---
_id: '5558'
abstract:
- lang: eng
text: PhD thesis LaTeX source code
article_processing_charge: No
author:
- first_name: Morten
full_name: Bojsen-Hansen, Morten
id: 439F0C8C-F248-11E8-B48F-1D18A9856A87
last_name: Bojsen-Hansen
orcid: 0000-0002-4417-3224
citation:
ama: Bojsen-Hansen M. Tracking, Correcting and Absorbing Water Surface Waves. 2016.
doi:10.15479/AT:ISTA:48
apa: Bojsen-Hansen, M. (2016). Tracking, Correcting and Absorbing Water Surface
Waves. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:48
chicago: Bojsen-Hansen, Morten. “Tracking, Correcting and Absorbing Water Surface
Waves.” Institute of Science and Technology Austria, 2016. https://doi.org/10.15479/AT:ISTA:48.
ieee: M. Bojsen-Hansen, “Tracking, Correcting and Absorbing Water Surface Waves.”
Institute of Science and Technology Austria, 2016.
ista: Bojsen-Hansen M. 2016. Tracking, Correcting and Absorbing Water Surface Waves,
Institute of Science and Technology Austria, 10.15479/AT:ISTA:48.
mla: Bojsen-Hansen, Morten. Tracking, Correcting and Absorbing Water Surface
Waves. Institute of Science and Technology Austria, 2016, doi:10.15479/AT:ISTA:48.
short: M. Bojsen-Hansen, (2016).
datarep_id: '48'
date_created: 2018-12-12T12:31:31Z
date_published: 2016-09-23T00:00:00Z
date_updated: 2024-02-21T13:50:48Z
day: '23'
ddc:
- '004'
department:
- _id: ChWo
doi: 10.15479/AT:ISTA:48
file:
- access_level: open_access
checksum: 5b1b256ad796fbddb4b7729f5e45e444
content_type: application/x-bzip2
creator: system
date_created: 2018-12-12T13:02:18Z
date_updated: 2020-07-14T12:47:02Z
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file_name: IST-2016-48-v1+1_2016_Bojsen-Hansen_TCaAWSW.tar.bz2
file_size: 55237885
relation: main_file
file_date_updated: 2020-07-14T12:47:02Z
has_accepted_license: '1'
license: https://creativecommons.org/licenses/by/4.0/
month: '09'
oa: 1
oa_version: Published Version
publisher: Institute of Science and Technology Austria
publist_id: '6238'
pubrep_id: '640'
related_material:
record:
- id: '1122'
relation: other
status: public
status: public
title: Tracking, Correcting and Absorbing Water Surface Waves
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: research_data
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2016'
...
---
_id: '1634'
abstract:
- lang: eng
text: Simulating the delightful dynamics of soap films, bubbles, and foams has traditionally
required the use of a fully three-dimensional many-phase Navier-Stokes solver,
even though their visual appearance is completely dominated by the thin liquid
surface. We depart from earlier work on soap bubbles and foams by noting that
their dynamics are naturally described by a Lagrangian vortex sheet model in which
circulation is the primary variable. This leads us to derive a novel circulation-preserving
surface-only discretization of foam dynamics driven by surface tension on a non-manifold
triangle mesh. We represent the surface using a mesh-based multimaterial surface
tracker which supports complex bubble topology changes, and evolve the surface
according to the ambient air flow induced by a scalar circulation field stored
on the mesh. Surface tension forces give rise to a simple update rule for circulation,
even at non-manifold Plateau borders, based on a discrete measure of signed scalar
mean curvature. We further incorporate vertex constraints to enable the interaction
of soap films with wires. The result is a method that is at once simple, robust,
and efficient, yet able to capture an array of soap films behaviors including
foam rearrangement, catenoid collapse, blowing bubbles, and double bubbles being
pulled apart.
article_number: '149'
author:
- first_name: Fang
full_name: Da, Fang
last_name: Da
- first_name: Christopher
full_name: Batty, Christopher
last_name: Batty
- first_name: Christopher J
full_name: Wojtan, Christopher J
id: 3C61F1D2-F248-11E8-B48F-1D18A9856A87
last_name: Wojtan
orcid: 0000-0001-6646-5546
- first_name: Eitan
full_name: Grinspun, Eitan
last_name: Grinspun
citation:
ama: 'Da F, Batty C, Wojtan C, Grinspun E. Double bubbles sans toil and trouble:
discrete circulation-preserving vortex sheets for soap films and foams. In: Vol
34. ACM; 2015. doi:10.1145/2767003'
apa: 'Da, F., Batty, C., Wojtan, C., & Grinspun, E. (2015). Double bubbles sans
toil and trouble: discrete circulation-preserving vortex sheets for soap films
and foams (Vol. 34). Presented at the SIGGRAPH: Special Interest Group on Computer
Graphics and Interactive Techniques, Los Angeles, CA, United States: ACM. https://doi.org/10.1145/2767003'
chicago: 'Da, Fang, Christopher Batty, Chris Wojtan, and Eitan Grinspun. “Double
Bubbles sans Toil and Trouble: Discrete Circulation-Preserving Vortex Sheets for
Soap Films and Foams,” Vol. 34. ACM, 2015. https://doi.org/10.1145/2767003.'
ieee: 'F. Da, C. Batty, C. Wojtan, and E. Grinspun, “Double bubbles sans toil and
trouble: discrete circulation-preserving vortex sheets for soap films and foams,”
presented at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive
Techniques, Los Angeles, CA, United States, 2015, vol. 34, no. 4.'
ista: 'Da F, Batty C, Wojtan C, Grinspun E. 2015. Double bubbles sans toil and trouble:
discrete circulation-preserving vortex sheets for soap films and foams. SIGGRAPH:
Special Interest Group on Computer Graphics and Interactive Techniques vol. 34,
149.'
mla: 'Da, Fang, et al. Double Bubbles sans Toil and Trouble: Discrete Circulation-Preserving
Vortex Sheets for Soap Films and Foams. Vol. 34, no. 4, 149, ACM, 2015, doi:10.1145/2767003.'
short: F. Da, C. Batty, C. Wojtan, E. Grinspun, in:, ACM, 2015.
conference:
end_date: 2015-08-13
location: Los Angeles, CA, United States
name: 'SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques'
start_date: 2015-08-09
date_created: 2018-12-11T11:53:09Z
date_published: 2015-07-27T00:00:00Z
date_updated: 2023-02-23T10:07:42Z
day: '27'
ddc:
- '000'
department:
- _id: ChWo
doi: 10.1145/2767003
ec_funded: 1
file:
- access_level: open_access
checksum: 57b07d78d2d612a8052744b37d4a71fa
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:11:14Z
date_updated: 2020-07-14T12:45:07Z
file_id: '4867'
file_name: IST-2016-608-v1+1_doublebubbles.pdf
file_size: 8973215
relation: main_file
file_date_updated: 2020-07-14T12:45:07Z
has_accepted_license: '1'
intvolume: ' 34'
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Submitted Version
project:
- _id: 2533E772-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '638176'
name: Efficient Simulation of Natural Phenomena at Extremely Large Scales
publication_status: published
publisher: ACM
publist_id: '5521'
pubrep_id: '608'
quality_controlled: '1'
scopus_import: 1
status: public
title: 'Double bubbles sans toil and trouble: discrete circulation-preserving vortex
sheets for soap films and foams'
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 34
year: '2015'
...
---
_id: '1632'
abstract:
- lang: eng
text: "This paper presents a liquid simulation technique that enforces the incompressibility
condition using a stream function solve instead of a pressure projection. Previous
methods have used stream function techniques for the simulation of detailed single-phase
flows, but a formulation for liquid simulation has proved elusive in part due
to the free surface boundary conditions. In this paper, we introduce a stream
function approach to liquid simulations with novel boundary conditions for free
surfaces, solid obstacles, and solid-fluid coupling.\r\n\r\nAlthough our approach
increases the dimension of the linear system necessary to enforce incompressibility,
it provides interesting and surprising benefits. First, the resulting flow is
guaranteed to be divergence-free regardless of the accuracy of the solve. Second,
our free-surface boundary conditions guarantee divergence-free motion even in
the un-simulated air phase, which enables two-phase flow simulation by only computing
a single phase. We implemented this method using a variant of FLIP simulation
which only samples particles within a narrow band of the liquid surface, and we
illustrate the effectiveness of our method for detailed two-phase flow simulations
with complex boundaries, detailed bubble interactions, and two-way solid-fluid
coupling."
acknowledgement: The first author was supported by a JSPS Postdoctoral Fellowship
for Research Abroad. This work was also supported by the ERC projects ERC-2014-StG-637014
realFlow and ERC-2014- StG-638176 BigSplash.
alternative_title:
- ACM Transactions on Graphics
article_number: '53'
author:
- first_name: Ryoichi
full_name: Ando, Ryoichi
last_name: Ando
- first_name: Nils
full_name: Thuerey, Nils
last_name: Thuerey
- first_name: Christopher J
full_name: Wojtan, Christopher J
id: 3C61F1D2-F248-11E8-B48F-1D18A9856A87
last_name: Wojtan
orcid: 0000-0001-6646-5546
citation:
ama: 'Ando R, Thuerey N, Wojtan C. A stream function solver for liquid simulations.
In: Vol 34. ACM; 2015. doi:10.1145/2766935'
apa: 'Ando, R., Thuerey, N., & Wojtan, C. (2015). A stream function solver for
liquid simulations (Vol. 34). Presented at the SIGGRAPH: Special Interest Group
on Computer Graphics and Interactive Techniques, Los Angeles, CA, USA: ACM. https://doi.org/10.1145/2766935'
chicago: Ando, Ryoichi, Nils Thuerey, and Chris Wojtan. “A Stream Function Solver
for Liquid Simulations,” Vol. 34. ACM, 2015. https://doi.org/10.1145/2766935.
ieee: 'R. Ando, N. Thuerey, and C. Wojtan, “A stream function solver for liquid
simulations,” presented at the SIGGRAPH: Special Interest Group on Computer Graphics
and Interactive Techniques, Los Angeles, CA, USA, 2015, vol. 34, no. 4.'
ista: 'Ando R, Thuerey N, Wojtan C. 2015. A stream function solver for liquid simulations.
SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques,
ACM Transactions on Graphics, vol. 34, 53.'
mla: Ando, Ryoichi, et al. A Stream Function Solver for Liquid Simulations.
Vol. 34, no. 4, 53, ACM, 2015, doi:10.1145/2766935.
short: R. Ando, N. Thuerey, C. Wojtan, in:, ACM, 2015.
conference:
end_date: 2015-08-13
location: Los Angeles, CA, USA
name: 'SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques'
start_date: 2015-08-09
date_created: 2018-12-11T11:53:09Z
date_published: 2015-07-27T00:00:00Z
date_updated: 2023-02-23T10:07:37Z
day: '27'
ddc:
- '000'
department:
- _id: ChWo
doi: 10.1145/2766935
file:
- access_level: open_access
checksum: 7a9afdfaba9209157ce19376e15bc90b
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:11:52Z
date_updated: 2020-07-14T12:45:07Z
file_id: '4909'
file_name: IST-2016-610-v1+1_vecpotential.pdf
file_size: 21831121
relation: main_file
file_date_updated: 2020-07-14T12:45:07Z
has_accepted_license: '1'
intvolume: ' 34'
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Submitted Version
publication_status: published
publisher: ACM
publist_id: '5523'
pubrep_id: '610'
quality_controlled: '1'
scopus_import: 1
status: public
title: A stream function solver for liquid simulations
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 34
year: '2015'
...
---
_id: '1630'
abstract:
- lang: eng
text: We present a method to learn and propagate shape placements in 2D polygonal
scenes from a few examples provided by a user. The placement of a shape is modeled
as an oriented bounding box. Simple geometric relationships between this bounding
box and nearby scene polygons define a feature set for the placement. The feature
sets of all example placements are then used to learn a probabilistic model over
all possible placements and scenes. With this model, we can generate a new set
of placements with similar geometric relationships in any given scene. We introduce
extensions that enable propagation and generation of shapes in 3D scenes, as
well as the application of a learned modeling session to large scenes without
additional user interaction. These concepts allow us to generate complex scenes
with thousands of objects with relatively little user interaction.
acknowledgement: This publication is based upon work supported by the KAUST Office
of Competitive Research Funds (OCRF) under Award No. 62140401, the KAUST Visual
Computing Center and the Austrian Science Fund (FWF) projects DEEP PICTURES (no.
P24352-N23) and Data-Driven Procedural Modeling of Interiors (no. P24600-N23).
article_number: '108'
author:
- first_name: Paul
full_name: Guerrero, Paul
last_name: Guerrero
- first_name: Stefan
full_name: Jeschke, Stefan
id: 44D6411A-F248-11E8-B48F-1D18A9856A87
last_name: Jeschke
- first_name: Michael
full_name: Wimmer, Michael
last_name: Wimmer
- first_name: Peter
full_name: Wonka, Peter
last_name: Wonka
citation:
ama: 'Guerrero P, Jeschke S, Wimmer M, Wonka P. Learning shape placements by example.
In: Vol 34. ACM; 2015. doi:10.1145/2766933'
apa: 'Guerrero, P., Jeschke, S., Wimmer, M., & Wonka, P. (2015). Learning shape
placements by example (Vol. 34). Presented at the SIGGRAPH: Special Interest Group
on Computer Graphics and Interactive Techniques, Los Angeles, CA, United States:
ACM. https://doi.org/10.1145/2766933'
chicago: Guerrero, Paul, Stefan Jeschke, Michael Wimmer, and Peter Wonka. “Learning
Shape Placements by Example,” Vol. 34. ACM, 2015. https://doi.org/10.1145/2766933.
ieee: 'P. Guerrero, S. Jeschke, M. Wimmer, and P. Wonka, “Learning shape placements
by example,” presented at the SIGGRAPH: Special Interest Group on Computer Graphics
and Interactive Techniques, Los Angeles, CA, United States, 2015, vol. 34, no.
4.'
ista: 'Guerrero P, Jeschke S, Wimmer M, Wonka P. 2015. Learning shape placements
by example. SIGGRAPH: Special Interest Group on Computer Graphics and Interactive
Techniques vol. 34, 108.'
mla: Guerrero, Paul, et al. Learning Shape Placements by Example. Vol. 34,
no. 4, 108, ACM, 2015, doi:10.1145/2766933.
short: P. Guerrero, S. Jeschke, M. Wimmer, P. Wonka, in:, ACM, 2015.
conference:
end_date: 2015-08-13
location: Los Angeles, CA, United States
name: 'SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques'
start_date: 2015-08-09
date_created: 2018-12-11T11:53:08Z
date_published: 2015-07-27T00:00:00Z
date_updated: 2021-01-12T06:52:07Z
day: '27'
ddc:
- '000'
department:
- _id: ChWo
doi: 10.1145/2766933
file:
- access_level: open_access
checksum: 8b05a51e372c9b0b5af9a00098a9538b
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:07:49Z
date_updated: 2020-07-14T12:45:07Z
file_id: '4647'
file_name: IST-2016-576-v1+1_guerrero-2015-lsp-paper.pdf
file_size: 11902290
relation: main_file
file_date_updated: 2020-07-14T12:45:07Z
has_accepted_license: '1'
intvolume: ' 34'
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Submitted Version
project:
- _id: 25357BD2-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P 24352-N23
name: 'Deep Pictures: Creating Visual and Haptic Vector Images'
publication_status: published
publisher: ACM
publist_id: '5525'
pubrep_id: '576'
quality_controlled: '1'
scopus_import: 1
status: public
title: Learning shape placements by example
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 34
year: '2015'
...
---
_id: '1735'
abstract:
- lang: eng
text: This work presents a method for efficiently simplifying the pressure projection
step in a liquid simulation. We first devise a straightforward dimension reduction
technique that dramatically reduces the cost of solving the pressure projection.
Next, we introduce a novel change of basis that satisfies free-surface boundary
conditions exactly, regardless of the accuracy of the pressure solve. When combined,
these ideas greatly reduce the computational complexity of the pressure solve
without compromising free surface boundary conditions at the highest level of
detail. Our techniques are easy to parallelize, and they effectively eliminate
the computational bottleneck for large liquid simulations.
acknowledgement: The first author was supported by a JSPS Postdoctoral Fellowship
for Research Abroad
author:
- first_name: Ryoichi
full_name: Ando, Ryoichi
last_name: Ando
- first_name: Nils
full_name: Thürey, Nils
last_name: Thürey
- first_name: Christopher J
full_name: Wojtan, Christopher J
id: 3C61F1D2-F248-11E8-B48F-1D18A9856A87
last_name: Wojtan
orcid: 0000-0001-6646-5546
citation:
ama: Ando R, Thürey N, Wojtan C. A dimension-reduced pressure solver for liquid
simulations. Computer Graphics Forum. 2015;34(2):473-480. doi:10.1111/cgf.12576
apa: Ando, R., Thürey, N., & Wojtan, C. (2015). A dimension-reduced pressure
solver for liquid simulations. Computer Graphics Forum. Wiley. https://doi.org/10.1111/cgf.12576
chicago: Ando, Ryoichi, Nils Thürey, and Chris Wojtan. “A Dimension-Reduced Pressure
Solver for Liquid Simulations.” Computer Graphics Forum. Wiley, 2015. https://doi.org/10.1111/cgf.12576.
ieee: R. Ando, N. Thürey, and C. Wojtan, “A dimension-reduced pressure solver for
liquid simulations,” Computer Graphics Forum, vol. 34, no. 2. Wiley, pp.
473–480, 2015.
ista: Ando R, Thürey N, Wojtan C. 2015. A dimension-reduced pressure solver for
liquid simulations. Computer Graphics Forum. 34(2), 473–480.
mla: Ando, Ryoichi, et al. “A Dimension-Reduced Pressure Solver for Liquid Simulations.”
Computer Graphics Forum, vol. 34, no. 2, Wiley, 2015, pp. 473–80, doi:10.1111/cgf.12576.
short: R. Ando, N. Thürey, C. Wojtan, Computer Graphics Forum 34 (2015) 473–480.
date_created: 2018-12-11T11:53:44Z
date_published: 2015-05-01T00:00:00Z
date_updated: 2023-02-23T10:12:11Z
day: '01'
ddc:
- '000'
department:
- _id: ChWo
doi: 10.1111/cgf.12576
file:
- access_level: open_access
checksum: 590752bf977855b337a80f78a9bc2404
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:16:30Z
date_updated: 2020-07-14T12:45:15Z
file_id: '5218'
file_name: IST-2016-607-v1+1_coarsegrid.pdf
file_size: 6312352
relation: main_file
file_date_updated: 2020-07-14T12:45:15Z
has_accepted_license: '1'
intvolume: ' 34'
issue: '2'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Submitted Version
page: 473 - 480
publication: Computer Graphics Forum
publication_status: published
publisher: Wiley
publist_id: '5389'
pubrep_id: '607'
quality_controlled: '1'
scopus_import: 1
status: public
title: A dimension-reduced pressure solver for liquid simulations
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 34
year: '2015'
...