---
_id: '1099'
abstract:
- lang: eng
  text: We present FlexMolds, a novel computational approach to automatically design
    flexible, reusable molds that, once 3D printed, allow us to physically fabricate,
    by means of liquid casting, multiple copies of complex shapes with rich surface
    details and complex topology. The approach to design such flexible molds is based
    on a greedy bottom-up search of possible cuts over an object, evaluating for each
    possible cut the feasibility of the resulting mold. We use a dynamic simulation
    approach to evaluate candidate molds, providing a heuristic to generate forces
    that are able to open, detach, and remove a complex mold from the object it surrounds.
    We have tested the approach with a number of objects with nontrivial shapes and
    topologies.
acknowledgement: "The armadillo, bunny and dragon models are courtesy of the Stanford
  \ 3D  Scanning  Repository.   The  bimba,  fertility  and  elephant models are courtesy
  of the AIM@SHAPE Shape Repository.  \r\nThis project has received funding from the
  European Union’s Horizon 2020  research  and  innovation  programme  under  grant
  \ agreement\r\nNo. 645599."
alternative_title:
- ACM Transactions on Graphics
article_number: '223'
article_processing_charge: No
author:
- first_name: Luigi
  full_name: Malomo, Luigi
  last_name: Malomo
- first_name: Nico
  full_name: Pietroni, Nico
  last_name: Pietroni
- first_name: Bernd
  full_name: Bickel, Bernd
  id: 49876194-F248-11E8-B48F-1D18A9856A87
  last_name: Bickel
  orcid: 0000-0001-6511-9385
- first_name: Paolo
  full_name: Cignoni, Paolo
  last_name: Cignoni
citation:
  ama: 'Malomo L, Pietroni N, Bickel B, Cignoni P. FlexMolds: Automatic design of
    flexible shells for molding. In: Vol 35. ACM; 2016. doi:<a href="https://doi.org/10.1145/2980179.2982397">10.1145/2980179.2982397</a>'
  apa: 'Malomo, L., Pietroni, N., Bickel, B., &#38; Cignoni, P. (2016). FlexMolds:
    Automatic design of flexible shells for molding (Vol. 35). Presented at the SIGGRAPH
    Asia: Conference and Exhibition on Computer Graphics and Interactive Techniques
    in Asia, Macao, China: ACM. <a href="https://doi.org/10.1145/2980179.2982397">https://doi.org/10.1145/2980179.2982397</a>'
  chicago: 'Malomo, Luigi, Nico Pietroni, Bernd Bickel, and Paolo Cignoni. “FlexMolds:
    Automatic Design of Flexible Shells for Molding,” Vol. 35. ACM, 2016. <a href="https://doi.org/10.1145/2980179.2982397">https://doi.org/10.1145/2980179.2982397</a>.'
  ieee: 'L. Malomo, N. Pietroni, B. Bickel, and P. Cignoni, “FlexMolds: Automatic
    design of flexible shells for molding,” presented at the SIGGRAPH Asia: Conference
    and Exhibition on Computer Graphics and Interactive Techniques in Asia, Macao,
    China, 2016, vol. 35, no. 6.'
  ista: 'Malomo L, Pietroni N, Bickel B, Cignoni P. 2016. FlexMolds: Automatic design
    of flexible shells for molding. SIGGRAPH Asia: Conference and Exhibition on Computer
    Graphics and Interactive Techniques in Asia, ACM Transactions on Graphics, vol.
    35, 223.'
  mla: 'Malomo, Luigi, et al. <i>FlexMolds: Automatic Design of Flexible Shells for
    Molding</i>. Vol. 35, no. 6, 223, ACM, 2016, doi:<a href="https://doi.org/10.1145/2980179.2982397">10.1145/2980179.2982397</a>.'
  short: L. Malomo, N. Pietroni, B. Bickel, P. Cignoni, in:, ACM, 2016.
conference:
  end_date: 2016-12-08
  location: Macao, China
  name: 'SIGGRAPH Asia: Conference and Exhibition on Computer Graphics and Interactive
    Techniques in Asia'
  start_date: 2016-12-05
date_created: 2018-12-11T11:50:08Z
date_published: 2016-11-01T00:00:00Z
date_updated: 2025-09-22T14:16:02Z
day: '01'
ddc:
- '000'
- '005'
department:
- _id: BeBi
doi: 10.1145/2980179.2982397
ec_funded: 1
external_id:
  isi:
  - '000388446200065'
file:
- access_level: open_access
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:12:01Z
  date_updated: 2018-12-12T10:12:01Z
  file_id: '4918'
  file_name: IST-2017-760-v1+1_flexmolds.pdf
  file_size: 11122029
  relation: main_file
file_date_updated: 2018-12-12T10:12:01Z
has_accepted_license: '1'
intvolume: '        35'
isi: 1
issue: '6'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Submitted Version
project:
- _id: 25082902-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '645599'
  name: Soft-bodied intelligence for Manipulation
publication_status: published
publisher: ACM
publist_id: '6276'
pubrep_id: '760'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'FlexMolds: Automatic design of flexible shells for molding'
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 35
year: '2016'
...
---
_id: '1520'
abstract:
- lang: eng
  text: Creating mechanical automata that can walk in stable and pleasing manners
    is a challenging task that requires both skill and expertise. We propose to use
    computational design to offset the technical difficulties of this process. A simple
    drag-and-drop interface allows casual users to create personalized walking toys
    from a library of pre-defined template mechanisms. Provided with this input, our
    method leverages physical simulation and evolutionary optimization to refine the
    mechanical designs such that the resulting toys are able to walk. The optimization
    process is guided by an intuitive set of objectives that measure the quality of
    the walking motions. We demonstrate our approach on a set of simulated mechanical
    toys with different numbers of legs and various distinct gaits. Two fabricated
    prototypes showcase the feasibility of our designs.
author:
- first_name: Gaurav
  full_name: Bharaj, Gaurav
  last_name: Bharaj
- first_name: Stelian
  full_name: Coros, Stelian
  last_name: Coros
- first_name: Bernhard
  full_name: Thomaszewski, Bernhard
  last_name: Thomaszewski
- first_name: James
  full_name: Tompkin, James
  last_name: Tompkin
- first_name: Bernd
  full_name: Bickel, Bernd
  id: 49876194-F248-11E8-B48F-1D18A9856A87
  last_name: Bickel
  orcid: 0000-0001-6511-9385
- first_name: Hanspeter
  full_name: Pfister, Hanspeter
  last_name: Pfister
citation:
  ama: 'Bharaj G, Coros S, Thomaszewski B, Tompkin J, Bickel B, Pfister H. Computational
    design of walking automata. In: ACM; 2015:93-100. doi:<a href="https://doi.org/10.1145/2786784.2786803">10.1145/2786784.2786803</a>'
  apa: 'Bharaj, G., Coros, S., Thomaszewski, B., Tompkin, J., Bickel, B., &#38; Pfister,
    H. (2015). Computational design of walking automata (pp. 93–100). Presented at
    the SCA: ACM SIGGRAPH/Eurographics Symposium on Computer animation, Los Angeles,
    CA, United States: ACM. <a href="https://doi.org/10.1145/2786784.2786803">https://doi.org/10.1145/2786784.2786803</a>'
  chicago: Bharaj, Gaurav, Stelian Coros, Bernhard Thomaszewski, James Tompkin, Bernd
    Bickel, and Hanspeter Pfister. “Computational Design of Walking Automata,” 93–100.
    ACM, 2015. <a href="https://doi.org/10.1145/2786784.2786803">https://doi.org/10.1145/2786784.2786803</a>.
  ieee: 'G. Bharaj, S. Coros, B. Thomaszewski, J. Tompkin, B. Bickel, and H. Pfister,
    “Computational design of walking automata,” presented at the SCA: ACM SIGGRAPH/Eurographics
    Symposium on Computer animation, Los Angeles, CA, United States, 2015, pp. 93–100.'
  ista: 'Bharaj G, Coros S, Thomaszewski B, Tompkin J, Bickel B, Pfister H. 2015.
    Computational design of walking automata. SCA: ACM SIGGRAPH/Eurographics Symposium
    on Computer animation, 93–100.'
  mla: Bharaj, Gaurav, et al. <i>Computational Design of Walking Automata</i>. ACM,
    2015, pp. 93–100, doi:<a href="https://doi.org/10.1145/2786784.2786803">10.1145/2786784.2786803</a>.
  short: G. Bharaj, S. Coros, B. Thomaszewski, J. Tompkin, B. Bickel, H. Pfister,
    in:, ACM, 2015, pp. 93–100.
conference:
  end_date: 2015-08-09
  location: Los Angeles, CA, United States
  name: 'SCA: ACM SIGGRAPH/Eurographics Symposium on Computer animation'
  start_date: 2015-08-07
date_created: 2018-12-11T11:52:30Z
date_published: 2015-08-01T00:00:00Z
date_updated: 2021-01-12T06:51:21Z
day: '01'
department:
- _id: BeBi
doi: 10.1145/2786784.2786803
language:
- iso: eng
month: '08'
oa_version: None
page: 93 - 100
publication_identifier:
  isbn:
  - 978-1-4503-3496-9
publication_status: published
publisher: ACM
publist_id: '5655'
quality_controlled: '1'
scopus_import: 1
status: public
title: Computational design of walking automata
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2015'
...
---
_id: '1625'
abstract:
- lang: eng
  text: In recent years we have seen numerous improvements on 3D scanning and tracking
    of human faces, greatly advancing the creation of digital doubles for film and
    video games. However, despite the high-resolution quality of the reconstruction
    approaches available, current methods are unable to capture one of the most important
    regions of the face - the eye region. In this work we present the first method
    for detailed spatio-temporal reconstruction of eyelids. Tracking and reconstructing
    eyelids is extremely challenging, as this region exhibits very complex and unique
    skin deformation where skin is folded under while opening the eye. Furthermore,
    eyelids are often only partially visible and obstructed due to selfocclusion and
    eyelashes. Our approach is to combine a geometric deformation model with image
    data, leveraging multi-view stereo, optical flow, contour tracking and wrinkle
    detection from local skin appearance. Our deformation model serves as a prior
    that enables reconstruction of eyelids even under strong self-occlusions caused
    by rolling and folding skin as the eye opens and closes. The output is a person-specific,
    time-varying eyelid reconstruction with anatomically plausible deformations. Our
    high-resolution detailed eyelids couple naturally with current facial performance
    capture approaches. As a result, our method can largely increase the fidelity
    of facial capture and the creation of digital doubles.
article_number: '44'
article_processing_charge: No
author:
- first_name: Amit
  full_name: Bermano, Amit
  last_name: Bermano
- first_name: Thabo
  full_name: Beeler, Thabo
  last_name: Beeler
- first_name: Yeara
  full_name: Kozlov, Yeara
  last_name: Kozlov
- first_name: Derek
  full_name: Bradley, Derek
  last_name: Bradley
- first_name: Bernd
  full_name: Bickel, Bernd
  id: 49876194-F248-11E8-B48F-1D18A9856A87
  last_name: Bickel
  orcid: 0000-0001-6511-9385
- first_name: Markus
  full_name: Gross, Markus
  last_name: Gross
citation:
  ama: 'Bermano A, Beeler T, Kozlov Y, Bradley D, Bickel B, Gross M. Detailed spatio-temporal
    reconstruction of eyelids. In: Vol 34. ACM; 2015. doi:<a href="https://doi.org/10.1145/2766924">10.1145/2766924</a>'
  apa: 'Bermano, A., Beeler, T., Kozlov, Y., Bradley, D., Bickel, B., &#38; Gross,
    M. (2015). Detailed spatio-temporal reconstruction of eyelids (Vol. 34). Presented
    at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques,
    Los Angeles, CA, United States: ACM. <a href="https://doi.org/10.1145/2766924">https://doi.org/10.1145/2766924</a>'
  chicago: Bermano, Amit, Thabo Beeler, Yeara Kozlov, Derek Bradley, Bernd Bickel,
    and Markus Gross. “Detailed Spatio-Temporal Reconstruction of Eyelids,” Vol. 34.
    ACM, 2015. <a href="https://doi.org/10.1145/2766924">https://doi.org/10.1145/2766924</a>.
  ieee: 'A. Bermano, T. Beeler, Y. Kozlov, D. Bradley, B. Bickel, and M. Gross, “Detailed
    spatio-temporal reconstruction of eyelids,” presented at the SIGGRAPH: Special
    Interest Group on Computer Graphics and Interactive Techniques, Los Angeles, CA,
    United States, 2015, vol. 34, no. 4.'
  ista: 'Bermano A, Beeler T, Kozlov Y, Bradley D, Bickel B, Gross M. 2015. Detailed
    spatio-temporal reconstruction of eyelids. SIGGRAPH: Special Interest Group on
    Computer Graphics and Interactive Techniques vol. 34, 44.'
  mla: Bermano, Amit, et al. <i>Detailed Spatio-Temporal Reconstruction of Eyelids</i>.
    Vol. 34, no. 4, 44, ACM, 2015, doi:<a href="https://doi.org/10.1145/2766924">10.1145/2766924</a>.
  short: A. Bermano, T. Beeler, Y. Kozlov, D. Bradley, B. Bickel, M. Gross, 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: 2018-12-11T11:53:06Z
date_published: 2015-07-27T00:00:00Z
date_updated: 2025-09-23T08:25:37Z
day: '27'
department:
- _id: BeBi
doi: 10.1145/2766924
external_id:
  isi:
  - '000358786600010'
intvolume: '        34'
isi: 1
issue: '4'
language:
- iso: eng
month: '07'
oa_version: None
publication_status: published
publisher: ACM
publist_id: '5535'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Detailed spatio-temporal reconstruction of eyelids
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 34
year: '2015'
...
---
_id: '1626'
abstract:
- lang: eng
  text: This paper introduces &quot;OmniAD,&quot; a novel data-driven pipeline to
    model and acquire the aerodynamics of three-dimensional rigid objects. Traditionally,
    aerodynamics are examined through elaborate wind tunnel experiments or expensive
    fluid dynamics computations, and are only measured for a small number of discrete
    wind directions. OmniAD allows the evaluation of aerodynamic forces, such as drag
    and lift, for any incoming wind direction using a novel representation based on
    spherical harmonics. Our datadriven technique acquires the aerodynamic properties
    of an object simply by capturing its falling motion using a single camera. Once
    model parameters are estimated, OmniAD enables realistic realtime simulation of
    rigid bodies, such as the tumbling and gliding of leaves, without simulating the
    surrounding air. In addition, we propose an intuitive user interface based on
    OmniAD to interactively design three-dimensional kites that actually fly. Various
    nontraditional kites were designed to demonstrate the physical validity of our
    model.
alternative_title:
- ACM Transactions on Graphics
article_number: '113'
article_processing_charge: No
author:
- first_name: Tobias
  full_name: Martin, Tobias
  last_name: Martin
- first_name: Nobuyuki
  full_name: Umetani, Nobuyuki
  last_name: Umetani
- first_name: Bernd
  full_name: Bickel, Bernd
  id: 49876194-F248-11E8-B48F-1D18A9856A87
  last_name: Bickel
  orcid: 0000-0001-6511-9385
citation:
  ama: 'Martin T, Umetani N, Bickel B. OmniAD: Data-driven omni-directional aerodynamics.
    In: Vol 34. ACM; 2015. doi:<a href="https://doi.org/10.1145/2766919">10.1145/2766919</a>'
  apa: 'Martin, T., Umetani, N., &#38; Bickel, B. (2015). OmniAD: Data-driven omni-directional
    aerodynamics (Vol. 34). Presented at the SIGGRAPH: Special Interest Group on Computer
    Graphics and Interactive Techniques, Los Angeles, CA, United States: ACM. <a href="https://doi.org/10.1145/2766919">https://doi.org/10.1145/2766919</a>'
  chicago: 'Martin, Tobias, Nobuyuki Umetani, and Bernd Bickel. “OmniAD: Data-Driven
    Omni-Directional Aerodynamics,” Vol. 34. ACM, 2015. <a href="https://doi.org/10.1145/2766919">https://doi.org/10.1145/2766919</a>.'
  ieee: 'T. Martin, N. Umetani, and B. Bickel, “OmniAD: Data-driven omni-directional
    aerodynamics,” presented at the SIGGRAPH: Special Interest Group on Computer Graphics
    and Interactive Techniques, Los Angeles, CA, United States, 2015, vol. 34, no.
    4.'
  ista: 'Martin T, Umetani N, Bickel B. 2015. OmniAD: Data-driven omni-directional
    aerodynamics. SIGGRAPH: Special Interest Group on Computer Graphics and Interactive
    Techniques, ACM Transactions on Graphics, vol. 34, 113.'
  mla: 'Martin, Tobias, et al. <i>OmniAD: Data-Driven Omni-Directional Aerodynamics</i>.
    Vol. 34, no. 4, 113, ACM, 2015, doi:<a href="https://doi.org/10.1145/2766919">10.1145/2766919</a>.'
  short: T. Martin, N. Umetani, B. Bickel, 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: 2018-12-11T11:53:06Z
date_published: 2015-07-27T00:00:00Z
date_updated: 2025-09-23T09:42:49Z
day: '27'
department:
- _id: BeBi
doi: 10.1145/2766919
external_id:
  isi:
  - '000358786600079'
intvolume: '        34'
isi: 1
issue: '4'
language:
- iso: eng
month: '07'
oa_version: None
publication_status: published
publisher: ACM
publist_id: '5532'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'OmniAD: Data-driven omni-directional aerodynamics'
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 34
year: '2015'
...
---
_id: '1627'
abstract:
- lang: eng
  text: We present a computational tool for fabrication-oriented design of flexible
    rod meshes. Given a deformable surface and a set of deformed poses as input, our
    method automatically computes a printable rod mesh that, once manufactured, closely
    matches the input poses under the same boundary conditions. The core of our method
    is formed by an optimization scheme that adjusts the cross-sectional profiles
    of the rods and their rest centerline in order to best approximate the target
    deformations. This approach allows us to locally control the bending and stretching
    resistance of the surface with a single material, yielding high design flexibility
    and low fabrication cost.
acknowledgement: This work was supported in part by grants from the Spanish Ministry
  of Economy (TIN2012-35840), and the European Research Council (ERC Starting Grant
  no. 280135 Animetrics).
article_number: '138'
article_processing_charge: No
author:
- first_name: Jesús
  full_name: Pérez, Jesús
  last_name: Pérez
- first_name: Bernhard
  full_name: Thomaszewski, Bernhard
  last_name: Thomaszewski
- first_name: Stelian
  full_name: Coros, Stelian
  last_name: Coros
- first_name: Bernd
  full_name: Bickel, Bernd
  id: 49876194-F248-11E8-B48F-1D18A9856A87
  last_name: Bickel
  orcid: 0000-0001-6511-9385
- first_name: José
  full_name: Canabal, José
  last_name: Canabal
- first_name: Robert
  full_name: Sumner, Robert
  last_name: Sumner
- first_name: Miguel
  full_name: Otaduy, Miguel
  last_name: Otaduy
citation:
  ama: 'Pérez J, Thomaszewski B, Coros S, et al. Design and fabrication of flexible
    rod meshes. In: Vol 34. ACM; 2015. doi:<a href="https://doi.org/10.1145/2766998">10.1145/2766998</a>'
  apa: 'Pérez, J., Thomaszewski, B., Coros, S., Bickel, B., Canabal, J., Sumner, R.,
    &#38; Otaduy, M. (2015). Design and fabrication of flexible rod meshes (Vol. 34).
    Presented at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive
    Techniques, Los Angeles, CA, United States: ACM. <a href="https://doi.org/10.1145/2766998">https://doi.org/10.1145/2766998</a>'
  chicago: Pérez, Jesús, Bernhard Thomaszewski, Stelian Coros, Bernd Bickel, José
    Canabal, Robert Sumner, and Miguel Otaduy. “Design and Fabrication of Flexible
    Rod Meshes,” Vol. 34. ACM, 2015. <a href="https://doi.org/10.1145/2766998">https://doi.org/10.1145/2766998</a>.
  ieee: 'J. Pérez <i>et al.</i>, “Design and fabrication of flexible rod meshes,”
    presented at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive
    Techniques, Los Angeles, CA, United States, 2015, vol. 34, no. 4.'
  ista: 'Pérez J, Thomaszewski B, Coros S, Bickel B, Canabal J, Sumner R, Otaduy M.
    2015. Design and fabrication of flexible rod meshes. SIGGRAPH: Special Interest
    Group on Computer Graphics and Interactive Techniques vol. 34, 138.'
  mla: Pérez, Jesús, et al. <i>Design and Fabrication of Flexible Rod Meshes</i>.
    Vol. 34, no. 4, 138, ACM, 2015, doi:<a href="https://doi.org/10.1145/2766998">10.1145/2766998</a>.
  short: J. Pérez, B. Thomaszewski, S. Coros, B. Bickel, J. Canabal, R. Sumner, M.
    Otaduy, 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: 2018-12-11T11:53:07Z
date_published: 2015-07-27T00:00:00Z
date_updated: 2025-09-23T08:24:55Z
day: '27'
department:
- _id: BeBi
doi: 10.1145/2766998
external_id:
  isi:
  - '000358786600104'
intvolume: '        34'
isi: 1
issue: '4'
language:
- iso: eng
month: '07'
oa_version: None
publication_status: published
publisher: ACM
publist_id: '5530'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Design and fabrication of flexible rod meshes
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 34
year: '2015'
...
---
_id: '1628'
abstract:
- lang: eng
  text: We propose a method for fabricating deformable objects with spatially varying
    elasticity using 3D printing. Using a single, relatively stiff printer material,
    our method designs an assembly of smallscale microstructures that have the effect
    of a softer material at the object scale, with properties depending on the microstructure
    used in each part of the object. We build on work in the area of metamaterials,
    using numerical optimization to design tiled microstructures with desired properties,
    but with the key difference that our method designs families of related structures
    that can be interpolated to smoothly vary the material properties over a wide
    range. To create an object with spatially varying elastic properties, we tile
    the object's interior with microstructures drawn from these families, generating
    a different microstructure for each cell using an efficient algorithm to select
    compatible structures for neighboring cells. We show results computed for both
    2D and 3D objects, validating several 2D and 3D printed structures using standard
    material tests as well as demonstrating various example applications.
article_number: '136'
article_processing_charge: No
author:
- first_name: Christian
  full_name: Schumacher, Christian
  last_name: Schumacher
- first_name: Bernd
  full_name: Bickel, Bernd
  id: 49876194-F248-11E8-B48F-1D18A9856A87
  last_name: Bickel
  orcid: 0000-0001-6511-9385
- first_name: Jan
  full_name: Rys, Jan
  last_name: Rys
- first_name: Steve
  full_name: Marschner, Steve
  last_name: Marschner
- first_name: Chiara
  full_name: Daraio, Chiara
  last_name: Daraio
- first_name: Markus
  full_name: Gross, Markus
  last_name: Gross
citation:
  ama: 'Schumacher C, Bickel B, Rys J, Marschner S, Daraio C, Gross M. Microstructures
    to control elasticity in 3D printing. In: Vol 34. ACM; 2015. doi:<a href="https://doi.org/10.1145/2766926">10.1145/2766926</a>'
  apa: 'Schumacher, C., Bickel, B., Rys, J., Marschner, S., Daraio, C., &#38; Gross,
    M. (2015). Microstructures to control elasticity in 3D printing (Vol. 34). Presented
    at the SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques,
    Los Angeles, CA, USA: ACM. <a href="https://doi.org/10.1145/2766926">https://doi.org/10.1145/2766926</a>'
  chicago: Schumacher, Christian, Bernd Bickel, Jan Rys, Steve Marschner, Chiara Daraio,
    and Markus Gross. “Microstructures to Control Elasticity in 3D Printing,” Vol.
    34. ACM, 2015. <a href="https://doi.org/10.1145/2766926">https://doi.org/10.1145/2766926</a>.
  ieee: 'C. Schumacher, B. Bickel, J. Rys, S. Marschner, C. Daraio, and M. Gross,
    “Microstructures to control elasticity in 3D printing,” presented at the SIGGRAPH:
    Special Interest Group on Computer Graphics and Interactive Techniques, Los Angeles,
    CA, USA, 2015, vol. 34, no. 4.'
  ista: 'Schumacher C, Bickel B, Rys J, Marschner S, Daraio C, Gross M. 2015. Microstructures
    to control elasticity in 3D printing. SIGGRAPH: Special Interest Group on Computer
    Graphics and Interactive Techniques vol. 34, 136.'
  mla: Schumacher, Christian, et al. <i>Microstructures to Control Elasticity in 3D
    Printing</i>. Vol. 34, no. 4, 136, ACM, 2015, doi:<a href="https://doi.org/10.1145/2766926">10.1145/2766926</a>.
  short: C. Schumacher, B. Bickel, J. Rys, S. Marschner, C. Daraio, M. Gross, 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: 2018-12-11T11:53:07Z
date_published: 2015-08-01T00:00:00Z
date_updated: 2025-09-23T09:34:10Z
day: '01'
department:
- _id: BeBi
doi: 10.1145/2766926
external_id:
  isi:
  - '000358786600102'
intvolume: '        34'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1145/2766926
month: '08'
oa: 1
oa_version: Published Version
publication_status: published
publisher: ACM
publist_id: '5529'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Microstructures to control elasticity in 3D printing
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 34
year: '2015'
...
---
_id: '1734'
abstract:
- lang: eng
  text: Facial appearance capture is now firmly established within academic research
    and used extensively across various application domains, perhaps most prominently
    in the entertainment industry through the design of virtual characters in video
    games and films. While significant progress has occurred over the last two decades,
    no single survey currently exists that discusses the similarities, differences,
    and practical considerations of the available appearance capture techniques as
    applied to human faces. A central difficulty of facial appearance capture is the
    way light interacts with skin-which has a complex multi-layered structure-and
    the interactions that occur below the skin surface can, by definition, only be
    observed indirectly. In this report, we distinguish between two broad strategies
    for dealing with this complexity. &quot;Image-based methods&quot; try to exhaustively
    capture the exact face appearance under different lighting and viewing conditions,
    and then render the face through weighted image combinations. &quot;Parametric
    methods&quot; instead fit the captured reflectance data to some parametric appearance
    model used during rendering, allowing for a more lightweight and flexible representation
    but at the cost of potentially increased rendering complexity or inexact reproduction.
    The goal of this report is to provide an overview that can guide practitioners
    and researchers in assessing the tradeoffs between current approaches and identifying
    directions for future advances in facial appearance capture.
article_processing_charge: No
author:
- first_name: Oliver
  full_name: Klehm, Oliver
  last_name: Klehm
- first_name: Fabrice
  full_name: Rousselle, Fabrice
  last_name: Rousselle
- first_name: Marios
  full_name: Papas, Marios
  last_name: Papas
- first_name: Derek
  full_name: Bradley, Derek
  last_name: Bradley
- first_name: Christophe
  full_name: Hery, Christophe
  last_name: Hery
- first_name: Bernd
  full_name: Bickel, Bernd
  id: 49876194-F248-11E8-B48F-1D18A9856A87
  last_name: Bickel
  orcid: 0000-0001-6511-9385
- first_name: Wojciech
  full_name: Jarosz, Wojciech
  last_name: Jarosz
- first_name: Thabo
  full_name: Beeler, Thabo
  last_name: Beeler
citation:
  ama: Klehm O, Rousselle F, Papas M, et al. Recent advances in facial appearance
    capture. <i>Computer Graphics Forum</i>. 2015;34(2):709-733. doi:<a href="https://doi.org/10.1111/cgf.12594">10.1111/cgf.12594</a>
  apa: Klehm, O., Rousselle, F., Papas, M., Bradley, D., Hery, C., Bickel, B., … Beeler,
    T. (2015). Recent advances in facial appearance capture. <i>Computer Graphics
    Forum</i>. Wiley-Blackwell. <a href="https://doi.org/10.1111/cgf.12594">https://doi.org/10.1111/cgf.12594</a>
  chicago: Klehm, Oliver, Fabrice Rousselle, Marios Papas, Derek Bradley, Christophe
    Hery, Bernd Bickel, Wojciech Jarosz, and Thabo Beeler. “Recent Advances in Facial
    Appearance Capture.” <i>Computer Graphics Forum</i>. Wiley-Blackwell, 2015. <a
    href="https://doi.org/10.1111/cgf.12594">https://doi.org/10.1111/cgf.12594</a>.
  ieee: O. Klehm <i>et al.</i>, “Recent advances in facial appearance capture,” <i>Computer
    Graphics Forum</i>, vol. 34, no. 2. Wiley-Blackwell, pp. 709–733, 2015.
  ista: Klehm O, Rousselle F, Papas M, Bradley D, Hery C, Bickel B, Jarosz W, Beeler
    T. 2015. Recent advances in facial appearance capture. Computer Graphics Forum.
    34(2), 709–733.
  mla: Klehm, Oliver, et al. “Recent Advances in Facial Appearance Capture.” <i>Computer
    Graphics Forum</i>, vol. 34, no. 2, Wiley-Blackwell, 2015, pp. 709–33, doi:<a
    href="https://doi.org/10.1111/cgf.12594">10.1111/cgf.12594</a>.
  short: O. Klehm, F. Rousselle, M. Papas, D. Bradley, C. Hery, B. Bickel, W. Jarosz,
    T. Beeler, Computer Graphics Forum 34 (2015) 709–733.
date_created: 2018-12-11T11:53:43Z
date_published: 2015-05-01T00:00:00Z
date_updated: 2025-09-23T10:32:38Z
day: '01'
department:
- _id: BeBi
doi: 10.1111/cgf.12594
external_id:
  isi:
  - '000358326600063'
intvolume: '        34'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- url: https://graphics.ethz.ch/~mpapas/publications/fac_star.pdf
month: '05'
oa_version: None
page: 709 - 733
publication: Computer Graphics Forum
publication_status: published
publisher: Wiley-Blackwell
publist_id: '5391'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Recent advances in facial appearance capture
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 34
year: '2015'
...
