Geometrical reconstruction of curves and surfaces using NURBS
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In this paper we use the theory of geometric curve and surface evolution to diffuse an object preserving their important features. We do that using a curvature flow method with a novel influence function. The proposed influence function takes profit from t ...
Splines, which were invented by Schoenberg more than fifty years ago, constitute an elegant framework for dealing with interpolation and discretization problems. They are widely used in computer-aided design and computer graphics, but have been neglected i ...
We survey formal methods as they are applied to the development of communication services. We report on industrial and academic projects, consider different communication architectures and work related to the feature interaction problem. Based on our surve ...
The increasing importance of sustainability in urban and architectural design is strongly questioning the actual logic of built environment dispersion. In this context, the regeneration of urban wastelands constitutes an important potential for urban densi ...
We consider using spline interpolation to improve the standard filtered back-projection (FBP) tomographic reconstruction algorithm. In particular, we propose to link the design of the filtering operator with the interpolation model that is applied to the s ...
We prove a priori anisotropic estimates for the L2 and H1 interpolation error on linear finite elements. The full information about the mapping from a reference element is employed to separate the contribution to the elemental error c ...
The extraction of planar sections from volume images is the most commonly used technique for inspecting and visualizing anatomic structures. We propose to generalize the concept of planar section to the extraction of curved cross-sections (free form surfac ...
Institute of Electrical and Electronics Engineers Computer Society2003
We present an exact algorithm for the computation of the moments of a region bounded by a curve represented in a scaling function or wavelet basis. Using Green's theorem, we show that the computation of the area moments is equivalent to applying a suitable ...
The implementation of bio-inspired systems in hardware has traditionally been more a matter of artistry than of method. The reasons are multiple, but one of the main problems has always been the lack of a universal platform, of a standardized architecture, ...
For the refurbishment projects, one of the most important problems is to evaluate the economical efficiency of the project. It is difficult to estimate, with good accuracy, the hydraulic efficiency in situ for existing configurations and even more difficul ...