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Grow & fold: compressing the connectivity of tetrahedral meshes
2000
Computer-Aided Design
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sequences of 'folding' operations, so that they produce the connectivity graph of the original mesh. ...
Our 'Grow & Fold' format reduces the connectivity storage down to 7 bits per tetrahedron: three of these are used to encode the presence of children in a tetrahedron spanning tree; the other four constrain ...
Acknowledgements This work was supported by the Swiss NF grant 81EZ-54524 and US NSF grant 9721358. ...
doi:10.1016/s0010-4485(00)00040-3
fatcat:jwpjm4ydqjh4hcxthgorx3urqe
The role of glottal surface adhesion on vocal folds biomechanics
2014
Biomechanics and Modeling in Mechanobiology
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The airway surface liquid (ASL) is a very thin mucus layer and covers the vocal fold (VF) surface. Adhesion mediated by the ASL occurs during phonation as the VFs separate after collision. ...
It is found that for the ASL considered here, the characteristics of the VF separation process are of debond type. ...
In the compression phase (figure 5a), which starts when at least one location on AB comes into contact, a single CILS grows until it reaches a maximum length. ...
doi:10.1007/s10237-014-0603-7
pmid:25034504
pmcid:PMC4297746
fatcat:q4vg4hxezfblbax5lqx2w56qzu
Elastic instability during branchial ectoderm development causes folding of the Chlamydosaurus erectile frill
2019
eLife
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We suggest that this robust folding pattern is not due to localised increased growth at the positions of the ridges, but emerges from an elastic instability during homogeneous growth of the frill skin ...
Our comparative developmental analyses of multiple species suggest that the ancestor of Episquamata reptiles developed a neck fold from the hyoid branchial arch by preventing it to fully fuse with posterior ...
The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication. ...
doi:10.7554/elife.44455
fatcat:idlxa4n4c5hi3l7eoxtcoaqv3u
Compressing hexahedral volume meshes
2003
Graphical Models
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On our test meshes the average connectivity compression ratio is 1 : 162.7. ...
For connectivity compression, we extend the idea of coding with degrees as pioneered by Touma and Gotsman [30] to volume meshes. Hexahedral connectivity is coded as a sequence of edge degrees. ...
This work was done while both authors were at INRIA, Sophia-Antipolis and was supported in part by the ARC TeleGeo grant from INRIA. ...
doi:10.1016/s1524-0703(03)00044-4
fatcat:ogeq7kdk6jbbzdvoqwytdtztrq
Phylogenomics and its Growing Impact on Algal Phylogeny and Evolution
2006
ALGAE
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Phylogenomics is the convergence of genomics science (the study of the function and structure of genes and genomes) and molecular phylogenetics (the study of the hierarchical evolutionary relationships ...
The new higher level classification of eukaryotes with emphasis on the taxonomy of protists. ...
ACKNOWLEDGEMENTS The authors are grateful to Ministry of Environment and Forest, Govt. of India for financial support through an All India Coordinated Project on Taxonomy (AICOP- The aim of the present ...
doi:10.4490/algae.2006.21.1.001
fatcat:cgwj6zss7za3ximr4bp7tai2l4
Applications of Forman's discrete Morse theory to topology visualization and mesh compression
2004
IEEE Transactions on Visualization and Computer Graphics
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This construction is then used to topologically analyze mesh compression schemes, such as Edgebreaker and Grow&Fold. ...
In particular, this paper proves that the complexity class of the strategy optimization of Grow&Fold is MAX-SNP hard. ...
In the next section, we will extend this result to topologically analyze the Grow&Fold tetrahedral mesh compression algorithm.
(b) Grow and Fold The Grow&Fold algorithm of A. Szymczak and J. ...
doi:10.1109/tvcg.2004.18
pmid:15794132
fatcat:xlhpq5jekjhilgsrqkz3zfrcla
Active zones in CSG for accelerating boundary evaluation, redundancy elimination, interference detection, and shading algorithms
1988
ACM Transactions on Graphics
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Although I have initiated these projects and invented or co-invented the underlying technologies, much of this work would not have been possible without the involvement of my collaborators (colleagues, ...
Constructive Solid Geometry (CSG) formulations and algorithms The objective of this research area was to improve the efficiency, reliability, and power of CSG (a core technology for solid modeling). ...
(Top conference in the area, 30% acceptance rate.) "Grow&Fold: Compressing the connectivity of tetrahedral meshes", A. Szymczak and J. Rossignac. ...
doi:10.1145/49155.51123
fatcat:psnn6mwnrbhjlndd2bu6vatavi
HexaShrink, an exact scalable framework for hexahedral meshes with attributes and discontinuities: multiresolution rendering and storage of geoscience models
2019
Computational Geosciences
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Starting with an overview of volume meshes compression techniques, our contribution blends coherently different multiresolution wavelet schemes in different dimensions. ...
They emphasize the consistency of the proposed representation, in terms of visualization, attribute downsampling and distribution at different resolutions. ...
Wheeler for their help, as well as the reviewers whose comments helped improve the compression performance assessment and comparison. ...
doi:10.1007/s10596-019-9816-2
fatcat:gltpzzoyvfe3bbez5snwtcjayq
SOT
2009
2009 SIAM/ACM Joint Conference on Geometric and Physical Modeling on - SPM '09
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We use a set of powerful wedge-based operators for querying and traversing the mesh. ...
The Compact Half Face (CHF) proposed by Lage et al. extends CT to tetrahedral meshes, storing 8 references per tetrahedron (4 in the V table and 4 in the O table). ...
Since there are 2+2k external faces, but 6+2k locations in the opposites propose the Grow&Fold compression algorithm for tetrahedral meshes. ...
doi:10.1145/1629255.1629266
dblp:conf/sma/GurungR09
fatcat:if2upiodozgr5g2xmbmn663i2q
GEncode: Geometry-driven compression for General Meshes
2006
Computer graphics forum (Print)
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Performances of actual mesh compression algorithms vary significantly depending on the type of model it encodes. ...
GEncode is a new single-rate, geometry-driven compression scheme where prior knowledge of the mesh is plugged into the coder in an explicit manner. ...
ratio (in bits per vertex) for tetrahedral meshes compared with Grow & Fold [32] and streaming compression [16] . ...
doi:10.1111/j.1467-8659.2006.00990.x
fatcat:amxwdceesrge5ct5qkdv7ermo4
An Integrated Pipeline of Decompression, Simplification and Rendering for Irregular Volume Data
[article]
2005
International Workshop on Volume Graphics, Proceedings of the
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Since simplification is a form of lossy compression, the on-the-fly volume simplification algorithm provides a powerful mechanism to dynamically create versions of a tetrahedral mesh at multiple resolution ...
The proposed tetrahedral mesh simplification algorithm and its integration with volume decompression and rendering has been successfully implemented in the Gatun system. ...
The output of the tetrahedral mesh compression algorithm also consists of two parts: a representation of the boundary surface and a representation of the geometry and connectivity of the tetrahedral mesh ...
doi:10.2312/vg/vg05/147-155
fatcat:wyytkwfkdfgmpf4da2l6gmed6q
An Architecture For Interactive Tetrahedral Volume Rendering
[chapter]
2001
Eurographics
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These primitives allow performance improvements in rendering tetrahedral meshes similar to the improvements triangle strips and fans allow in rendering triangle meshes. ...
We provide new techniques for generating tetrahedral strips that achieve, on the average, strip lengths of 17 on representative datasets. ...
, Jeffrey Berkley, University of Washington HIT Laboratory; and for the head and torso datasets, the Center for Scientific Computing and Imaging, University of Utah. ...
doi:10.1007/978-3-7091-6756-4_11
fatcat:y2vouw2kzrhdvgbrsan3xeopje
Woodification: User-Controlled Cambial Growth Modeling
2015
Computer graphics forum (Print)
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mesh with adaptive subdivision, collision detection and topological control. ...
Abstract We present a botanical simulation of secondary (cambial) tree growth coupled to a physical cracking simulation of its bark. ...
The DSC also overcomes the common roadblocks of Lagrangian surface mesh deformation caused by selfintersections (e.g., fold-overs) by maintaining interior and exterior tetrahedral meshes that conform to ...
doi:10.1111/cgf.12566
fatcat:r5ppepi4sfdanlvjroxyunhhlu
Robust interactive cutting based on an adaptive octree simulation mesh
2011
The Visual Computer
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Acknowledgement This work has been supported by the Swiss CTI project 10534.1 PFLS-LS. ...
Computing one time step takes only 5 ms
Cutting folded objects Our method allows for robust cutting even in challenging scenarios that include folded and heavily compressed objects. ...
Further, instead of using tetrahedral or hexahedral background meshes, there exist a couple of approaches that do not require any mesh structure to compute the dynamics. Pauly et al. ...
doi:10.1007/s00371-011-0561-3
fatcat:nf6qzmwajnhl5pvivvxdrdocyy
Global Perturbation of Initial Geometry in a Biomechanical Model of Cortical Morphogenesis
[article]
2019
arXiv
pre-print
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Our approach allows us to study and explore one of the most potential sources of reproducible cortical folding pattern: the specification of initial geometry of the brain. ...
Cortical folding pattern is a main characteristic of the geometry of the human brain which is formed by gyri (ridges) and sulci (grooves). ...
The simulation of cortical folding is based on a finite element model of the human brain with a 3D tetrahedral mesh extracted from a T2-weighted motion corrected MRI of a fetal brain at 22 GW. ...
arXiv:1902.05883v2
fatcat:lqrszi4airb2pijtkabrjh767e
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