Results 21 to 30 of about 917 (180)
Efficient rendering of trimmed nurbs surfaces
Computer-Aided Design, 1995 An algorithm for the interactive display of trimmed nurbs surfaces is presented. The algorithm converts the nurbs surfaces to Bézier surfaces, and nurbs trimming curves to Bézier curves. It tessellates each trimmed Bézier surface into triangles, and renders them using the triangle rendering capabilities common in current graphics systems.
Subodh Kumar 0001, Dinesh Manocha
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3D Reality-Based Survey and Retopology for Structural Analysis of Cultural Heritage
Sensors, 2022 Cultural heritage’s structural changes and damages can influence the mechanical behaviour of artefacts and buildings. The use of finite element methods (FEM) for mechanical analysis is largely used in modelling stress behaviour. The workflow involves the
Sara Gonizzi Barsanti +2 more
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Computational Visual Media, 2017 Existing shape models with spherical topology are typically designed either in the discrete domain using interpolating polygon meshes or in the continuous domain using smooth but non-interpolating schemes such as subdivision or NURBS. Both polygon models
D. Schmitter +2 more
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A GEOMETRIC PROCESSING WORKFLOW FOR TRANSFORMING REALITY-BASED 3D MODELS IN VOLUMETRIC MESHES SUITABLE FOR FEA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Conservation of Cultural Heritage is a key issue and structural changes and damages can influence the mechanical behaviour of artefacts and buildings. The use of Finite Elements Methods (FEM) for mechanical analysis is largely used in modelling stress ...
S. Gonizzi Barsanti, G. Guidi
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Developable Surface Patches Bounded by NURBS Curves [PDF]
Journal of Computational Mathematics, 2020 17 pages, 17 figures.
Leonardo Fernández-Jambrina +1 more
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Watermarking Algorithms for 3D NURBS Graphic Data
EURASIP Journal on Advances in Signal Processing, 2004 Two watermarking algorithms for 3D nonuniform rational B-spline (NURBS) graphic data are proposed: one is appropriate for the steganography, and the other for watermarking.
Jae Jun Lee, Nam Ik Cho, Sang Uk Lee
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Accuracy assessment of mine walls’ surface models derived from terrestrial laser scanning
International Journal of Coal Science & Technology, 2018 The monitoring of highwall slopes at open-pit mines is an important task to ensure safe mining. For this reason, several techniques such as total station, radar, terrestrial Light Detection and Ranging (LIDAR) can be employed for surface measurement. The
Nguyen Quoc Long +6 more
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Machines, 2023 As the applications for freeform optical surfaces continue to grow, the need for high-precision machining methods is becoming more and more of a necessity. Different toolpath strategies for the ultra-high precision turning of freeform surfaces can have a
Xuchu Wang +4 more
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USAGE OF NURBS-APPROXIMATION FOR CONSTRUCTION OF SPATIAL MODEL OF HUMAN FACE
Міжнародний науково-технічний журнал "Проблеми керування та інформатики", 2011 The technology of spatial human face model building based on specific photographic images is described. The algorithms of image processing parameters for spatial models are proposed. The face is modeled using NURBS-surfaces.
Yu.V. Krak, A.V. Barmak, E.M. Baraban
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Algorithms, 2022 In analysis of problems with parametric spline boundaries that are immersed or inserted into an underlying domain, the discretization on the underlying domain usually does not conform to the inserted boundaries.
Tao Song, Huanyu Liao, Ganesh Subbarayan
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