---
_id: '1876'
abstract:
- lang: eng
  text: We study densities of functionals over uniformly bounded triangulations of
    a Delaunay set of vertices, and prove that the minimum is attained for the Delaunay
    triangulation if this is the case for finite sets.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Nikolai
  full_name: Dolbilin, Nikolai
  last_name: Dolbilin
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Alexey
  full_name: Glazyrin, Alexey
  last_name: Glazyrin
- first_name: Oleg
  full_name: Musin, Oleg
  last_name: Musin
citation:
  ama: Dolbilin N, Edelsbrunner H, Glazyrin A, Musin O. Functionals on triangulations
    of delaunay sets. <i>Moscow Mathematical Journal</i>. 2014;14(3):491-504. doi:<a
    href="https://doi.org/10.17323/1609-4514-2014-14-3-491-504">10.17323/1609-4514-2014-14-3-491-504</a>
  apa: Dolbilin, N., Edelsbrunner, H., Glazyrin, A., &#38; Musin, O. (2014). Functionals
    on triangulations of delaunay sets. <i>Moscow Mathematical Journal</i>. Independent
    University of Moscow. <a href="https://doi.org/10.17323/1609-4514-2014-14-3-491-504">https://doi.org/10.17323/1609-4514-2014-14-3-491-504</a>
  chicago: Dolbilin, Nikolai, Herbert Edelsbrunner, Alexey Glazyrin, and Oleg Musin.
    “Functionals on Triangulations of Delaunay Sets.” <i>Moscow Mathematical Journal</i>.
    Independent University of Moscow, 2014. <a href="https://doi.org/10.17323/1609-4514-2014-14-3-491-504">https://doi.org/10.17323/1609-4514-2014-14-3-491-504</a>.
  ieee: N. Dolbilin, H. Edelsbrunner, A. Glazyrin, and O. Musin, “Functionals on triangulations
    of delaunay sets,” <i>Moscow Mathematical Journal</i>, vol. 14, no. 3. Independent
    University of Moscow, pp. 491–504, 2014.
  ista: Dolbilin N, Edelsbrunner H, Glazyrin A, Musin O. 2014. Functionals on triangulations
    of delaunay sets. Moscow Mathematical Journal. 14(3), 491–504.
  mla: Dolbilin, Nikolai, et al. “Functionals on Triangulations of Delaunay Sets.”
    <i>Moscow Mathematical Journal</i>, vol. 14, no. 3, Independent University of
    Moscow, 2014, pp. 491–504, doi:<a href="https://doi.org/10.17323/1609-4514-2014-14-3-491-504">10.17323/1609-4514-2014-14-3-491-504</a>.
  short: N. Dolbilin, H. Edelsbrunner, A. Glazyrin, O. Musin, Moscow Mathematical
    Journal 14 (2014) 491–504.
date_created: 2018-12-11T11:54:29Z
date_published: 2014-07-01T00:00:00Z
date_updated: 2025-07-10T11:51:26Z
day: '01'
department:
- _id: HeEd
doi: 10.17323/1609-4514-2014-14-3-491-504
external_id:
  arxiv:
  - '1211.7053'
fulldoi: https://doi.org/10.17323/1609-4514-2014-14-3-491-504
intvolume: '        14'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1211.7053
month: '07'
oa: 1
oa_version: Submitted Version
page: 491 - 504
publication: Moscow Mathematical Journal
publication_identifier:
  issn:
  - 1609-3321
publication_status: published
publisher: Independent University of Moscow
publist_id: '5220'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Functionals on triangulations of delaunay sets
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 14
year: '2014'
...
---
_id: '1929'
abstract:
- lang: eng
  text: We propose an algorithm for the generalization of cartographic objects that
    can be used to represent maps on different scales.
acknowledgement: We would like to offer our special thanks to students of the Department
  of Mathematics of Demidov Yaroslavl State University A. A. Gorokhov and V. N. Knyazev
  for participation in developing the program and assistance in preparation of test
  data. This work was supported by grant 11.G34.31.0053 from the government of the
  Russian Federation.
article_processing_charge: No
article_type: original
author:
- first_name: V V
  full_name: Alexeev, V V
  last_name: Alexeev
- first_name: V G
  full_name: Bogaevskaya, V G
  last_name: Bogaevskaya
- first_name: M M
  full_name: Preobrazhenskaya, M M
  last_name: Preobrazhenskaya
- first_name: A Y
  full_name: Ukhalov, A Y
  last_name: Ukhalov
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Olga
  full_name: Yakimova, Olga
  last_name: Yakimova
citation:
  ama: Alexeev VV, Bogaevskaya VG, Preobrazhenskaya MM, Ukhalov AY, Edelsbrunner H,
    Yakimova O. An algorithm for cartographic generalization that preserves global
    topology. <i>Journal of Mathematical Sciences</i>. 2014;203(6):754-760. doi:<a
    href="https://doi.org/10.1007/s10958-014-2165-8">10.1007/s10958-014-2165-8</a>
  apa: Alexeev, V. V., Bogaevskaya, V. G., Preobrazhenskaya, M. M., Ukhalov, A. Y.,
    Edelsbrunner, H., &#38; Yakimova, O. (2014). An algorithm for cartographic generalization
    that preserves global topology. <i>Journal of Mathematical Sciences</i>. Springer.
    <a href="https://doi.org/10.1007/s10958-014-2165-8">https://doi.org/10.1007/s10958-014-2165-8</a>
  chicago: Alexeev, V V, V G Bogaevskaya, M M Preobrazhenskaya, A Y Ukhalov, Herbert
    Edelsbrunner, and Olga Yakimova. “An Algorithm for Cartographic Generalization
    That Preserves Global Topology.” <i>Journal of Mathematical Sciences</i>. Springer,
    2014. <a href="https://doi.org/10.1007/s10958-014-2165-8">https://doi.org/10.1007/s10958-014-2165-8</a>.
  ieee: V. V. Alexeev, V. G. Bogaevskaya, M. M. Preobrazhenskaya, A. Y. Ukhalov, H.
    Edelsbrunner, and O. Yakimova, “An algorithm for cartographic generalization that
    preserves global topology,” <i>Journal of Mathematical Sciences</i>, vol. 203,
    no. 6. Springer, pp. 754–760, 2014.
  ista: Alexeev VV, Bogaevskaya VG, Preobrazhenskaya MM, Ukhalov AY, Edelsbrunner
    H, Yakimova O. 2014. An algorithm for cartographic generalization that preserves
    global topology. Journal of Mathematical Sciences. 203(6), 754–760.
  mla: Alexeev, V. V., et al. “An Algorithm for Cartographic Generalization That Preserves
    Global Topology.” <i>Journal of Mathematical Sciences</i>, vol. 203, no. 6, Springer,
    2014, pp. 754–60, doi:<a href="https://doi.org/10.1007/s10958-014-2165-8">10.1007/s10958-014-2165-8</a>.
  short: V.V. Alexeev, V.G. Bogaevskaya, M.M. Preobrazhenskaya, A.Y. Ukhalov, H. Edelsbrunner,
    O. Yakimova, Journal of Mathematical Sciences 203 (2014) 754–760.
date_created: 2018-12-11T11:54:46Z
date_published: 2014-11-16T00:00:00Z
date_updated: 2022-05-24T10:39:06Z
day: '16'
department:
- _id: HeEd
doi: 10.1007/s10958-014-2165-8
fulldoi: https://doi.org/10.1007/s10958-014-2165-8
intvolume: '       203'
issue: '6'
language:
- iso: eng
month: '11'
oa_version: None
page: 754 - 760
publication: Journal of Mathematical Sciences
publication_identifier:
  eissn:
  - 1573-8795
  issn:
  - 1072-3374
publication_status: published
publisher: Springer
publist_id: '5165'
quality_controlled: '1'
scopus_import: '1'
status: public
title: An algorithm for cartographic generalization that preserves global topology
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 203
year: '2014'
...
---
_id: '1930'
abstract:
- lang: eng
  text: (Figure Presented) Data acquisition, numerical inaccuracies, and sampling
    often introduce noise in measurements and simulations. Removing this noise is
    often necessary for efficient analysis and visualization of this data, yet many
    denoising techniques change the minima and maxima of a scalar field. For example,
    the extrema can appear or disappear, spatially move, and change their value. This
    can lead to wrong interpretations of the data, e.g., when the maximum temperature
    over an area is falsely reported being a few degrees cooler because the denoising
    method is unaware of these features. Recently, a topological denoising technique
    based on a global energy optimization was proposed, which allows the topology-controlled
    denoising of 2D scalar fields. While this method preserves the minima and maxima,
    it is constrained by the size of the data. We extend this work to large 2D data
    and medium-sized 3D data by introducing a novel domain decomposition approach.
    It allows processing small patches of the domain independently while still avoiding
    the introduction of new critical points. Furthermore, we propose an iterative
    refinement of the solution, which decreases the optimization energy compared to
    the previous approach and therefore gives smoother results that are closer to
    the input. We illustrate our technique on synthetic and real-world 2D and 3D data
    sets that highlight potential applications.
acknowledgement: RTRA Digiteoproject; ERC grant; SNF award; Intel Doctoral Fellowship;
  MPC-VCC
article_processing_charge: No
author:
- first_name: David
  full_name: Günther, David
  last_name: Günther
- first_name: Alec
  full_name: Jacobson, Alec
  last_name: Jacobson
- first_name: Jan
  full_name: Reininghaus, Jan
  id: 4505473A-F248-11E8-B48F-1D18A9856A87
  last_name: Reininghaus
- first_name: Hans
  full_name: Seidel, Hans
  last_name: Seidel
- first_name: Olga
  full_name: Sorkine Hornung, Olga
  last_name: Sorkine Hornung
- first_name: Tino
  full_name: Weinkauf, Tino
  last_name: Weinkauf
citation:
  ama: Günther D, Jacobson A, Reininghaus J, Seidel H, Sorkine Hornung O, Weinkauf
    T. Fast and memory-efficient topological denoising of 2D and 3D scalar fields.
    <i>IEEE Transactions on Visualization and Computer Graphics</i>. 2014;20(12):2585-2594.
    doi:<a href="https://doi.org/10.1109/TVCG.2014.2346432">10.1109/TVCG.2014.2346432</a>
  apa: Günther, D., Jacobson, A., Reininghaus, J., Seidel, H., Sorkine Hornung, O.,
    &#38; Weinkauf, T. (2014). Fast and memory-efficient topological denoising of
    2D and 3D scalar fields. <i>IEEE Transactions on Visualization and Computer Graphics</i>.
    IEEE. <a href="https://doi.org/10.1109/TVCG.2014.2346432">https://doi.org/10.1109/TVCG.2014.2346432</a>
  chicago: Günther, David, Alec Jacobson, Jan Reininghaus, Hans Seidel, Olga Sorkine
    Hornung, and Tino Weinkauf. “Fast and Memory-Efficient Topological Denoising of
    2D and 3D Scalar Fields.” <i>IEEE Transactions on Visualization and Computer Graphics</i>.
    IEEE, 2014. <a href="https://doi.org/10.1109/TVCG.2014.2346432">https://doi.org/10.1109/TVCG.2014.2346432</a>.
  ieee: D. Günther, A. Jacobson, J. Reininghaus, H. Seidel, O. Sorkine Hornung, and
    T. Weinkauf, “Fast and memory-efficient topological denoising of 2D and 3D scalar
    fields,” <i>IEEE Transactions on Visualization and Computer Graphics</i>, vol.
    20, no. 12. IEEE, pp. 2585–2594, 2014.
  ista: Günther D, Jacobson A, Reininghaus J, Seidel H, Sorkine Hornung O, Weinkauf
    T. 2014. Fast and memory-efficient topological denoising of 2D and 3D scalar fields.
    IEEE Transactions on Visualization and Computer Graphics. 20(12), 2585–2594.
  mla: Günther, David, et al. “Fast and Memory-Efficient Topological Denoising of
    2D and 3D Scalar Fields.” <i>IEEE Transactions on Visualization and Computer Graphics</i>,
    vol. 20, no. 12, IEEE, 2014, pp. 2585–94, doi:<a href="https://doi.org/10.1109/TVCG.2014.2346432">10.1109/TVCG.2014.2346432</a>.
  short: D. Günther, A. Jacobson, J. Reininghaus, H. Seidel, O. Sorkine Hornung, T.
    Weinkauf, IEEE Transactions on Visualization and Computer Graphics 20 (2014) 2585–2594.
date_created: 2018-12-11T11:54:46Z
date_published: 2014-12-31T00:00:00Z
date_updated: 2025-09-29T12:11:45Z
day: '31'
department:
- _id: HeEd
doi: 10.1109/TVCG.2014.2346432
external_id:
  isi:
  - '000344991700104'
fulldoi: https://doi.org/10.1109/TVCG.2014.2346432
intvolume: '        20'
isi: 1
issue: '12'
language:
- iso: eng
month: '12'
oa_version: None
page: 2585 - 2594
publication: IEEE Transactions on Visualization and Computer Graphics
publication_status: published
publisher: IEEE
publist_id: '5164'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Fast and memory-efficient topological denoising of 2D and 3D scalar fields
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 20
year: '2014'
...
---
OA_place: repository
OA_type: green
_id: '2012'
abstract:
- lang: eng
  text: The classical sphere packing problem asks for the best (infinite) arrangement
    of non-overlapping unit balls which cover as much space as possible. We define
    a generalized version of the problem, where we allow each ball a limited amount
    of overlap with other balls. We study two natural choices of overlap measures
    and obtain the optimal lattice packings in a parameterized family of lattices
    which contains the FCC, BCC, and integer lattice.
acknowledgement: We thank Herbert Edelsbrunner for his valuable discussions and ideas
  on the topic of this paper.  The second author has been supported by the Max Planck
  Center for Visual Computing and Communication
article_processing_charge: No
arxiv: 1
author:
- first_name: Mabel
  full_name: Iglesias Ham, Mabel
  id: 41B58C0C-F248-11E8-B48F-1D18A9856A87
  last_name: Iglesias Ham
- first_name: Michael
  full_name: Kerber, Michael
  last_name: Kerber
  orcid: 0000-0002-8030-9299
- first_name: Caroline
  full_name: Uhler, Caroline
  id: 49ADD78E-F248-11E8-B48F-1D18A9856A87
  last_name: Uhler
  orcid: 0000-0002-7008-0216
citation:
  ama: 'Iglesias Ham M, Kerber M, Uhler C. Sphere packing with limited overlap. In:
    <i>26th Canadian Conference on Computational Geometry</i>. Canadian Conference
    on Computational Geometry; 2014:155-161.'
  apa: 'Iglesias Ham, M., Kerber, M., &#38; Uhler, C. (2014). Sphere packing with
    limited overlap. In <i>26th Canadian Conference on Computational Geometry</i>
    (pp. 155–161). Halifax, Canada: Canadian Conference on Computational Geometry.'
  chicago: Iglesias Ham, Mabel, Michael Kerber, and Caroline Uhler. “Sphere Packing
    with Limited Overlap.” In <i>26th Canadian Conference on Computational Geometry</i>,
    155–61. Canadian Conference on Computational Geometry, 2014.
  ieee: M. Iglesias Ham, M. Kerber, and C. Uhler, “Sphere packing with limited overlap,”
    in <i>26th Canadian Conference on Computational Geometry</i>, Halifax, Canada,
    2014, pp. 155–161.
  ista: 'Iglesias Ham M, Kerber M, Uhler C. 2014. Sphere packing with limited overlap.
    26th Canadian Conference on Computational Geometry. CCCG: Canadian Conference
    on Computational Geometry, 155–161.'
  mla: Iglesias Ham, Mabel, et al. “Sphere Packing with Limited Overlap.” <i>26th
    Canadian Conference on Computational Geometry</i>, Canadian Conference on Computational
    Geometry, 2014, pp. 155–61.
  short: M. Iglesias Ham, M. Kerber, C. Uhler, in:, 26th Canadian Conference on Computational
    Geometry, Canadian Conference on Computational Geometry, 2014, pp. 155–161.
conference:
  end_date: 2014-08-13
  location: Halifax, Canada
  name: 'CCCG: Canadian Conference on Computational Geometry'
  start_date: 2014-08-11
corr_author: '1'
date_created: 2018-12-11T11:55:12Z
date_published: 2014-09-01T00:00:00Z
date_updated: 2025-01-20T13:57:24Z
day: '01'
department:
- _id: HeEd
- _id: CaUh
external_id:
  arxiv:
  - '1401.0468'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://cccg.ca/proceedings/2014/papers/paper23.pdf
month: '09'
oa: 1
oa_version: Preprint
page: 155-161
publication: 26th Canadian Conference on Computational Geometry
publication_status: published
publisher: Canadian Conference on Computational Geometry
publist_id: '5064'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Sphere packing with limited overlap
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2014'
...
---
_id: '2043'
abstract:
- lang: eng
  text: Persistent homology is a popular and powerful tool for capturing topological
    features of data. Advances in algorithms for computing persistent homology have
    reduced the computation time drastically – as long as the algorithm does not exhaust
    the available memory. Following up on a recently presented parallel method for
    persistence computation on shared memory systems [1], we demonstrate that a simple
    adaption of the standard reduction algorithm leads to a variant for distributed
    systems. Our algorithmic design ensures that the data is distributed over the
    nodes without redundancy; this permits the computation of much larger instances
    than on a single machine. Moreover, we observe that the parallelism at least compensates
    for the overhead caused by communication between nodes, and often even speeds
    up the computation compared to sequential and even parallel shared memory algorithms.
    In our experiments, we were able to compute the persistent homology of filtrations
    with more than a billion (109) elements within seconds on a cluster with 32 nodes
    using less than 6GB of memory per node.
article_processing_charge: No
arxiv: 1
author:
- first_name: Ulrich
  full_name: Bauer, Ulrich
  id: 2ADD483A-F248-11E8-B48F-1D18A9856A87
  last_name: Bauer
  orcid: 0000-0002-9683-0724
- first_name: Michael
  full_name: Kerber, Michael
  last_name: Kerber
  orcid: 0000-0002-8030-9299
- first_name: Jan
  full_name: Reininghaus, Jan
  id: 4505473A-F248-11E8-B48F-1D18A9856A87
  last_name: Reininghaus
citation:
  ama: 'Bauer U, Kerber M, Reininghaus J. Distributed computation of persistent homology.
    In:  McGeoch C, Meyer U, eds. <i>Proceedings of the Workshop on Algorithm Engineering
    and Experiments</i>. Society for Industrial and Applied Mathematics; 2014:31-38.
    doi:<a href="https://doi.org/10.1137/1.9781611973198.4">10.1137/1.9781611973198.4</a>'
  apa: 'Bauer, U., Kerber, M., &#38; Reininghaus, J. (2014). Distributed computation
    of persistent homology. In C.  McGeoch &#38; U. Meyer (Eds.), <i>Proceedings of
    the Workshop on Algorithm Engineering and Experiments</i> (pp. 31–38). Portland,
    USA: Society for Industrial and Applied Mathematics. <a href="https://doi.org/10.1137/1.9781611973198.4">https://doi.org/10.1137/1.9781611973198.4</a>'
  chicago: Bauer, Ulrich, Michael Kerber, and Jan Reininghaus. “Distributed Computation
    of Persistent Homology.” In <i>Proceedings of the Workshop on Algorithm Engineering
    and Experiments</i>, edited by Catherine  McGeoch and Ulrich Meyer, 31–38. Society
    for Industrial and Applied Mathematics, 2014. <a href="https://doi.org/10.1137/1.9781611973198.4">https://doi.org/10.1137/1.9781611973198.4</a>.
  ieee: U. Bauer, M. Kerber, and J. Reininghaus, “Distributed computation of persistent
    homology,” in <i>Proceedings of the Workshop on Algorithm Engineering and Experiments</i>,
    Portland, USA, 2014, pp. 31–38.
  ista: 'Bauer U, Kerber M, Reininghaus J. 2014. Distributed computation of persistent
    homology. Proceedings of the Workshop on Algorithm Engineering and Experiments.
    ALENEX: Algorithm Engineering and Experiments, 31–38.'
  mla: Bauer, Ulrich, et al. “Distributed Computation of Persistent Homology.” <i>Proceedings
    of the Workshop on Algorithm Engineering and Experiments</i>, edited by Catherine  McGeoch
    and Ulrich Meyer, Society for Industrial and Applied Mathematics, 2014, pp. 31–38,
    doi:<a href="https://doi.org/10.1137/1.9781611973198.4">10.1137/1.9781611973198.4</a>.
  short: U. Bauer, M. Kerber, J. Reininghaus, in:, C.  McGeoch, U. Meyer (Eds.), Proceedings
    of the Workshop on Algorithm Engineering and Experiments, Society for Industrial
    and Applied Mathematics, 2014, pp. 31–38.
conference:
  end_date: 2014-01-05
  location: Portland, USA
  name: 'ALENEX: Algorithm Engineering and Experiments'
  start_date: 2014-01-05
date_created: 2018-12-11T11:55:23Z
date_published: 2014-01-01T00:00:00Z
date_updated: 2025-06-11T08:03:07Z
day: '01'
department:
- _id: HeEd
doi: 10.1137/1.9781611973198.4
ec_funded: 1
editor:
- first_name: Catherine
  full_name: ' McGeoch, Catherine'
  last_name: ' McGeoch'
- first_name: Ulrich
  full_name: Meyer, Ulrich
  last_name: Meyer
external_id:
  arxiv:
  - '1310.0710'
fulldoi: https://doi.org/10.1137/1.9781611973198.4
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1310.0710
month: '01'
oa: 1
oa_version: Submitted Version
page: 31 - 38
project:
- _id: 255D761E-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '318493'
  name: Topological Complex Systems
publication: Proceedings of the Workshop on Algorithm Engineering and Experiments
publication_status: published
publisher: Society for Industrial and Applied Mathematics
publist_id: '5008'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Distributed computation of persistent homology
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2014'
...
---
_id: '2044'
abstract:
- lang: eng
  text: We present a parallel algorithm for computing the persistent homology of a
    filtered chain complex. Our approach differs from the commonly used reduction
    algorithm by first computing persistence pairs within local chunks, then simplifying
    the unpaired columns, and finally applying standard reduction on the simplified
    matrix. The approach generalizes a technique by Günther et al., which uses discrete
    Morse Theory to compute persistence; we derive the same worst-case complexity
    bound in a more general context. The algorithm employs several practical optimization
    techniques, which are of independent interest. Our sequential implementation of
    the algorithm is competitive with state-of-the-art methods, and we further improve
    the performance through parallel computation.
article_processing_charge: No
arxiv: 1
author:
- first_name: Ulrich
  full_name: Bauer, Ulrich
  id: 2ADD483A-F248-11E8-B48F-1D18A9856A87
  last_name: Bauer
  orcid: 0000-0002-9683-0724
- first_name: Michael
  full_name: Kerber, Michael
  last_name: Kerber
  orcid: 0000-0002-8030-9299
- first_name: Jan
  full_name: Reininghaus, Jan
  id: 4505473A-F248-11E8-B48F-1D18A9856A87
  last_name: Reininghaus
citation:
  ama: 'Bauer U, Kerber M, Reininghaus J. Clear and Compress: Computing Persistent
    Homology in Chunks. In: Bremer P-T, Hotz I, Pascucci V, Peikert R, eds. <i>Topological
    Methods in Data Analysis and Visualization III</i>. Mathematics and Visualization.
    Springer; 2014:103-117. doi:<a href="https://doi.org/10.1007/978-3-319-04099-8_7">10.1007/978-3-319-04099-8_7</a>'
  apa: 'Bauer, U., Kerber, M., &#38; Reininghaus, J. (2014). Clear and Compress: Computing
    Persistent Homology in Chunks. In P.-T. Bremer, I. Hotz, V. Pascucci, &#38; R.
    Peikert (Eds.), <i>Topological Methods in Data Analysis and Visualization III</i>
    (pp. 103–117). Springer. <a href="https://doi.org/10.1007/978-3-319-04099-8_7">https://doi.org/10.1007/978-3-319-04099-8_7</a>'
  chicago: 'Bauer, Ulrich, Michael Kerber, and Jan Reininghaus. “Clear and Compress:
    Computing Persistent Homology in Chunks.” In <i>Topological Methods in Data Analysis
    and Visualization III</i>, edited by Peer-Timo Bremer, Ingrid Hotz, Valerio Pascucci,
    and Ronald Peikert, 103–17. Mathematics and Visualization. Springer, 2014. <a
    href="https://doi.org/10.1007/978-3-319-04099-8_7">https://doi.org/10.1007/978-3-319-04099-8_7</a>.'
  ieee: 'U. Bauer, M. Kerber, and J. Reininghaus, “Clear and Compress: Computing Persistent
    Homology in Chunks,” in <i>Topological Methods in Data Analysis and Visualization
    III</i>, P.-T. Bremer, I. Hotz, V. Pascucci, and R. Peikert, Eds. Springer, 2014,
    pp. 103–117.'
  ista: 'Bauer U, Kerber M, Reininghaus J. 2014.Clear and Compress: Computing Persistent
    Homology in Chunks. In: Topological Methods in Data Analysis and Visualization
    III. , 103–117.'
  mla: 'Bauer, Ulrich, et al. “Clear and Compress: Computing Persistent Homology in
    Chunks.” <i>Topological Methods in Data Analysis and Visualization III</i>, edited
    by Peer-Timo Bremer et al., Springer, 2014, pp. 103–17, doi:<a href="https://doi.org/10.1007/978-3-319-04099-8_7">10.1007/978-3-319-04099-8_7</a>.'
  short: U. Bauer, M. Kerber, J. Reininghaus, in:, P.-T. Bremer, I. Hotz, V. Pascucci,
    R. Peikert (Eds.), Topological Methods in Data Analysis and Visualization III,
    Springer, 2014, pp. 103–117.
corr_author: '1'
date_created: 2018-12-11T11:55:23Z
date_published: 2014-03-19T00:00:00Z
date_updated: 2025-06-11T07:56:57Z
day: '19'
department:
- _id: HeEd
doi: 10.1007/978-3-319-04099-8_7
ec_funded: 1
editor:
- first_name: Peer-Timo
  full_name: Bremer, Peer-Timo
  last_name: Bremer
- first_name: Ingrid
  full_name: Hotz, Ingrid
  last_name: Hotz
- first_name: Valerio
  full_name: Pascucci, Valerio
  last_name: Pascucci
- first_name: Ronald
  full_name: Peikert, Ronald
  last_name: Peikert
external_id:
  arxiv:
  - '1303.0477'
fulldoi: https://doi.org/10.1007/978-3-319-04099-8_7
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1303.0477
month: '03'
oa: 1
oa_version: Submitted Version
page: 103 - 117
project:
- _id: 255D761E-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '318493'
  name: Topological Complex Systems
publication: Topological Methods in Data Analysis and Visualization III
publication_status: published
publisher: Springer
publist_id: '5007'
quality_controlled: '1'
scopus_import: '1'
series_title: Mathematics and Visualization
status: public
title: 'Clear and Compress: Computing Persistent Homology in Chunks'
type: book_chapter
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2014'
...
---
_id: '6853'
abstract:
- lang: eng
  text: This monograph presents a short course in computational geometry and topology.
    In the first part the book covers Voronoi diagrams and Delaunay triangulations,
    then it presents the theory of alpha complexes which play a crucial role in biology.
    The central part of the book is the homology theory and their computation, including
    the theory of persistence which is indispensable for applications, e.g. shape
    reconstruction. The target audience comprises researchers and practitioners in
    mathematics, biology, neuroscience and computer science, but the book may also
    be beneficial to graduate students of these fields.
alternative_title:
- SpringerBriefs in Applied Sciences and Technology
article_processing_charge: No
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
citation:
  ama: 'Edelsbrunner H. <i>A Short Course in Computational Geometry and Topology</i>.
    1st ed. Cham: Springer Nature; 2014. doi:<a href="https://doi.org/10.1007/978-3-319-05957-0">10.1007/978-3-319-05957-0</a>'
  apa: 'Edelsbrunner, H. (2014). <i>A Short Course in Computational Geometry and Topology</i>
    (1st ed.). Cham: Springer Nature. <a href="https://doi.org/10.1007/978-3-319-05957-0">https://doi.org/10.1007/978-3-319-05957-0</a>'
  chicago: 'Edelsbrunner, Herbert. <i>A Short Course in Computational Geometry and
    Topology</i>. 1st ed. SpringerBriefs in Applied Sciences and Technology. Cham:
    Springer Nature, 2014. <a href="https://doi.org/10.1007/978-3-319-05957-0">https://doi.org/10.1007/978-3-319-05957-0</a>.'
  ieee: 'H. Edelsbrunner, <i>A Short Course in Computational Geometry and Topology</i>,
    1st ed. Cham: Springer Nature, 2014.'
  ista: 'Edelsbrunner H. 2014. A Short Course in Computational Geometry and Topology
    1st ed., Cham: Springer Nature, IX, 110p.'
  mla: Edelsbrunner, Herbert. <i>A Short Course in Computational Geometry and Topology</i>.
    1st ed., Springer Nature, 2014, doi:<a href="https://doi.org/10.1007/978-3-319-05957-0">10.1007/978-3-319-05957-0</a>.
  short: H. Edelsbrunner, A Short Course in Computational Geometry and Topology, 1st
    ed., Springer Nature, Cham, 2014.
date_created: 2019-09-06T09:22:33Z
date_published: 2014-01-01T00:00:00Z
date_updated: 2022-03-04T07:47:54Z
day: '01'
department:
- _id: HeEd
doi: 10.1007/978-3-319-05957-0
edition: '1'
fulldoi: https://doi.org/10.1007/978-3-319-05957-0
language:
- iso: eng
month: '01'
oa_version: None
page: IX, 110
place: Cham
publication_identifier:
  eisbn:
  - 9-783-3190-5957-0
  eissn:
  - 2191-5318
  isbn:
  - 9-783-3190-5956-3
  issn:
  - 2191-530X
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  link:
  - description: available as eBook via catalog IST BookList
    relation: other
    url: https://koha.app.ist.ac.at/cgi-bin/koha/opac-detail.pl?biblionumber=356106
  - description: available via catalog IST BookList
    relation: other
    url: https://koha.app.ist.ac.at/cgi-bin/koha/opac-detail.pl?biblionumber=373842
scopus_import: '1'
series_title: SpringerBriefs in Applied Sciences and Technology
status: public
title: A Short Course in Computational Geometry and Topology
type: book
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2014'
...
---
_id: '1816'
abstract:
- lang: eng
  text: Watermarking techniques for vector graphics dislocate vertices in order to
    embed imperceptible, yet detectable, statistical features into the input data.
    The embedding process may result in a change of the topology of the input data,
    e.g., by introducing self-intersections, which is undesirable or even disastrous
    for many applications. In this paper we present a watermarking framework for two-dimensional
    vector graphics that employs conventional watermarking techniques but still provides
    the guarantee that the topology of the input data is preserved. The geometric
    part of this framework computes so-called maximum perturbation regions (MPR) of
    vertices. We propose two efficient algorithms to compute MPRs based on Voronoi
    diagrams and constrained triangulations. Furthermore, we present two algorithms
    to conditionally correct the watermarked data in order to increase the watermark
    embedding capacity and still guarantee topological correctness. While we focus
    on the watermarking of input formed by straight-line segments, one of our approaches
    can also be extended to circular arcs. We conclude the paper by demonstrating
    and analyzing the applicability of our framework in conjunction with two well-known
    watermarking techniques.
acknowledgement: 'Work by Martin Held and Stefan Huber was supported by Austrian Science
  Fund (FWF): L367-N15 and P25816-N15.'
author:
- first_name: Stefan
  full_name: Huber, Stefan
  id: 4700A070-F248-11E8-B48F-1D18A9856A87
  last_name: Huber
  orcid: 0000-0002-8871-5814
- first_name: Martin
  full_name: Held, Martin
  last_name: Held
- first_name: Peter
  full_name: Meerwald, Peter
  last_name: Meerwald
- first_name: Roland
  full_name: Kwitt, Roland
  last_name: Kwitt
citation:
  ama: Huber S, Held M, Meerwald P, Kwitt R. Topology-preserving watermarking of vector
    graphics. <i>International Journal of Computational Geometry and Applications</i>.
    2014;24(1):61-86. doi:<a href="https://doi.org/10.1142/S0218195914500034">10.1142/S0218195914500034</a>
  apa: Huber, S., Held, M., Meerwald, P., &#38; Kwitt, R. (2014). Topology-preserving
    watermarking of vector graphics. <i>International Journal of Computational Geometry
    and Applications</i>. World Scientific Publishing. <a href="https://doi.org/10.1142/S0218195914500034">https://doi.org/10.1142/S0218195914500034</a>
  chicago: Huber, Stefan, Martin Held, Peter Meerwald, and Roland Kwitt. “Topology-Preserving
    Watermarking of Vector Graphics.” <i>International Journal of Computational Geometry
    and Applications</i>. World Scientific Publishing, 2014. <a href="https://doi.org/10.1142/S0218195914500034">https://doi.org/10.1142/S0218195914500034</a>.
  ieee: S. Huber, M. Held, P. Meerwald, and R. Kwitt, “Topology-preserving watermarking
    of vector graphics,” <i>International Journal of Computational Geometry and Applications</i>,
    vol. 24, no. 1. World Scientific Publishing, pp. 61–86, 2014.
  ista: Huber S, Held M, Meerwald P, Kwitt R. 2014. Topology-preserving watermarking
    of vector graphics. International Journal of Computational Geometry and Applications.
    24(1), 61–86.
  mla: Huber, Stefan, et al. “Topology-Preserving Watermarking of Vector Graphics.”
    <i>International Journal of Computational Geometry and Applications</i>, vol.
    24, no. 1, World Scientific Publishing, 2014, pp. 61–86, doi:<a href="https://doi.org/10.1142/S0218195914500034">10.1142/S0218195914500034</a>.
  short: S. Huber, M. Held, P. Meerwald, R. Kwitt, International Journal of Computational
    Geometry and Applications 24 (2014) 61–86.
corr_author: '1'
date_created: 2018-12-11T11:54:10Z
date_published: 2014-03-16T00:00:00Z
date_updated: 2024-10-09T20:55:54Z
day: '16'
ddc:
- '000'
department:
- _id: HeEd
doi: 10.1142/S0218195914500034
file:
- access_level: open_access
  checksum: be45c133ab4d43351260e21beaa8f4b1
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:08:43Z
  date_updated: 2020-07-14T12:45:17Z
  file_id: '4704'
  file_name: IST-2016-443-v1+1_S0218195914500034.pdf
  file_size: 991734
  relation: main_file
file_date_updated: 2020-07-14T12:45:17Z
fulldoi: https://doi.org/10.1142/S0218195914500034
has_accepted_license: '1'
intvolume: '        24'
issue: '1'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 61 - 86
publication: International Journal of Computational Geometry and Applications
publication_status: published
publisher: World Scientific Publishing
publist_id: '5290'
pubrep_id: '443'
quality_controlled: '1'
scopus_import: 1
status: public
title: Topology-preserving watermarking of vector graphics
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 24
year: '2014'
...
---
_id: '1842'
abstract:
- lang: eng
  text: We prove polynomial upper bounds of geometric Ramsey numbers of pathwidth-2
    outerplanar triangulations in both convex and general cases. We also prove that
    the geometric Ramsey numbers of the ladder graph on 2n vertices are bounded by
    O(n3) and O(n10), in the convex and general case, respectively. We then apply
    similar methods to prove an (Formula presented.) upper bound on the Ramsey number
    of a path with n ordered vertices.
acknowledgement: Marek Krčál was supported by the ERC Advanced Grant No. 267165.
article_processing_charge: No
arxiv: 1
author:
- first_name: Josef
  full_name: Cibulka, Josef
  last_name: Cibulka
- first_name: Pu
  full_name: Gao, Pu
  last_name: Gao
- first_name: Marek
  full_name: Krcál, Marek
  id: 33E21118-F248-11E8-B48F-1D18A9856A87
  last_name: Krcál
- first_name: Tomáš
  full_name: Valla, Tomáš
  last_name: Valla
- first_name: Pavel
  full_name: Valtr, Pavel
  last_name: Valtr
citation:
  ama: Cibulka J, Gao P, Krcál M, Valla T, Valtr P. On the geometric ramsey number
    of outerplanar graphs. <i>Discrete &#38; Computational Geometry</i>. 2014;53(1):64-79.
    doi:<a href="https://doi.org/10.1007/s00454-014-9646-x">10.1007/s00454-014-9646-x</a>
  apa: Cibulka, J., Gao, P., Krcál, M., Valla, T., &#38; Valtr, P. (2014). On the
    geometric ramsey number of outerplanar graphs. <i>Discrete &#38; Computational
    Geometry</i>. Springer. <a href="https://doi.org/10.1007/s00454-014-9646-x">https://doi.org/10.1007/s00454-014-9646-x</a>
  chicago: Cibulka, Josef, Pu Gao, Marek Krcál, Tomáš Valla, and Pavel Valtr. “On
    the Geometric Ramsey Number of Outerplanar Graphs.” <i>Discrete &#38; Computational
    Geometry</i>. Springer, 2014. <a href="https://doi.org/10.1007/s00454-014-9646-x">https://doi.org/10.1007/s00454-014-9646-x</a>.
  ieee: J. Cibulka, P. Gao, M. Krcál, T. Valla, and P. Valtr, “On the geometric ramsey
    number of outerplanar graphs,” <i>Discrete &#38; Computational Geometry</i>, vol.
    53, no. 1. Springer, pp. 64–79, 2014.
  ista: Cibulka J, Gao P, Krcál M, Valla T, Valtr P. 2014. On the geometric ramsey
    number of outerplanar graphs. Discrete &#38; Computational Geometry. 53(1), 64–79.
  mla: Cibulka, Josef, et al. “On the Geometric Ramsey Number of Outerplanar Graphs.”
    <i>Discrete &#38; Computational Geometry</i>, vol. 53, no. 1, Springer, 2014,
    pp. 64–79, doi:<a href="https://doi.org/10.1007/s00454-014-9646-x">10.1007/s00454-014-9646-x</a>.
  short: J. Cibulka, P. Gao, M. Krcál, T. Valla, P. Valtr, Discrete &#38; Computational
    Geometry 53 (2014) 64–79.
date_created: 2018-12-11T11:54:18Z
date_published: 2014-11-14T00:00:00Z
date_updated: 2025-09-29T13:11:56Z
day: '14'
department:
- _id: UlWa
- _id: HeEd
doi: 10.1007/s00454-014-9646-x
external_id:
  arxiv:
  - '1310.7004'
  isi:
  - '000346774600005'
fulldoi: https://doi.org/10.1007/s00454-014-9646-x
intvolume: '        53'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1310.7004
month: '11'
oa: 1
oa_version: Submitted Version
page: 64 - 79
publication: Discrete & Computational Geometry
publication_status: published
publisher: Springer
publist_id: '5260'
scopus_import: '1'
status: public
title: On the geometric ramsey number of outerplanar graphs
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 53
year: '2014'
...
---
_id: '2905'
abstract:
- lang: eng
  text: "Persistent homology is a recent grandchild of homology that has found use
    in\r\nscience and engineering as well as in mathematics. This paper surveys the
    method as well\r\nas the applications, neglecting completeness in favor of highlighting
    ideas and directions."
acknowledgement: This research is partially supported by NSF under grant DBI-0820624,
  by ESF under the Research Networking Programme, and by the Russian Government Project
  11.G34.31.0053.
article_processing_charge: No
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Dmitriy
  full_name: Morozovy, Dmitriy
  last_name: Morozovy
citation:
  ama: 'Edelsbrunner H, Morozovy D. Persistent homology: Theory and practice. In:
    EMS Press; 2014:31-50. doi:<a href="https://doi.org/10.4171/120-1/3">10.4171/120-1/3</a>'
  apa: 'Edelsbrunner, H., &#38; Morozovy, D. (2014). Persistent homology: Theory and
    practice (pp. 31–50). Presented at the ECM: European Congress of Mathematics,
    Kraków, Poland: EMS Press. <a href="https://doi.org/10.4171/120-1/3">https://doi.org/10.4171/120-1/3</a>'
  chicago: 'Edelsbrunner, Herbert, and Dmitriy Morozovy. “Persistent Homology: Theory
    and Practice,” 31–50. EMS Press, 2014. <a href="https://doi.org/10.4171/120-1/3">https://doi.org/10.4171/120-1/3</a>.'
  ieee: 'H. Edelsbrunner and D. Morozovy, “Persistent homology: Theory and practice,”
    presented at the ECM: European Congress of Mathematics, Kraków, Poland, 2014,
    pp. 31–50.'
  ista: 'Edelsbrunner H, Morozovy D. 2014. Persistent homology: Theory and practice.
    ECM: European Congress of Mathematics, 31–50.'
  mla: 'Edelsbrunner, Herbert, and Dmitriy Morozovy. <i>Persistent Homology: Theory
    and Practice</i>. EMS Press, 2014, pp. 31–50, doi:<a href="https://doi.org/10.4171/120-1/3">10.4171/120-1/3</a>.'
  short: H. Edelsbrunner, D. Morozovy, in:, EMS Press, 2014, pp. 31–50.
conference:
  end_date: 2012-07-07
  location: Kraków, Poland
  name: 'ECM: European Congress of Mathematics'
  start_date: 2012-07-02
corr_author: '1'
das_tickbox: '1'
date_created: 2018-12-11T12:00:16Z
date_published: 2014-01-01T00:00:00Z
date_updated: 2026-07-06T11:55:48Z
day: '01'
ddc:
- '000'
department:
- _id: HeEd
doi: 10.4171/120-1/3
file:
- access_level: open_access
  checksum: 1d4a046f1af945c407c5c4d411d4c5e4
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:16:43Z
  date_updated: 2020-07-14T12:45:52Z
  file_id: '5232'
  file_name: IST-2016-544-v1+1_2012-P-11-PHTheoryPractice.pdf
  file_size: 435320
  relation: main_file
file_date_updated: 2020-07-14T12:45:52Z
fulldoi: https://doi.org/10.4171/120-1/3
has_accepted_license: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Submitted Version
page: 31 - 50
publication_status: published
publisher: EMS Press
publist_id: '3842'
pubrep_id: '544'
quality_controlled: '1'
status: public
title: 'Persistent homology: Theory and practice'
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2014'
...
---
_id: '2255'
abstract:
- lang: eng
  text: Motivated by applications in biology, we present an algorithm for estimating
    the length of tube-like shapes in 3-dimensional Euclidean space. In a first step,
    we combine the tube formula of Weyl with integral geometric methods to obtain
    an integral representation of the length, which we approximate using a variant
    of the Koksma-Hlawka Theorem. In a second step, we use tools from computational
    topology to decrease the dependence on small perturbations of the shape. We present
    computational experiments that shed light on the stability and the convergence
    rate of our algorithm.
article_processing_charge: No
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Florian
  full_name: Pausinger, Florian
  id: 2A77D7A2-F248-11E8-B48F-1D18A9856A87
  last_name: Pausinger
  orcid: 0000-0002-8379-3768
citation:
  ama: Edelsbrunner H, Pausinger F. Stable length estimates of tube-like shapes. <i>Journal
    of Mathematical Imaging and Vision</i>. 2014;50(1):164-177. doi:<a href="https://doi.org/10.1007/s10851-013-0468-x">10.1007/s10851-013-0468-x</a>
  apa: Edelsbrunner, H., &#38; Pausinger, F. (2014). Stable length estimates of tube-like
    shapes. <i>Journal of Mathematical Imaging and Vision</i>. Springer. <a href="https://doi.org/10.1007/s10851-013-0468-x">https://doi.org/10.1007/s10851-013-0468-x</a>
  chicago: Edelsbrunner, Herbert, and Florian Pausinger. “Stable Length Estimates
    of Tube-like Shapes.” <i>Journal of Mathematical Imaging and Vision</i>. Springer,
    2014. <a href="https://doi.org/10.1007/s10851-013-0468-x">https://doi.org/10.1007/s10851-013-0468-x</a>.
  ieee: H. Edelsbrunner and F. Pausinger, “Stable length estimates of tube-like shapes,”
    <i>Journal of Mathematical Imaging and Vision</i>, vol. 50, no. 1. Springer, pp.
    164–177, 2014.
  ista: Edelsbrunner H, Pausinger F. 2014. Stable length estimates of tube-like shapes.
    Journal of Mathematical Imaging and Vision. 50(1), 164–177.
  mla: Edelsbrunner, Herbert, and Florian Pausinger. “Stable Length Estimates of Tube-like
    Shapes.” <i>Journal of Mathematical Imaging and Vision</i>, vol. 50, no. 1, Springer,
    2014, pp. 164–77, doi:<a href="https://doi.org/10.1007/s10851-013-0468-x">10.1007/s10851-013-0468-x</a>.
  short: H. Edelsbrunner, F. Pausinger, Journal of Mathematical Imaging and Vision
    50 (2014) 164–177.
corr_author: '1'
date_created: 2018-12-11T11:56:36Z
date_published: 2014-09-01T00:00:00Z
date_updated: 2026-07-29T10:08:33Z
day: '01'
ddc:
- '000'
department:
- _id: HeEd
doi: 10.1007/s10851-013-0468-x
ec_funded: 1
external_id:
  isi:
  - '000339823000012'
file:
- access_level: open_access
  checksum: 2f93f3e63a38a85cd4404d7953913b14
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:16:18Z
  date_updated: 2020-07-14T12:45:35Z
  file_id: '5204'
  file_name: IST-2016-549-v1+1_2014-J-06-LengthEstimate.pdf
  file_size: 3941391
  relation: main_file
file_date_updated: 2020-07-14T12:45:35Z
fulldoi: https://doi.org/10.1007/s10851-013-0468-x
has_accepted_license: '1'
intvolume: '        50'
isi: 1
issue: '1'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Submitted Version
page: 164 - 177
project:
- _id: 255D761E-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '318493'
  name: Topological Complex Systems
publication: Journal of Mathematical Imaging and Vision
publication_identifier:
  issn:
  - 0924-9907
publication_status: published
publisher: Springer
publist_id: '4691'
pubrep_id: '549'
quality_controlled: '1'
related_material:
  record:
  - id: '2843'
    relation: earlier_version
    status: public
  - id: '1399'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Stable length estimates of tube-like shapes
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 50
year: '2014'
...
---
_id: '10897'
abstract:
- lang: eng
  text: Taking images is an efficient way to collect data about the physical world.
    It can be done fast and in exquisite detail. By definition, image processing is
    the field that concerns itself with the computation aimed at harnessing the information
    contained in images [10]. This talk is concerned with topological information.
    Our main thesis is that persistent homology [5] is a useful method to quantify
    and summarize topological information, building a bridge that connects algebraic
    topology with applications. We provide supporting evidence for this thesis by
    touching upon four technical developments in the overlap between persistent homology
    and image processing.
acknowledgement: This research is partially supported by the European Science Foundation
  (ESF) under the Research Network Programme, the European Union under the Toposys
  Project FP7-ICT-318493-STREP, the Russian Government under the Mega Project 11.G34.31.0053.
article_processing_charge: No
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
citation:
  ama: 'Edelsbrunner H. Persistent homology in image processing. In: <i>Graph-Based
    Representations in Pattern Recognition</i>. Vol 7877. LNCS. Berlin, Heidelberg:
    Springer Nature; 2013:182-183. doi:<a href="https://doi.org/10.1007/978-3-642-38221-5_19">10.1007/978-3-642-38221-5_19</a>'
  apa: 'Edelsbrunner, H. (2013). Persistent homology in image processing. In <i>Graph-Based
    Representations in Pattern Recognition</i> (Vol. 7877, pp. 182–183). Berlin, Heidelberg:
    Springer Nature. <a href="https://doi.org/10.1007/978-3-642-38221-5_19">https://doi.org/10.1007/978-3-642-38221-5_19</a>'
  chicago: 'Edelsbrunner, Herbert. “Persistent Homology in Image Processing.” In <i>Graph-Based
    Representations in Pattern Recognition</i>, 7877:182–83. LNCS. Berlin, Heidelberg:
    Springer Nature, 2013. <a href="https://doi.org/10.1007/978-3-642-38221-5_19">https://doi.org/10.1007/978-3-642-38221-5_19</a>.'
  ieee: H. Edelsbrunner, “Persistent homology in image processing,” in <i>Graph-Based
    Representations in Pattern Recognition</i>, Vienna, Austria, 2013, vol. 7877,
    pp. 182–183.
  ista: 'Edelsbrunner H. 2013. Persistent homology in image processing. Graph-Based
    Representations in Pattern Recognition. GbRPR: Graph-based Representations in
    Pattern RecognitionLNCS vol. 7877, 182–183.'
  mla: Edelsbrunner, Herbert. “Persistent Homology in Image Processing.” <i>Graph-Based
    Representations in Pattern Recognition</i>, vol. 7877, Springer Nature, 2013,
    pp. 182–83, doi:<a href="https://doi.org/10.1007/978-3-642-38221-5_19">10.1007/978-3-642-38221-5_19</a>.
  short: H. Edelsbrunner, in:, Graph-Based Representations in Pattern Recognition,
    Springer Nature, Berlin, Heidelberg, 2013, pp. 182–183.
conference:
  end_date: 2013-05-17
  location: Vienna, Austria
  name: 'GbRPR: Graph-based Representations in Pattern Recognition'
  start_date: 2013-05-15
corr_author: '1'
date_created: 2022-03-21T07:30:33Z
date_published: 2013-06-01T00:00:00Z
date_updated: 2025-04-15T08:37:54Z
day: '01'
department:
- _id: HeEd
doi: 10.1007/978-3-642-38221-5_19
ec_funded: 1
fulldoi: https://doi.org/10.1007/978-3-642-38221-5_19
intvolume: '      7877'
language:
- iso: eng
month: '06'
oa_version: None
page: 182-183
place: Berlin, Heidelberg
project:
- _id: 255D761E-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '318493'
  name: Topological Complex Systems
publication: Graph-Based Representations in Pattern Recognition
publication_identifier:
  eisbn:
  - '9783642382215'
  eissn:
  - 1611-3349
  isbn:
  - '9783642382208'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
series_title: LNCS
status: public
title: Persistent homology in image processing
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 7877
year: '2013'
...
---
_id: '2209'
abstract:
- lang: eng
  text: "A straight skeleton is a well-known geometric structure, and several algorithms
    exist to construct the straight skeleton for a given polygon or planar straight-line
    graph. In this paper, we ask the reverse question: Given the straight skeleton
    (in form of a planar straight-line graph, with some rays to infinity), can we
    reconstruct a planar straight-line graph for which this was the straight skeleton?
    We show how to reduce this problem to the problem of finding a line that intersects
    a set of convex polygons. We can find these convex polygons and all such lines
    in $O(nlog n)$ time in the Real RAM computer model, where $n$ denotes the number
    of edges of the input graph. We also explain how our approach can be used for
    recognizing Voronoi diagrams of points, thereby completing a partial solution
    provided by Ash and Bolker in 1985.\r\n"
alternative_title:
- '2013 10th International Symposium on Voronoi Diagrams in Science and Engineering
  (ISVD 2013) '
article_processing_charge: No
author:
- first_name: Therese
  full_name: Biedl, Therese
  last_name: Biedl
- first_name: Martin
  full_name: Held, Martin
  last_name: Held
- first_name: Stefan
  full_name: Huber, Stefan
  id: 4700A070-F248-11E8-B48F-1D18A9856A87
  last_name: Huber
  orcid: 0000-0002-8871-5814
citation:
  ama: 'Biedl T, Held M, Huber S. Recognizing straight skeletons and Voronoi diagrams
    and reconstructing their input. In: IEEE; 2013:37-46. doi:<a href="https://doi.org/10.1109/ISVD.2013.11">10.1109/ISVD.2013.11</a>'
  apa: 'Biedl, T., Held, M., &#38; Huber, S. (2013). Recognizing straight skeletons
    and Voronoi diagrams and reconstructing their input (pp. 37–46). Presented at
    the ISVD: Voronoi Diagrams in Science and Engineering, St. Petersburg, Russia:
    IEEE. <a href="https://doi.org/10.1109/ISVD.2013.11">https://doi.org/10.1109/ISVD.2013.11</a>'
  chicago: Biedl, Therese, Martin Held, and Stefan Huber. “Recognizing Straight Skeletons
    and Voronoi Diagrams and Reconstructing Their Input,” 37–46. IEEE, 2013. <a href="https://doi.org/10.1109/ISVD.2013.11">https://doi.org/10.1109/ISVD.2013.11</a>.
  ieee: 'T. Biedl, M. Held, and S. Huber, “Recognizing straight skeletons and Voronoi
    diagrams and reconstructing their input,” presented at the ISVD: Voronoi Diagrams
    in Science and Engineering, St. Petersburg, Russia, 2013, pp. 37–46.'
  ista: 'Biedl T, Held M, Huber S. 2013. Recognizing straight skeletons and Voronoi
    diagrams and reconstructing their input. ISVD: Voronoi Diagrams in Science and
    Engineering, 2013 10th International Symposium on Voronoi Diagrams in Science
    and Engineering (ISVD 2013) , , 37–46.'
  mla: Biedl, Therese, et al. <i>Recognizing Straight Skeletons and Voronoi Diagrams
    and Reconstructing Their Input</i>. IEEE, 2013, pp. 37–46, doi:<a href="https://doi.org/10.1109/ISVD.2013.11">10.1109/ISVD.2013.11</a>.
  short: T. Biedl, M. Held, S. Huber, in:, IEEE, 2013, pp. 37–46.
conference:
  end_date: 2013-07-10
  location: St. Petersburg, Russia
  name: 'ISVD: Voronoi Diagrams in Science and Engineering'
  start_date: 2013-07-08
date_created: 2018-12-11T11:56:20Z
date_published: 2013-12-01T00:00:00Z
date_updated: 2025-09-29T14:30:56Z
day: '01'
department:
- _id: HeEd
doi: 10.1109/ISVD.2013.11
external_id:
  isi:
  - '000430602800007'
fulldoi: https://doi.org/10.1109/ISVD.2013.11
isi: 1
language:
- iso: eng
month: '12'
oa_version: None
page: 37 - 46
publication_identifier:
  eisbn:
  - '978-0-7695-5037-4 '
publication_status: published
publisher: IEEE
publist_id: '4763'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Recognizing straight skeletons and Voronoi diagrams and reconstructing their
  input
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
year: '2013'
...
---
_id: '2210'
abstract:
- lang: eng
  text: 'A straight skeleton is a well-known geometric structure, and several algorithms
    exist to construct the straight skeleton for a given polygon. In this paper, we
    ask the reverse question: Given the straight skeleton (in form of a tree with
    a drawing in the plane, but with the exact position of the leaves unspecified),
    can we reconstruct the polygon? We show that in most cases there exists at most
    one polygon; in the remaining case there is an infinite number of polygons determined
    by one angle that can range in an interval. We can find this (set of) polygon(s)
    in linear time in the Real RAM computer model.'
author:
- first_name: Therese
  full_name: Biedl, Therese
  last_name: Biedl
- first_name: Martin
  full_name: Held, Martin
  last_name: Held
- first_name: Stefan
  full_name: Huber, Stefan
  id: 4700A070-F248-11E8-B48F-1D18A9856A87
  last_name: Huber
  orcid: 0000-0002-8871-5814
citation:
  ama: 'Biedl T, Held M, Huber S. Reconstructing polygons from embedded straight skeletons.
    In: <i>29th European Workshop on Computational Geometry</i>. TU Braunschweig;
    2013:95-98.'
  apa: 'Biedl, T., Held, M., &#38; Huber, S. (2013). Reconstructing polygons from
    embedded straight skeletons. In <i>29th European Workshop on Computational Geometry</i>
    (pp. 95–98). Braunschweig, Germany: TU Braunschweig.'
  chicago: Biedl, Therese, Martin Held, and Stefan Huber. “Reconstructing Polygons
    from Embedded Straight Skeletons.” In <i>29th European Workshop on Computational
    Geometry</i>, 95–98. TU Braunschweig, 2013.
  ieee: T. Biedl, M. Held, and S. Huber, “Reconstructing polygons from embedded straight
    skeletons,” in <i>29th European Workshop on Computational Geometry</i>, Braunschweig,
    Germany, 2013, pp. 95–98.
  ista: 'Biedl T, Held M, Huber S. 2013. Reconstructing polygons from embedded straight
    skeletons. 29th European Workshop on Computational Geometry. EuroCG: European
    Workshop on Computational Geometry, 95–98.'
  mla: Biedl, Therese, et al. “Reconstructing Polygons from Embedded Straight Skeletons.”
    <i>29th European Workshop on Computational Geometry</i>, TU Braunschweig, 2013,
    pp. 95–98.
  short: T. Biedl, M. Held, S. Huber, in:, 29th European Workshop on Computational
    Geometry, TU Braunschweig, 2013, pp. 95–98.
conference:
  end_date: 2013-03-20
  location: Braunschweig, Germany
  name: 'EuroCG: European Workshop on Computational Geometry'
  start_date: 2013-03-17
date_created: 2018-12-11T11:56:21Z
date_published: 2013-03-01T00:00:00Z
date_updated: 2021-01-12T06:56:00Z
day: '01'
department:
- _id: HeEd
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://www.ibr.cs.tu-bs.de/alg/eurocg13/booklet_eurocg13.pdf
month: '03'
oa: 1
oa_version: Submitted Version
page: 95 - 98
publication: 29th European Workshop on Computational Geometry
publication_status: published
publisher: TU Braunschweig
publist_id: '4762'
status: public
title: Reconstructing polygons from embedded straight skeletons
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2013'
...
---
_id: '2304'
abstract:
- lang: eng
  text: This extended abstract is concerned with the irregularities of distribution
    of one-dimensional permuted van der Corput sequences that are generated from linear
    permutations. We show how to obtain upper bounds for the discrepancy and diaphony
    of these sequences, by relating them to Kronecker sequences and applying earlier
    results of Faure and Niederreiter.
acknowledgement: This research is supported by the Graduate school of IST Austria
  (Institute of Science and Technology Austria).
author:
- first_name: Florian
  full_name: Pausinger, Florian
  id: 2A77D7A2-F248-11E8-B48F-1D18A9856A87
  last_name: Pausinger
  orcid: 0000-0002-8379-3768
citation:
  ama: Pausinger F. Van der Corput sequences and linear permutations. <i>Electronic
    Notes in Discrete Mathematics</i>. 2013;43:43-50. doi:<a href="https://doi.org/10.1016/j.endm.2013.07.008">10.1016/j.endm.2013.07.008</a>
  apa: Pausinger, F. (2013). Van der Corput sequences and linear permutations. <i>Electronic
    Notes in Discrete Mathematics</i>. Elsevier. <a href="https://doi.org/10.1016/j.endm.2013.07.008">https://doi.org/10.1016/j.endm.2013.07.008</a>
  chicago: Pausinger, Florian. “Van Der Corput Sequences and Linear Permutations.”
    <i>Electronic Notes in Discrete Mathematics</i>. Elsevier, 2013. <a href="https://doi.org/10.1016/j.endm.2013.07.008">https://doi.org/10.1016/j.endm.2013.07.008</a>.
  ieee: F. Pausinger, “Van der Corput sequences and linear permutations,” <i>Electronic
    Notes in Discrete Mathematics</i>, vol. 43. Elsevier, pp. 43–50, 2013.
  ista: Pausinger F. 2013. Van der Corput sequences and linear permutations. Electronic
    Notes in Discrete Mathematics. 43, 43–50.
  mla: Pausinger, Florian. “Van Der Corput Sequences and Linear Permutations.” <i>Electronic
    Notes in Discrete Mathematics</i>, vol. 43, Elsevier, 2013, pp. 43–50, doi:<a
    href="https://doi.org/10.1016/j.endm.2013.07.008">10.1016/j.endm.2013.07.008</a>.
  short: F. Pausinger, Electronic Notes in Discrete Mathematics 43 (2013) 43–50.
corr_author: '1'
date_created: 2018-12-11T11:56:53Z
date_published: 2013-09-05T00:00:00Z
date_updated: 2024-10-09T20:55:15Z
day: '05'
department:
- _id: HeEd
doi: 10.1016/j.endm.2013.07.008
fulldoi: https://doi.org/10.1016/j.endm.2013.07.008
intvolume: '        43'
language:
- iso: eng
month: '09'
oa_version: None
page: 43 - 50
publication: Electronic Notes in Discrete Mathematics
publication_status: published
publisher: Elsevier
publist_id: '4623'
quality_controlled: '1'
scopus_import: 1
status: public
title: Van der Corput sequences and linear permutations
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 43
year: '2013'
...
---
_id: '2807'
abstract:
- lang: eng
  text: 'We consider several basic problems of algebraic topology, with connections
    to combinatorial and geometric questions, from the point of view of computational
    complexity. The extension problem asks, given topological spaces X; Y , a subspace
    A ⊆ X, and a (continuous) map f : A → Y , whether f can be extended to a map X
    → Y . For computational purposes, we assume that X and Y are represented as finite
    simplicial complexes, A is a subcomplex of X, and f is given as a simplicial map.
    In this generality the problem is undecidable, as follows from Novikov''s result
    from the 1950s on uncomputability of the fundamental group π1(Y ). We thus study
    the problem under the assumption that, for some k ≥ 2, Y is (k - 1)-connected;
    informally, this means that Y has \no holes up to dimension k-1&quot; (a basic
    example of such a Y is the sphere Sk). We prove that, on the one hand, this problem
    is still undecidable for dimX = 2k. On the other hand, for every fixed k ≥ 2,
    we obtain an algorithm that solves the extension problem in polynomial time assuming
    Y (k - 1)-connected and dimX ≤ 2k - 1. For dimX ≤ 2k - 2, the algorithm also provides
    a classification of all extensions up to homotopy (continuous deformation). This
    relies on results of our SODA 2012 paper, and the main new ingredient is a machinery
    of objects with polynomial-time homology, which is a polynomial-time analog of
    objects with effective homology developed earlier by Sergeraert et al. We also
    consider the computation of the higher homotopy groups πk(Y ), k ≥ 2, for a 1-connected
    Y . Their computability was established by Brown in 1957; we show that πk(Y )
    can be computed in polynomial time for every fixed k ≥ 2. On the other hand, Anick
    proved in 1989 that computing πk(Y ) is #P-hard if k is a part of input, where
    Y is a cell complex with certain rather compact encoding. We strengthen his result
    to #P-hardness for Y given as a simplicial complex. '
author:
- first_name: Martin
  full_name: Čadek, Martin
  last_name: Čadek
- first_name: Marek
  full_name: Krcál, Marek
  id: 33E21118-F248-11E8-B48F-1D18A9856A87
  last_name: Krcál
- first_name: Jiří
  full_name: Matoušek, Jiří
  last_name: Matoušek
- first_name: Lukáš
  full_name: Vokřínek, Lukáš
  last_name: Vokřínek
- first_name: Uli
  full_name: Wagner, Uli
  id: 36690CA2-F248-11E8-B48F-1D18A9856A87
  last_name: Wagner
  orcid: 0000-0002-1494-0568
citation:
  ama: 'Čadek M, Krcál M, Matoušek J, Vokřínek L, Wagner U. Extending continuous maps:
    Polynomiality and undecidability. In: <i>45th Annual ACM Symposium on Theory of
    Computing</i>. ACM; 2013:595-604. doi:<a href="https://doi.org/10.1145/2488608.2488683">10.1145/2488608.2488683</a>'
  apa: 'Čadek, M., Krcál, M., Matoušek, J., Vokřínek, L., &#38; Wagner, U. (2013).
    Extending continuous maps: Polynomiality and undecidability. In <i>45th Annual
    ACM Symposium on theory of computing</i> (pp. 595–604). Palo Alto, CA, United
    States: ACM. <a href="https://doi.org/10.1145/2488608.2488683">https://doi.org/10.1145/2488608.2488683</a>'
  chicago: 'Čadek, Martin, Marek Krcál, Jiří Matoušek, Lukáš Vokřínek, and Uli Wagner.
    “Extending Continuous Maps: Polynomiality and Undecidability.” In <i>45th Annual
    ACM Symposium on Theory of Computing</i>, 595–604. ACM, 2013. <a href="https://doi.org/10.1145/2488608.2488683">https://doi.org/10.1145/2488608.2488683</a>.'
  ieee: 'M. Čadek, M. Krcál, J. Matoušek, L. Vokřínek, and U. Wagner, “Extending continuous
    maps: Polynomiality and undecidability,” in <i>45th Annual ACM Symposium on theory
    of computing</i>, Palo Alto, CA, United States, 2013, pp. 595–604.'
  ista: 'Čadek M, Krcál M, Matoušek J, Vokřínek L, Wagner U. 2013. Extending continuous
    maps: Polynomiality and undecidability. 45th Annual ACM Symposium on theory of
    computing. STOC: Symposium on the Theory of Computing, 595–604.'
  mla: 'Čadek, Martin, et al. “Extending Continuous Maps: Polynomiality and Undecidability.”
    <i>45th Annual ACM Symposium on Theory of Computing</i>, ACM, 2013, pp. 595–604,
    doi:<a href="https://doi.org/10.1145/2488608.2488683">10.1145/2488608.2488683</a>.'
  short: M. Čadek, M. Krcál, J. Matoušek, L. Vokřínek, U. Wagner, in:, 45th Annual
    ACM Symposium on Theory of Computing, ACM, 2013, pp. 595–604.
conference:
  end_date: 2013-06-04
  location: Palo Alto, CA, United States
  name: 'STOC: Symposium on the Theory of Computing'
  start_date: 2013-06-01
date_created: 2018-12-11T11:59:42Z
date_published: 2013-06-01T00:00:00Z
date_updated: 2021-01-12T06:59:51Z
day: '01'
ddc:
- '510'
department:
- _id: UlWa
- _id: HeEd
doi: 10.1145/2488608.2488683
file:
- access_level: open_access
  checksum: 06c2ce5c1135fbc1f71ca15eeb242dcf
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:14:29Z
  date_updated: 2020-07-14T12:45:48Z
  file_id: '5081'
  file_name: IST-2016-533-v1+1_Extending_continuous_maps_polynomiality_and_undecidability.pdf
  file_size: 447945
  relation: main_file
file_date_updated: 2020-07-14T12:45:48Z
fulldoi: https://doi.org/10.1145/2488608.2488683
has_accepted_license: '1'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Submitted Version
page: 595 - 604
publication: 45th Annual ACM Symposium on theory of computing
publication_status: published
publisher: ACM
publist_id: '4078'
pubrep_id: '533'
quality_controlled: '1'
scopus_import: 1
status: public
title: 'Extending continuous maps: Polynomiality and undecidability'
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2013'
...
---
_id: '2812'
abstract:
- lang: eng
  text: 'We consider the problem of deciding whether the persistent homology group
    of a simplicial pair (K, L) can be realized as the homology H* (X) of some complex
    X with L ⊂ X ⊂ K. We show that this problem is NP-complete even if K is embedded
    in ℝ3. As a consequence, we show that it is NP-hard to simplify level and sublevel
    sets of scalar functions on S3 within a given tolerance constraint. This problem
    has relevance to the visualization of medical images by isosurfaces. We also show
    an implication to the theory of well groups of scalar functions: not every well
    group can be realized by some level set, and deciding whether a well group can
    be realized is NP-hard.'
acknowledgement: Some of the authors were partially supported by the GIGA ANR grant
  (contract ANR-09-BLAN-0331-01) and the European project CG-Learning (contract 255827).
author:
- first_name: Dominique
  full_name: Attali, Dominique
  last_name: Attali
- first_name: Ulrich
  full_name: Bauer, Ulrich
  id: 2ADD483A-F248-11E8-B48F-1D18A9856A87
  last_name: Bauer
  orcid: 0000-0002-9683-0724
- first_name: Olivier
  full_name: Devillers, Olivier
  last_name: Devillers
- first_name: Marc
  full_name: Glisse, Marc
  last_name: Glisse
- first_name: André
  full_name: Lieutier, André
  last_name: Lieutier
citation:
  ama: 'Attali D, Bauer U, Devillers O, Glisse M, Lieutier A. Homological reconstruction
    and simplification in R3. In: <i>Proceedings of the 29th Annual Symposium on Computational
    Geometry</i>. ACM; 2013:117-125. doi:<a href="https://doi.org/10.1145/2462356.2462373">10.1145/2462356.2462373</a>'
  apa: 'Attali, D., Bauer, U., Devillers, O., Glisse, M., &#38; Lieutier, A. (2013).
    Homological reconstruction and simplification in R3. In <i>Proceedings of the
    29th annual symposium on Computational Geometry</i> (pp. 117–125). Rio de Janeiro,
    Brazil: ACM. <a href="https://doi.org/10.1145/2462356.2462373">https://doi.org/10.1145/2462356.2462373</a>'
  chicago: Attali, Dominique, Ulrich Bauer, Olivier Devillers, Marc Glisse, and André
    Lieutier. “Homological Reconstruction and Simplification in R3.” In <i>Proceedings
    of the 29th Annual Symposium on Computational Geometry</i>, 117–25. ACM, 2013.
    <a href="https://doi.org/10.1145/2462356.2462373">https://doi.org/10.1145/2462356.2462373</a>.
  ieee: D. Attali, U. Bauer, O. Devillers, M. Glisse, and A. Lieutier, “Homological
    reconstruction and simplification in R3,” in <i>Proceedings of the 29th annual
    symposium on Computational Geometry</i>, Rio de Janeiro, Brazil, 2013, pp. 117–125.
  ista: 'Attali D, Bauer U, Devillers O, Glisse M, Lieutier A. 2013. Homological reconstruction
    and simplification in R3. Proceedings of the 29th annual symposium on Computational
    Geometry. SoCG: Symposium on Computational Geometry, 117–125.'
  mla: Attali, Dominique, et al. “Homological Reconstruction and Simplification in
    R3.” <i>Proceedings of the 29th Annual Symposium on Computational Geometry</i>,
    ACM, 2013, pp. 117–25, doi:<a href="https://doi.org/10.1145/2462356.2462373">10.1145/2462356.2462373</a>.
  short: D. Attali, U. Bauer, O. Devillers, M. Glisse, A. Lieutier, in:, Proceedings
    of the 29th Annual Symposium on Computational Geometry, ACM, 2013, pp. 117–125.
conference:
  end_date: 2013-06-20
  location: Rio de Janeiro, Brazil
  name: 'SoCG: Symposium on Computational Geometry'
  start_date: 2013-06-17
date_created: 2018-12-11T11:59:44Z
date_published: 2013-06-01T00:00:00Z
date_updated: 2026-06-18T17:57:27Z
day: '01'
department:
- _id: HeEd
doi: 10.1145/2462356.2462373
fulldoi: https://doi.org/10.1145/2462356.2462373
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://hal.archives-ouvertes.fr/hal-00833791/
month: '06'
oa: 1
oa_version: Submitted Version
page: 117 - 125
publication: Proceedings of the 29th annual symposium on Computational Geometry
publication_status: published
publisher: ACM
publist_id: '4072'
quality_controlled: '1'
related_material:
  record:
  - id: '1805'
    relation: later_version
    status: public
scopus_import: 1
status: public
title: Homological reconstruction and simplification in R3
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2013'
...
---
_id: '2815'
abstract:
- lang: eng
  text: The fact that a sum of isotropic Gaussian kernels can have more modes than
    kernels is surprising. Extra (ghost) modes do not exist in ℝ1 and are generally
    not well studied in higher dimensions. We study a configuration of n+1 Gaussian
    kernels for which there are exactly n+2 modes. We show that all modes lie on a
    finite set of lines, which we call axes, and study the restriction of the Gaussian
    mixture to these axes in order to discover that there are an exponential number
    of critical points in this configuration. Although the existence of ghost modes
    remained unknown due to the difficulty of finding examples in ℝ2, we show that
    the resilience of ghost modes grows like the square root of the dimension. In
    addition, we exhibit finite configurations of isotropic Gaussian kernels with
    superlinearly many modes.
acknowledgement: This research is partially supported by the National Science Foundation
  (NSF) under Grant DBI-0820624, by the European Science Foundation under the Research
  Networking Programme, and the Russian Government Project 11.G34.31.0053.
article_processing_charge: No
article_type: original
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Brittany Terese
  full_name: Fasy, Brittany Terese
  id: F65D502E-E68D-11E9-9252-C644099818F6
  last_name: Fasy
- first_name: Günter
  full_name: Rote, Günter
  last_name: Rote
citation:
  ama: 'Edelsbrunner H, Fasy BT, Rote G. Add isotropic Gaussian kernels at own risk:
    More and more resilient modes in higher dimensions. <i>Discrete &#38; Computational
    Geometry</i>. 2013;49(4):797-822. doi:<a href="https://doi.org/10.1007/s00454-013-9517-x">10.1007/s00454-013-9517-x</a>'
  apa: 'Edelsbrunner, H., Fasy, B. T., &#38; Rote, G. (2013). Add isotropic Gaussian
    kernels at own risk: More and more resilient modes in higher dimensions. <i>Discrete
    &#38; Computational Geometry</i>. Springer. <a href="https://doi.org/10.1007/s00454-013-9517-x">https://doi.org/10.1007/s00454-013-9517-x</a>'
  chicago: 'Edelsbrunner, Herbert, Brittany Terese Fasy, and Günter Rote. “Add Isotropic
    Gaussian Kernels at Own Risk: More and More Resilient Modes in Higher Dimensions.”
    <i>Discrete &#38; Computational Geometry</i>. Springer, 2013. <a href="https://doi.org/10.1007/s00454-013-9517-x">https://doi.org/10.1007/s00454-013-9517-x</a>.'
  ieee: 'H. Edelsbrunner, B. T. Fasy, and G. Rote, “Add isotropic Gaussian kernels
    at own risk: More and more resilient modes in higher dimensions,” <i>Discrete
    &#38; Computational Geometry</i>, vol. 49, no. 4. Springer, pp. 797–822, 2013.'
  ista: 'Edelsbrunner H, Fasy BT, Rote G. 2013. Add isotropic Gaussian kernels at
    own risk: More and more resilient modes in higher dimensions. Discrete &#38; Computational
    Geometry. 49(4), 797–822.'
  mla: 'Edelsbrunner, Herbert, et al. “Add Isotropic Gaussian Kernels at Own Risk:
    More and More Resilient Modes in Higher Dimensions.” <i>Discrete &#38; Computational
    Geometry</i>, vol. 49, no. 4, Springer, 2013, pp. 797–822, doi:<a href="https://doi.org/10.1007/s00454-013-9517-x">10.1007/s00454-013-9517-x</a>.'
  short: H. Edelsbrunner, B.T. Fasy, G. Rote, Discrete &#38; Computational Geometry
    49 (2013) 797–822.
corr_author: '1'
date_created: 2018-12-11T11:59:44Z
date_published: 2013-06-01T00:00:00Z
date_updated: 2026-06-18T18:35:33Z
day: '01'
ddc:
- '500'
department:
- _id: HeEd
doi: 10.1007/s00454-013-9517-x
external_id:
  isi:
  - '000320672400005'
fulldoi: https://doi.org/10.1007/s00454-013-9517-x
intvolume: '        49'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1007/s00454-013-9517-x
month: '06'
oa: 1
oa_version: Published Version
page: 797 - 822
publication: Discrete & Computational Geometry
publication_identifier:
  eissn:
  - 1432-0444
  issn:
  - 0179-5376
publication_status: published
publisher: Springer
publist_id: '3991'
quality_controlled: '1'
related_material:
  record:
  - id: '3134'
    relation: earlier_version
    status: public
scopus_import: '1'
status: public
title: 'Add isotropic Gaussian kernels at own risk: More and more resilient modes
  in higher dimensions'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 49
year: '2013'
...
---
_id: '2822'
abstract:
- lang: eng
  text: Identification of genes that control root system architecture in crop plants
    requires innovations that enable high-throughput and accurate measurements of
    root system architecture through time. We demonstrate the ability of a semiautomated
    3D in vivo imaging and digital phenotyping pipeline to interrogate the quantitative
    genetic basis of root system growth in a rice biparental mapping population, Bala
    x Azucena. We phenotyped &gt;1,400 3D root models and &gt;57,000 2D images for
    a suite of 25 traits that quantified the distribution, shape, extent of exploration,
    and the intrinsic size of root networks at days 12, 14, and 16 of growth in a
    gellan gum medium. From these data we identified 89 quantitative trait loci, some
    of which correspond to those found previously in soil-grown plants, and provide
    evidence for genetic tradeoffs in root growth allocations, such as between the
    extent and thoroughness of exploration. We also developed a multivariate method
    for generating and mapping central root architecture phenotypes and used it to
    identify five major quantitative trait loci (r2 = 24-37%), two of which were not
    identified by our univariate analysis. Our imaging and analytical platform provides
    a means to identify genes with high potential for improving root traits and agronomic
    qualities of crops.
article_processing_charge: No
author:
- first_name: Christopher
  full_name: Topp, Christopher
  last_name: Topp
- first_name: Anjali
  full_name: Iyer Pascuzzi, Anjali
  last_name: Iyer Pascuzzi
- first_name: Jill
  full_name: Anderson, Jill
  last_name: Anderson
- first_name: Cheng
  full_name: Lee, Cheng
  last_name: Lee
- first_name: Paul
  full_name: Zurek, Paul
  last_name: Zurek
- first_name: Olga
  full_name: Symonova, Olga
  id: 3C0C7BC6-F248-11E8-B48F-1D18A9856A87
  last_name: Symonova
  orcid: 0000-0003-2012-9947
- first_name: Ying
  full_name: Zheng, Ying
  last_name: Zheng
- first_name: Alexander
  full_name: Bucksch, Alexander
  last_name: Bucksch
- first_name: Yuriy
  full_name: Mileyko, Yuriy
  last_name: Mileyko
- first_name: Taras
  full_name: Galkovskyi, Taras
  last_name: Galkovskyi
- first_name: Brad
  full_name: Moore, Brad
  last_name: Moore
- first_name: John
  full_name: Harer, John
  last_name: Harer
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Thomas
  full_name: Mitchell Olds, Thomas
  last_name: Mitchell Olds
- first_name: Joshua
  full_name: Weitz, Joshua
  last_name: Weitz
- first_name: Philip
  full_name: Benfey, Philip
  last_name: Benfey
citation:
  ama: Topp C, Iyer Pascuzzi A, Anderson J, et al. 3D phenotyping and quantitative
    trait locus mapping identify core regions of the rice genome controlling root
    architecture. <i>PNAS</i>. 2013;110(18):E1695-E1704. doi:<a href="https://doi.org/10.1073/pnas.1304354110">10.1073/pnas.1304354110</a>
  apa: Topp, C., Iyer Pascuzzi, A., Anderson, J., Lee, C., Zurek, P., Symonova, O.,
    … Benfey, P. (2013). 3D phenotyping and quantitative trait locus mapping identify
    core regions of the rice genome controlling root architecture. <i>PNAS</i>. National
    Academy of Sciences. <a href="https://doi.org/10.1073/pnas.1304354110">https://doi.org/10.1073/pnas.1304354110</a>
  chicago: Topp, Christopher, Anjali Iyer Pascuzzi, Jill Anderson, Cheng Lee, Paul
    Zurek, Olga Symonova, Ying Zheng, et al. “3D Phenotyping and Quantitative Trait
    Locus Mapping Identify Core Regions of the Rice Genome Controlling Root Architecture.”
    <i>PNAS</i>. National Academy of Sciences, 2013. <a href="https://doi.org/10.1073/pnas.1304354110">https://doi.org/10.1073/pnas.1304354110</a>.
  ieee: C. Topp <i>et al.</i>, “3D phenotyping and quantitative trait locus mapping
    identify core regions of the rice genome controlling root architecture,” <i>PNAS</i>,
    vol. 110, no. 18. National Academy of Sciences, pp. E1695–E1704, 2013.
  ista: Topp C, Iyer Pascuzzi A, Anderson J, Lee C, Zurek P, Symonova O, Zheng Y,
    Bucksch A, Mileyko Y, Galkovskyi T, Moore B, Harer J, Edelsbrunner H, Mitchell
    Olds T, Weitz J, Benfey P. 2013. 3D phenotyping and quantitative trait locus mapping
    identify core regions of the rice genome controlling root architecture. PNAS.
    110(18), E1695–E1704.
  mla: Topp, Christopher, et al. “3D Phenotyping and Quantitative Trait Locus Mapping
    Identify Core Regions of the Rice Genome Controlling Root Architecture.” <i>PNAS</i>,
    vol. 110, no. 18, National Academy of Sciences, 2013, pp. E1695–704, doi:<a href="https://doi.org/10.1073/pnas.1304354110">10.1073/pnas.1304354110</a>.
  short: C. Topp, A. Iyer Pascuzzi, J. Anderson, C. Lee, P. Zurek, O. Symonova, Y.
    Zheng, A. Bucksch, Y. Mileyko, T. Galkovskyi, B. Moore, J. Harer, H. Edelsbrunner,
    T. Mitchell Olds, J. Weitz, P. Benfey, PNAS 110 (2013) E1695–E1704.
date_created: 2018-12-11T11:59:47Z
date_published: 2013-04-30T00:00:00Z
date_updated: 2025-09-29T13:57:21Z
day: '30'
department:
- _id: MaJö
- _id: HeEd
doi: 10.1073/pnas.1304354110
external_id:
  isi:
  - '000318682300008'
  pmid:
  - '25673779'
fulldoi: https://doi.org/10.1073/pnas.1304354110
intvolume: '       110'
isi: 1
issue: '18'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4378147/
month: '04'
oa: 1
oa_version: Submitted Version
page: E1695 - E1704
pmid: 1
publication: PNAS
publication_status: published
publisher: National Academy of Sciences
publist_id: '3979'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 3D phenotyping and quantitative trait locus mapping identify core regions of
  the rice genome controlling root architecture
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 110
year: '2013'
...
---
_id: '2843'
abstract:
- lang: eng
  text: 'Mathematical objects can be measured unambiguously, but not so objects from
    our physical world. Even the total length of tubelike shapes has its difficulties.
    We introduce a combination of geometric, probabilistic, and topological methods
    to design a stable length estimate for tube-like shapes; that is: one that is
    insensitive to small shape changes.'
alternative_title:
- LNCS
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Florian
  full_name: Pausinger, Florian
  id: 2A77D7A2-F248-11E8-B48F-1D18A9856A87
  last_name: Pausinger
  orcid: 0000-0002-8379-3768
citation:
  ama: 'Edelsbrunner H, Pausinger F. Stable length estimates of tube-like shapes.
    In: <i>17th IAPR International Conference on Discrete Geometry for Computer Imagery</i>.
    Vol 7749. Springer; 2013:XV-XIX. doi:<a href="https://doi.org/10.1007/978-3-642-37067-0">10.1007/978-3-642-37067-0</a>'
  apa: 'Edelsbrunner, H., &#38; Pausinger, F. (2013). Stable length estimates of tube-like
    shapes. In <i>17th IAPR International Conference on Discrete Geometry for Computer
    Imagery</i> (Vol. 7749, pp. XV–XIX). Seville, Spain: Springer. <a href="https://doi.org/10.1007/978-3-642-37067-0">https://doi.org/10.1007/978-3-642-37067-0</a>'
  chicago: Edelsbrunner, Herbert, and Florian Pausinger. “Stable Length Estimates
    of Tube-like Shapes.” In <i>17th IAPR International Conference on Discrete Geometry
    for Computer Imagery</i>, 7749:XV–XIX. Springer, 2013. <a href="https://doi.org/10.1007/978-3-642-37067-0">https://doi.org/10.1007/978-3-642-37067-0</a>.
  ieee: H. Edelsbrunner and F. Pausinger, “Stable length estimates of tube-like shapes,”
    in <i>17th IAPR International Conference on Discrete Geometry for Computer Imagery</i>,
    Seville, Spain, 2013, vol. 7749, pp. XV–XIX.
  ista: 'Edelsbrunner H, Pausinger F. 2013. Stable length estimates of tube-like shapes.
    17th IAPR International Conference on Discrete Geometry for Computer Imagery.
    DGCI: Discrete Geometry for Computer Imagery, LNCS, vol. 7749, XV–XIX.'
  mla: Edelsbrunner, Herbert, and Florian Pausinger. “Stable Length Estimates of Tube-like
    Shapes.” <i>17th IAPR International Conference on Discrete Geometry for Computer
    Imagery</i>, vol. 7749, Springer, 2013, pp. XV–XIX, doi:<a href="https://doi.org/10.1007/978-3-642-37067-0">10.1007/978-3-642-37067-0</a>.
  short: H. Edelsbrunner, F. Pausinger, in:, 17th IAPR International Conference on
    Discrete Geometry for Computer Imagery, Springer, 2013, pp. XV–XIX.
conference:
  end_date: 2013-03-22
  location: Seville, Spain
  name: 'DGCI: Discrete Geometry for Computer Imagery'
  start_date: 2013-03-20
date_created: 2018-12-11T11:59:53Z
date_published: 2013-02-21T00:00:00Z
date_updated: 2026-04-16T10:09:03Z
day: '21'
department:
- _id: HeEd
doi: 10.1007/978-3-642-37067-0
fulldoi: https://doi.org/10.1007/978-3-642-37067-0
intvolume: '      7749'
language:
- iso: eng
month: '02'
oa_version: None
page: XV - XIX
publication: 17th IAPR International Conference on Discrete Geometry for Computer
  Imagery
publication_status: published
publisher: Springer
publist_id: '3952'
quality_controlled: '1'
related_material:
  record:
  - id: '2255'
    relation: later_version
    status: public
scopus_import: 1
status: public
title: Stable length estimates of tube-like shapes
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 7749
year: '2013'
...
