Results 211 to 220 of about 44,204 (260)

Morphable Surface Models

International Journal of Computer Vision, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Rough surface modeling using surface growth

2003 Shape Modeling International., 2003
In this paper, we present a novel modeling method for synthesizing rough surfaces using discrete surface growth models. We employ a two-pass method. Initial point cluster data is generated using discrete simulation models derived from physical surface growth and evolution.
Yootai Kim, Raghu Machiraju, David S. Thompson   +2 more
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Haptic rendering of surface-to-surface sculpted model interaction

ACM SIGGRAPH 2005 Courses on - SIGGRAPH '05, 1999
Abstract Previous work in haptics surface tracing for virtual prototyping and surface design applications has used a point model for virtual finger-surface interaction. We extend this tracing method for surface-to-surface interactions. A straightforward extension of the point-surface formulation to surface-surface can yield extraneous ...
Donald D. Nelson, David E. Johnson 0001, Elaine Cohen   +2 more
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A model surface reaction on stepped surfaces

Surface Science, 1996
Abstract Lattice gas models are ideal for studying the properties of adsorbates on inhomogeneous surfaces. The primary technique for examining these models, Monte Carlo simulations, is often very computationally expensive. We introduce an approximate theory that is well suited to rapidly determining qualitative behaviours of lattice gases on ...
David S. Sholl, Rex T. Skodje
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Modeling Trees with Rugged Surfaces

2011IEEE 10th International Conference on Trust, Security and Privacy in Computing and Communications, 2011
In this study, a method for modeling trees with rugged surfaces by simulating tree growth is proposed. The phenomena of cell division is considered for simulating tree growth. There are two types of cells that affect the growth of trees, namely, the apical meristem cells and the cambium cells.
Atsushi Mizoguchi, Kazunori Miyata
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Cyclides in surface and solid modeling

IEEE Computer Graphics and Applications, 1993
It is shown that Dupin cyclides (C.P. Dupin, 1822), as surfaces in computer-aided geometric design (CAGD), have attractive properties such as low algebraic degree, rational parametric forms, and an easily comprehensible geometric representation using simple and intuitive geometric parameters.
Debasish Dutta, Ralph R. Martin, Michael J. Pratt   +2 more
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A model of Martian surface chemistry

Journal of Molecular Evolution, 1979
Alkaline earth and alkali metal superoxides and peroxides, gamma-Fe2O3 and carbon suboxide polymer are proposed to be constituents of the Martian surface material. These reactive substances explain the water modified reactions and thermal behaviors of the Martian samples demonstrated by all of the Viking Biology Experiments.
V I, Oyama, B J, Berdahl
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Kinetic model for surface reconstruction

Physical Review E, 2002
A microscopic kinetic model for the alpha beta [e.g., hex 1x1 for Pt(100) and 1x2 1x1 for Pt(110)] surface reconstruction is investigated by means of the mean field approximation and Monte Carlo simulations. It considers homogeneous phase nucleation that induces small surface phase defects.
V N, Kuzovkov, O, Kortlüke, W, von Niessen   +2 more
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Surfaces Associated with Sigma Models

Studies in Applied Mathematics, 2006
We present a unified method of construction of surfaces associated with Grassmannian sigma models, expressed in terms of an orthogonal projector. This description leads to compact formulae for structural equations of two‐dimensional surfaces immersed in thesu(N) algebra.
Grundland, A. M., Šnobl, L.
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A backscattering model for ocean surface

IEEE Transactions on Geoscience and Remote Sensing, 1992
A surface scattering model based on an approximate solution of the integral equations for the surface tangential fields has been developed for non-Gaussian distributed, finitely conducting surfaces. It consists of two parts. One part is proportional to the surface roughness spectrum, and the other to the surface bispectrum.
Kun-Shan Chen, Adrian K. Fung, David A. Weissman   +2 more
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