-image calibration method, an algorithm to extract the rotation axis of a turn-table has been developed. Furthermore, this can be extended to estimate robustly the initial bounding volume of the object to be modeled. The coarse volume obtained, is then carved using a stereo corr...
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Shape recognition with generalized beam angle statistics Tola, OO; Arica, N; Yarman Vural, Fatoş Tunay (2004-04-30) In this study, we develop a new shape descriptor and matching algorithm in order to find a given template shape in an edge detected image without performing boundary extraction. The shape descriptor based on Generalized Beam Angle Statistics (GBAS) defines the angles between the lines connecting each boundary point with the rest of the points, as random variable. Then, it assigns a feature vector to each point using the moments of beam angles. The proposed matching algorithm performs shape recognition by ma...
Shape Patterns in Digital Fabrication: A Survey on Negative Poisson’s Ratio Metamaterials Yılmaz, Bengisu; Adanova, Venera; Acar, Rüyam; Tarı, Zehra Sibel (Springer, 2018) Poisson’s ratio for solid materials is defined as the ratio of the lateral length shrinkage to the longitudinal part extension on a simple tension test. While Poisson’s ratio for almost every material in nature is a positive number, materials having negative Poisson’s ratio may be engineered. We survey computational works toward design and fabrication of negative Poisson’s ratio materials focusing on shape patterns from macro to micro scale. Specifically, we cover folding, knitting, and repeatedly ordering ...

Citation Formats

U. Yılmaz, “Appearance reconstruction of three dimensional models from real images.,” Middle East Technical University, 2002.