Results 11 to 20 of about 681,623 (204)
Constrained higher order Delaunay triangulations [PDF]
Computational Geometry, 2005 Several results concerning higher-order Delaunay triangulations are generalized to constrained higher-order Delaunay triangulations. Those results are responding to the following two problems: determine the order of a triangulation, complete to a lowest order Delaunay triangulation.
Joachim Gudmundsson +2 more
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Towards a definition of higher order constrained Delaunay triangulations [PDF]
Computational Geometry, 2009 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Rodrigo I. Silveira, Marc J. van Kreveld
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Delaunay triangulation based image enhancement for echocardiography images [PDF]
, 2009 A novel image enhancement approach for automatic echocardiography image processing is proposed. The main steps include undecimated wavelet based speckle noise reduction, edge detection, followed by a regional enhancement process that employs Delaunay ...
Ahanathapillai, V. +2 more
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Research on 3D modeling method of complex rock strata surfaces based on unit divisio
Gong-kuang zidonghua, 2017 In view of the problem that existing 3D modeling method of rock strata surfaces does not systematically consider the construction of 3D modeling of complex rock strata surfaces with geological conditions such as fault and collapse column, horizontal ...
LIU Yong, CUI Hongqing
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Design of adaptive unstructured grids using differential methods
Вестник КазНУ. Серия математика, механика, информатика, 2018 Adaptive generation of computational grids can improve the efficiency of mathematical modeling by increasing the accuracy of numerical approximations. The paper describes a method for constructing unstructured grids with adaptation based on differential ...
Olzhas Nurkonysuly Turar +1 more
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ISPRS International Journal of Geo-Information, 2018 Extracting the split line of narrow and long patches is important for the generalization of land-use thematic data. There are two commonly used methods for extracting the split lines: One is based on Delaunay triangulation and the other is based on ...
Chengming Li +4 more
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A precise TIN clipping algorithm for the digital mining design of the opencast coal mine
PLoS ONE, 2023 The triangulated irregular network (TIN) clipping algorithm is one of the vital algorithms for the digital mining design of opencast coal mines based on the geological digital elevation model (DEM) described by TIN.
Jingchang Zhao +3 more
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Texture-Cognition-Based 3D Building Model Generalization
ISPRS International Journal of Geo-Information, 2017 Three-dimensional (3D) building models have been widely used in the fields of urban planning, navigation and virtual geographic environments. These models incorporate many details to address the complexities of urban environments.
Po Liu, Chengming Li, Fei Li
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IEEE Access, 2019 Geometric algorithms rely on predicates, among them, the 2D and 3D orientation and incircle tests are important ones. Shewchuk's adaptive floating-point predicate is a well-known C implementation, which is embedded in many computational geometry ...
Meng Qi, Ke Yan, Yuanjie Zheng
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A Contour Line Group Simplification Method Based on Classified Terrain Features
ISPRS International Journal of Geo-Information, 2023 Contour line group simplification methods can effectively preserve terrain features during map making and producing. This process involves two main steps, namely terrain feature line extraction and contour bend selection.
Yuanfu Li +4 more
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