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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Spline curve"”.
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Vectorization of Raster Images Using B-Spline Surfaces
… each segment is approximated with a periodic B-Spline curve. This curve is then used to create a B-Spline surface to approximate the interior of the segment. The algorithm fits each B-Spline to the colors of the image using least-squares approximation. The color and shape of each B-Spline …
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Solutions of Inequality Constrained Spline Optimization Problems with the Active Set Method
… solve the problem of finding a near-interpolant curve, subject to constraints, which minimizes the bending energy of the curve. Using B-splines as our tools, we give a brief overview of spline properties and develop several different cases of inequality constrained optimization problems of this …
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The development of an all quadrilateral boundary conforming grid generator for high order finite element methods
… geometry. In addition, a Non-Uniform Rational B-Spline curve fitter is implemented to replicate the curvature of the geometries. The grid elements on the boundaries conform to the curved structure to support high order accuracy for a finite element scheme. Various geometries are used to test the …
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Robotic navigation of smooth contours
… we propose a method that is based on fitting a spline curve that passes from the initial position and orientation of the robot to a goal position and orientation. The spline is continually recomputed as the robot moves through space. This yields a simple and inefficient method for robot …
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An object oriented curve and surface framework
… of highly portable software. From this need, a curve and surface framework is created. This framework allows the engineer to create, manipulate, and analyze geometric entities. The design allows new curve and surface implementations to be fully integrated into the framework without requiring …
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Iras oxygen- and carbon-rich miras close to the galactic plane
… were determined by integrating under a spline curve fitted to the J H K L12, 25μm fluxes of the Miras. Distances to the stars have been calculated using absolute magnitude P- L relations from oxygen-rich and carbon-rich Miras in the LMC, where the LMC distance modulus of 18.57 was …
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A Method of Topology Optimization for Curvature Continuous Designs
… algorithm, together with a classical cubic spline curve-fitting method, to produce curvature-continuous boundaries throughout the optimization process. The level-set function is parameterized by the locations and coefficients of Wendland C2 radial basis functions. Topology optimization is …
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Real-Time Multiresolution Management of Spatiotemporal Earth Observation Data Using DGGS
… achieved using reverse Chaikin subdivision and B-spline curve fitting, allowing the system to not only support smooth approximation and live updates, but also to significantly reduce storage requirements. Together, these components define a scalable framework for real-time multiresolution …
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Modeling and Simulation of Random Processes and Fields in Civil Engineering and Engineering Mechanics
… function is constructed "on the fly" using spline interpolation. This thesis considers a piecewise cubic spline which is constructed from seven localized discrete boundary points. The enrichment function is then determined by solving numerically a nonlinear equation which determines the …