1,275 Hits in 4.7 sec

Merging polyhedral shapes with scattered features

M. Alexa
1999 Proceedings Shape Modeling International '99. International Conference on Shape Modeling and Applications  
The technique allows for the specification of scattered features to be aligned.  ...  The paper presents a technique for merging two genus 0 polyhedra. Merging establishes correspondences between vertices of the models as a first step in a 3D morphing process.  ...  We try to find a polyhedral shape that results from merging the two input shapes.  ... 
doi:10.1109/sma.1999.749341 dblp:conf/smi/Alexa99 fatcat:aph75wrfgbgo5kms6o5eacosne

Merging polyhedral shapes with scattered features

Marc Alexa
2000 The Visual Computer  
The technique allows for the specification of scattered features to be aligned.  ...  The paper presents a technique for merging two genus 0 polyhedra. Merging establishes correspondences between vertices of the models as a first step in a 3D morphing process.  ...  We try to find a polyhedral shape that results from merging the two input shapes.  ... 
doi:10.1007/pl00007211 fatcat:36qxohhvnzdste4h43djaoxuqu

Fast and intuitive metamorphosis of 3D polyhedral models using SMCC mesh merging scheme

Tong-Yee Lee, Po-Hua Huang
2003 IEEE Transactions on Visualization and Computer Graphics  
The higher level requires the animators to specify scatter features to decompose the input models into several corresponding patches.  ...  Index Terms-Polyhedral metamorphosis, embedding, relaxation, warping, merging, SMCC. ae 2 RELATED WORK Lazarus and Verroust [1] provide an excellent survey of the previous work on the 3D morphing problem  ...  First, the animators specify the scatter features to decompose the models into the corresponding patches, called morphing patches in this paper.  ... 
doi:10.1109/tvcg.2003.1175099 fatcat:cp5vxtlyijhfxjtw7g2mhyy63a

A new approach for a topographic feature-based characterization of digital elevation data

Eric Saux, R�my Thibaud, Ki-Joune Li, Min-Hwan Kim
2004 Proceedings of the 12th annual ACM international workshop on Geographic information systems - GIS '04  
This paper introduces a three-step feature-based approach for topographic properties extraction on scattered elevation data modeled by a TIN.  ...  Consistent results with the morphology of terrain are displayed.  ...  This protocol starts from a basic unit and merges gradually the similar adjacent units (facets with the same Global Attribute Atg).  ... 
doi:10.1145/1032222.1032235 dblp:conf/gis/SauxTLK04 fatcat:edffgajnmnhilixufaky55dfv4

Diffraction data of core-shell nanoparticles from an X-ray free electron laser

Xuanxuan Li, Chun-Ya Chiu, Hsiang-Ju Wang, Stephan Kassemeyer, Sabine Botha, Robert L. Shoeman, Robert M. Lawrence, Christopher Kupitz, Richard Kirian, Daniel James, Dingjie Wang, Garrett Nelson (+21 others)
2017 Scientific Data  
Figure 6 . 6 Features in scattering patterns of core-shell nanoparticles. (a) scattering pattern with no visible feature of Au core. (b) scattering pattern with visible feature of Au core.  ...  This is particularly challenging for the weakly scattering biological particles. We therefore set out to image core-shell heterostructures with both polyhedral cores and shells.  ...  Metadata associated with this Data Descriptor is available at and is released under the CC0 waiver to maximize reuse.  ... 
doi:10.1038/sdata.2017.48 pmid:28398334 pmcid:PMC5387922 fatcat:upnzmdquhjcsxent4gy56jeuzy

New approach for the modeling and smoothing of scattered 3D data

Stefan Karbacher, Gerd Haeusler, Richard N. Ellson, Joseph H. Nurre
1998 Three-Dimensional Image Capture and Applications  
The simplest and most accurate way is to generate a polyhedral surface.  ...  We introduce a new approach for modeling and smoothing scattered data based on an approximation of a mesh of circular arcs.  ...  SMOOTHING POLYHEDRAL SURFACES We now demonstrate how this new approach can be used for smoothing of measuring errors with minimum interference of real object features like edges.  ... 
doi:10.1117/12.302451 dblp:conf/3dica/KarbacherH98 fatcat:lztzrkg7vvfcnjtejsduojg2cm

Algorithmic Perception of Vertices in Sketched Drawings of Polyhedral Shapes

Pedro Company, Raquel Plumed, Peter A. C. Varley, Jorge D. Camba
2019 ACM Transactions on Applied Perception  
The detection is performed in 2D, before any 3D model is available and minimal information about the shape depicted by the sketch is used.  ...  In this paper, visual perception principles were used to build an artificial perception model aimed at developing an algorithm for detecting junctions in line drawings of polyhedral objects that are vectorized  ...  Careful and casual sketches of simple 2D shapes, with their merits Fig. 18 . 18 Careful and casual sketches of 3D polyhedral shapes, with their merits Fig. 19.  ... 
doi:10.1145/3345507 fatcat:6up3o62psbed7hnlja6yzok4fq

Poly-Spline Finite-Element Method

Teseo Schneider, Jérémie Dumas, Xifeng Gao, Mario Botsch, Daniele Panozzo, Denis Zorin
2019 ACM Transactions on Graphics  
We construct a hybrid hexahedral-dominant mesh, which contains a small number of star-shaped polyhedra, and build a set of high-order basis on its elements, combining triquadratic B-splines, triquadratic  ...  meshes in 3D, and 29 star-shaped polyhedral meshes in 3D.  ...  This condition is often, but not always, satisfied by existing hybrid meshers: we thus introduce a simple merging and splitting procedure to convert hybrid meshes into star-shaped polyhedral meshes (Section  ... 
doi:10.1145/3313797 fatcat:aelhxq5idndjrjwbqdrgylsvke

Fivefold symmetry as an inhibitor to hard-sphere crystallization

Nikos Ch. Karayiannis, Rohit Malshe, Juan J. de Pablo, Manuel Laso
2011 Physical Review E  
The latter effect can be understood in terms of a random polyhedral model.  ...  It is shown that short-range order in the form of sites with fivefold symmetry acts as a powerful inhibitor to crystal growth.  ...  Scattered points correspond to simulation data.  ... 
doi:10.1103/physreve.83.061505 pmid:21797370 fatcat:azihchdsxbeadbktnsz5x435fq

Metamorphosis of 3D Polyhedral Models Using Progressive Connectivity Transformations

Chao-Hung Lin, Tong-Yee Lee
2005 IEEE Transactions on Visualization and Computer Graphics  
In addition, a priority control function provides the animators with control of arising or dissolving of input models' features in a morphing sequence.  ...  In this paper, we propose a novel 3D morphing technique that avoids creating a merged embedding that contains the faces, edges, and vertices of two given embeddings.  ...  In our practice, the above simple approach works well for scattered features. If very dense features are required, the fold-over-free warping becomes a difficult problem.  ... 
doi:10.1109/tvcg.2005.12 pmid:15631124 fatcat:vfdjipwfdnc2pphi5ibv5yfnqe

Superlattices assembled through shape-induced directional binding

Fang Lu, Kevin G. Yager, Yugang Zhang, Huolin Xin, Oleg Gang
2015 Nature Communications  
We show that these polyhedral blocks-cubes and octahedrons-when mixed with spheres, promote the assembly of clusters with architecture determined by polyhedron symmetry.  ...  Here we investigate the assembly of clusters and lattices in which anisotropic polyhedral blocks coordinate isotropic spherical nanoparticles via shape-induced directional interactions facilitated by DNA  ...  In this regard, we functionalize both shaped particles (spherical and polyhedral) with DNA strands, allowing us to 'encode' particle interactions via DNA sequence.  ... 
doi:10.1038/ncomms7912 pmid:25903309 pmcid:PMC4423233 fatcat:wo4j6f3qzzaj5e2qqxgf2g4qsa

TopoLAP: Topology Recovery for Building Reconstruction by Deducing the Relationships between Linear and Planar Primitives

Liu, Zhang, Ling, Wan, Liu, Li
2019 Remote Sensing  
Finally, the manifold and watertight polyhedral building models are reconstructed based on the optimized PolyFit framework.  ...  Secondly, the structural contours of each plane segment are reconstructed by subset selection from intersections of these feature lines.  ...  Scattering lines.  ... 
doi:10.3390/rs11111372 fatcat:usoyldiiqrhsreaki2bcznptqq

Clustering-based identification of MIMO piecewise affine systems

Nikola Hure, Mario Vasak
2017 2017 21st International Conference on Process Control (PC)  
the polyhedral partitions and parameters of each MISO model.  ...  Multiple-Output (MIMO) system identification, previously used clusteringbased approach implied independent estimation of PWA maps for each of the outputs, whereas the MIMO PWA model was constructed by merging  ...  X has a shape of a hyperbox with each variable contained within the interval (0, 1).  ... 
doi:10.1109/pc.2017.7976248 fatcat:vbtw6rlc7vhvvadxscibitod2u

Silent Thecoma of Ovary - A Rare Case

Sakshi Sharad Duragkar, Surekha Atul Tayade, Kiran Pralhadrao Dhurve, Smriti Khandelwal
2020 Journal of Evolution of Medical and Dental Sciences  
P R E SE N T A T I O N O F C A S E A 53 years old, second para with 2 living children and post-menopausal since 7 years presented to OPD of a rural tertiary care centre with the chief complaint of acidity  ...  Usually the patient presents with complaint of post-menopausal bleeding because of the oestrogen which is secreted by theca cell tumours.  ...  The microscopic features of fibromas and thecomas may merge imperceptibly so that terms such as fibrothecoma or thecofibroma are quite common.  ... 
doi:10.14260/jemds/2020/541 fatcat:2uolzqyr5bfc3mlnzaj4f3hmfy

Models and algorithms for efficient multiresolution topology estimation of measured 3-D range data

In Kyu Park, Kyoung Mu Lee, Sang Uk Lee
2003 IEEE Transactions on Systems Man and Cybernetics Part B (Cybernetics)  
Usually, this problem becomes more difficult when we deal with scattered range data, rather than intensity or range image.  ...  This is a very desirable feature for the construction of a mesh structure. B.  ... 
doi:10.1109/tsmcb.2003.814301 pmid:18238220 fatcat:oqxgnxnbp5arlje3qbwbtmixsa
« Previous Showing results 1 — 15 out of 1,275 results