---
_id: '2073'
abstract:
- lang: eng
text: 'Background: Drosophila albomicans is a unique model organism for studying
both sex chromosome and B chromosome evolution. A pair of its autosomes comprising
roughly 40% of the whole genome has fused to the ancient X and Y chromosomes only
about 0.12 million years ago, thereby creating the youngest and most gene-rich
neo-sex system reported to date. This species also possesses recently derived
B chromosomes that show non-Mendelian inheritance and significantly influence
fertility.Methods: We sequenced male flies with B chromosomes at 124.5-fold genome
coverage using next-generation sequencing. To characterize neo-Y specific changes
and B chromosome sequences, we also sequenced inbred female flies derived from
the same strain but without B''s at 28.5-fold.Results: We assembled a female genome
and placed 53% of the sequence and 85% of the annotated proteins into specific
chromosomes, by comparison with the 12 Drosophila genomes. Despite its very recent
origin, the non-recombining neo-Y chromosome shows various signs of degeneration,
including a significant enrichment of non-functional genes compared to the neo-X,
and an excess of tandem duplications relative to other chromosomes. We also characterized
a B-chromosome linked scaffold that contains an actively transcribed unit and
shows sequence similarity to the subcentromeric regions of both the ancient X
and the neo-X chromosome.Conclusions: Our results provide novel insights into
the very early stages of sex chromosome evolution and B chromosome origination,
and suggest an unprecedented connection between the births of these two systems
in D. albomicans.'
author:
- first_name: Qi
full_name: Zhou, Qi
last_name: Zhou
- first_name: Hongmei
full_name: Zhu, Hongmei
last_name: Zhu
- first_name: Quanfei
full_name: Huang, Quanfei
last_name: Huang
- first_name: Li
full_name: Zhao, Li
last_name: Zhao
- first_name: Guo
full_name: Zhang, Guo J
last_name: Zhang
- first_name: Scott
full_name: Roy, Scott W
last_name: Roy
- first_name: Beatriz
full_name: Beatriz Vicoso
id: 49E1C5C6-F248-11E8-B48F-1D18A9856A87
last_name: Vicoso
orcid: 0000-0002-4579-8306
- first_name: Zhaolin
full_name: Xuan, Zhaolin
last_name: Xuan
- first_name: Jue
full_name: Ruan, Jue
last_name: Ruan
- first_name: Yue
full_name: Zhang, Yue
last_name: Zhang
- first_name: Ruoping
full_name: Zhao, Ruoping
last_name: Zhao
- first_name: Chen
full_name: Ye, Chen
last_name: Ye
- first_name: Xiuqing
full_name: Zhang, Xiuqing
last_name: Zhang
- first_name: Jùn
full_name: Wang, Jùn
last_name: Wang
- first_name: Wen
full_name: Wang, Wen
last_name: Wang
- first_name: Doris
full_name: Bachtrog, Doris
last_name: Bachtrog
citation:
ama: Zhou Q, Zhu H, Huang Q, et al. Deciphering neo-sex and B chromosome evolution
by the draft genome of Drosophila albomicans. BMC Genomics. 2012;13(1).
doi:10.1186/1471-2164-13-109
apa: Zhou, Q., Zhu, H., Huang, Q., Zhao, L., Zhang, G., Roy, S., … Bachtrog, D.
(2012). Deciphering neo-sex and B chromosome evolution by the draft genome of
Drosophila albomicans. BMC Genomics. BioMed Central. https://doi.org/10.1186/1471-2164-13-109
chicago: Zhou, Qi, Hongmei Zhu, Quanfei Huang, Li Zhao, Guo Zhang, Scott Roy, Beatriz
Vicoso, et al. “Deciphering Neo-Sex and B Chromosome Evolution by the Draft Genome
of Drosophila Albomicans.” BMC Genomics. BioMed Central, 2012. https://doi.org/10.1186/1471-2164-13-109.
ieee: Q. Zhou et al., “Deciphering neo-sex and B chromosome evolution by
the draft genome of Drosophila albomicans,” BMC Genomics, vol. 13, no.
1. BioMed Central, 2012.
ista: Zhou Q, Zhu H, Huang Q, Zhao L, Zhang G, Roy S, Vicoso B, Xuan Z, Ruan J,
Zhang Y, Zhao R, Ye C, Zhang X, Wang J, Wang W, Bachtrog D. 2012. Deciphering
neo-sex and B chromosome evolution by the draft genome of Drosophila albomicans.
BMC Genomics. 13(1).
mla: Zhou, Qi, et al. “Deciphering Neo-Sex and B Chromosome Evolution by the Draft
Genome of Drosophila Albomicans.” BMC Genomics, vol. 13, no. 1, BioMed
Central, 2012, doi:10.1186/1471-2164-13-109.
short: Q. Zhou, H. Zhu, Q. Huang, L. Zhao, G. Zhang, S. Roy, B. Vicoso, Z. Xuan,
J. Ruan, Y. Zhang, R. Zhao, C. Ye, X. Zhang, J. Wang, W. Wang, D. Bachtrog, BMC
Genomics 13 (2012).
date_created: 2018-12-11T11:55:33Z
date_published: 2012-03-22T00:00:00Z
date_updated: 2021-01-12T06:55:08Z
day: '22'
doi: 10.1186/1471-2164-13-109
extern: 1
intvolume: ' 13'
issue: '1'
license: https://creativecommons.org/licenses/by/4.0/
month: '03'
publication: BMC Genomics
publication_status: published
publisher: BioMed Central
publist_id: '4965'
quality_controlled: 0
status: public
title: Deciphering neo-sex and B chromosome evolution by the draft genome of Drosophila
albomicans
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
volume: 13
year: '2012'
...
---
_id: '2079'
abstract:
- lang: eng
text: We introduce an algorithm and representation for fabricating 3D shape abstractions
using mutually intersecting planar cut-outs. The planes have prefabricated slits
at their intersections and are assembled by sliding them together. Often such
abstractions are used as a sculptural art form or in architecture and are colloquially
called ‘cardboard sculptures’. Based on an analysis of construction rules, we
propose an extended binary space partitioning tree as an efficient representation
of such cardboard models which allows us to quickly evaluate the feasibility of
newly added planar elements. The complexity of insertion order quickly increases
with the number of planar elements and manual analysis becomes intractable. We
provide tools for generating cardboard sculptures with guaranteed constructibility.
In combination with a simple optimization and sampling strategy for new elements,
planar shape abstraction models can be designed by iteratively adding elements.
As an output, we obtain a fabrication plan that can be printed or sent to a laser
cutter. We demonstrate the complete process by designing and fabricating cardboard
models of various well-known 3D shapes.
author:
- first_name: Kristian
full_name: Hildebrand, Kristian
last_name: Hildebrand
- first_name: Bernd
full_name: Bernd Bickel
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Marc
full_name: Alexa, Marc
last_name: Alexa
citation:
ama: 'Hildebrand K, Bickel B, Alexa M. crdbrd: Shape fabrication by sliding planar
slices. Computer Graphics Forum. 2012;31(2pt3):583-592. doi:10.1111/j.1467-8659.2012.03037.x'
apa: 'Hildebrand, K., Bickel, B., & Alexa, M. (2012). crdbrd: Shape fabrication
by sliding planar slices. Computer Graphics Forum. Wiley-Blackwell. https://doi.org/10.1111/j.1467-8659.2012.03037.x'
chicago: 'Hildebrand, Kristian, Bernd Bickel, and Marc Alexa. “Crdbrd: Shape Fabrication
by Sliding Planar Slices.” Computer Graphics Forum. Wiley-Blackwell, 2012.
https://doi.org/10.1111/j.1467-8659.2012.03037.x.'
ieee: 'K. Hildebrand, B. Bickel, and M. Alexa, “crdbrd: Shape fabrication by sliding
planar slices,” Computer Graphics Forum, vol. 31, no. 2pt3. Wiley-Blackwell,
pp. 583–592, 2012.'
ista: 'Hildebrand K, Bickel B, Alexa M. 2012. crdbrd: Shape fabrication by sliding
planar slices. Computer Graphics Forum. 31(2pt3), 583–592.'
mla: 'Hildebrand, Kristian, et al. “Crdbrd: Shape Fabrication by Sliding Planar
Slices.” Computer Graphics Forum, vol. 31, no. 2pt3, Wiley-Blackwell, 2012,
pp. 583–92, doi:10.1111/j.1467-8659.2012.03037.x.'
short: K. Hildebrand, B. Bickel, M. Alexa, Computer Graphics Forum 31 (2012) 583–592.
date_created: 2018-12-11T11:55:35Z
date_published: 2012-05-01T00:00:00Z
date_updated: 2021-01-12T06:55:10Z
day: '01'
doi: 10.1111/j.1467-8659.2012.03037.x
extern: 1
intvolume: ' 31'
issue: 2pt3
month: '05'
page: 583 - 592
publication: Computer Graphics Forum
publication_status: published
publisher: Wiley-Blackwell
publist_id: '4959'
quality_controlled: 0
status: public
title: 'crdbrd: Shape fabrication by sliding planar slices'
type: journal_article
volume: 31
year: '2012'
...
---
_id: '2103'
abstract:
- lang: eng
text: Although facial hair plays an important role in individual expression, facial-hair
reconstruction is not addressed by current facecapture systems. Our research addresses
this limitation with an algorithm that treats hair and skin surface capture together
in a coupled fashion so that a high-quality representation of hair fibers as well
as the underlying skin surface can be reconstructed. We propose a passive, camera-based
system that is robust against arbitrary motion since all data is acquired within
the time period of a single exposure. Our reconstruction algorithm detects and
traces hairs in the captured images and reconstructs them in 3D using a multiview
stereo approach. Our coupled skin-reconstruction algorithm uses information about
the detected hairs to deliver a skin surface that lies underneath all hairs irrespective
of occlusions. In dense regions like eyebrows, we employ a hair-synthesis method
to create hair fibers that plausibly match the image data. We demonstrate our
scanning system on a number of individuals and show that it can successfully reconstruct
a variety of facial-hair styles together with the underlying skin surface.
author:
- first_name: Thabo
full_name: Beeler, Thabo
last_name: Beeler
- first_name: Bernd
full_name: Bernd Bickel
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Gioacchino
full_name: Noris, Gioacchino
last_name: Noris
- first_name: Paul
full_name: Beardsley, Paul A
last_name: Beardsley
- first_name: Steve
full_name: Marschner, Steve
last_name: Marschner
- first_name: Robert
full_name: Sumner, Robert W
last_name: Sumner
- first_name: Markus
full_name: Groß, Markus S
last_name: Groß
citation:
ama: Beeler T, Bickel B, Noris G, et al. Coupled 3D reconstruction of sparse facial
hair and skin. ACM Transactions on Graphics. 2012;31(4). doi:10.1145/2185520.2185613
apa: Beeler, T., Bickel, B., Noris, G., Beardsley, P., Marschner, S., Sumner, R.,
& Groß, M. (2012). Coupled 3D reconstruction of sparse facial hair and skin.
ACM Transactions on Graphics. ACM. https://doi.org/10.1145/2185520.2185613
chicago: Beeler, Thabo, Bernd Bickel, Gioacchino Noris, Paul Beardsley, Steve Marschner,
Robert Sumner, and Markus Groß. “Coupled 3D Reconstruction of Sparse Facial Hair
and Skin.” ACM Transactions on Graphics. ACM, 2012. https://doi.org/10.1145/2185520.2185613.
ieee: T. Beeler et al., “Coupled 3D reconstruction of sparse facial hair
and skin,” ACM Transactions on Graphics, vol. 31, no. 4. ACM, 2012.
ista: Beeler T, Bickel B, Noris G, Beardsley P, Marschner S, Sumner R, Groß M. 2012.
Coupled 3D reconstruction of sparse facial hair and skin. ACM Transactions on
Graphics. 31(4).
mla: Beeler, Thabo, et al. “Coupled 3D Reconstruction of Sparse Facial Hair and
Skin.” ACM Transactions on Graphics, vol. 31, no. 4, ACM, 2012, doi:10.1145/2185520.2185613.
short: T. Beeler, B. Bickel, G. Noris, P. Beardsley, S. Marschner, R. Sumner, M.
Groß, ACM Transactions on Graphics 31 (2012).
date_created: 2018-12-11T11:55:44Z
date_published: 2012-01-01T00:00:00Z
date_updated: 2021-01-12T06:55:20Z
day: '01'
doi: 10.1145/2185520.2185613
extern: 1
intvolume: ' 31'
issue: '4'
month: '01'
publication: ACM Transactions on Graphics
publication_status: published
publisher: ACM
publist_id: '4932'
quality_controlled: 0
status: public
title: Coupled 3D reconstruction of sparse facial hair and skin
type: journal_article
volume: 31
year: '2012'
...
---
_id: '2101'
abstract:
- lang: eng
text: 'Articulated deformable characters are widespread in computer animation. Unfortunately,
we lack methods for their automatic fabrication using modern additive manufacturing
(AM) technologies. We propose a method that takes a skinned mesh as input, then
estimates a fabricatable single-material model that approximates the 3D kinematics
of the corresponding virtual articulated character in a piecewise linear manner.
We first extract a set of potential joint locations. From this set, together with
optional, user-specified range constraints, we then estimate mechanical friction
joints that satisfy inter-joint non-penetration and other fabrication constraints.
To avoid brittle joint designs, we place joint centers on an approximate medial
axis representation of the input geometry, and maximize each joint''s minimal
cross-sectional area. We provide several demonstrations, manufactured as single,
assembled pieces using 3D printers. '
acknowledgement: This work was partially supported by NSF grant IIS-1116619. Doug
James acknowledges support from Pixar and a fellowship from the John Simon Guggenheim
Memorial Foundation
author:
- first_name: Moritz
full_name: Bac̈her, Moritz
last_name: Bac̈Her
- first_name: Bernd
full_name: Bernd Bickel
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Doug
full_name: James, Doug L
last_name: James
- first_name: Hanspeter
full_name: Pfister, Hanspeter
last_name: Pfister
citation:
ama: Bac̈Her M, Bickel B, James D, Pfister H. Fabricating articulated characters
from skinned meshes. ACM Transactions on Graphics. 2012;31(4). doi:10.1145/2185520.2185543
apa: Bac̈Her, M., Bickel, B., James, D., & Pfister, H. (2012). Fabricating articulated
characters from skinned meshes. ACM Transactions on Graphics. ACM. https://doi.org/10.1145/2185520.2185543
chicago: Bac̈Her, Moritz, Bernd Bickel, Doug James, and Hanspeter Pfister. “Fabricating
Articulated Characters from Skinned Meshes.” ACM Transactions on Graphics.
ACM, 2012. https://doi.org/10.1145/2185520.2185543.
ieee: M. Bac̈Her, B. Bickel, D. James, and H. Pfister, “Fabricating articulated
characters from skinned meshes,” ACM Transactions on Graphics, vol. 31,
no. 4. ACM, 2012.
ista: Bac̈Her M, Bickel B, James D, Pfister H. 2012. Fabricating articulated characters
from skinned meshes. ACM Transactions on Graphics. 31(4).
mla: Bac̈Her, Moritz, et al. “Fabricating Articulated Characters from Skinned Meshes.”
ACM Transactions on Graphics, vol. 31, no. 4, ACM, 2012, doi:10.1145/2185520.2185543.
short: M. Bac̈Her, B. Bickel, D. James, H. Pfister, ACM Transactions on Graphics
31 (2012).
date_created: 2018-12-11T11:55:43Z
date_published: 2012-01-01T00:00:00Z
date_updated: 2021-01-12T06:55:19Z
day: '01'
doi: 10.1145/2185520.2185543
extern: 1
intvolume: ' 31'
issue: '4'
month: '01'
publication: ACM Transactions on Graphics
publication_status: published
publisher: ACM
publist_id: '4933'
quality_controlled: 0
status: public
title: Fabricating articulated characters from skinned meshes
type: journal_article
volume: 31
year: '2012'
...
---
_id: '2102'
abstract:
- lang: eng
text: 'We propose a complete process for designing, simulating, and fabricating
synthetic skin for an animatronics character that mimics the face of a given subject
and its expressions. The process starts with measuring the elastic properties
of a material used to manufacture synthetic soft tissue. Given these measurements
we use physicsbased simulation to predict the behavior of a face when it is driven
by the underlying robotic actuation. Next, we capture 3D facial expressions for
a given target subject. As the key component of our process, we present a novel
optimization scheme that determines the shape of the synthetic skin as well as
the actuation parameters that provide the best match to the target expressions.
We demonstrate this computational skin design by physically cloning a real human
face onto an animatronics figure. '
acknowledgement: This work was supported in part by the NCCR Co-Me of the Swiss NSF
author:
- first_name: Bernd
full_name: Bernd Bickel
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Peter
full_name: Kaufmann, Peter
last_name: Kaufmann
- first_name: Mélina
full_name: Skouras, Mélina
last_name: Skouras
- first_name: Bernhard
full_name: Thomaszewski, Bernhard
last_name: Thomaszewski
- first_name: Derek
full_name: Bradley, Derek J
last_name: Bradley
- first_name: Thabo
full_name: Beeler, Thabo
last_name: Beeler
- first_name: Philip
full_name: Jackson, Philip V
last_name: Jackson
- first_name: Steve
full_name: Marschner, Steve
last_name: Marschner
- first_name: Wojciech
full_name: Matusik, Wojciech
last_name: Matusik
- first_name: Markus
full_name: Groß, Markus S
last_name: Groß
citation:
ama: Bickel B, Kaufmann P, Skouras M, et al. Physical face cloning. ACM Transactions
on Graphics. 2012;31(4). doi:10.1145/2185520.2185614
apa: Bickel, B., Kaufmann, P., Skouras, M., Thomaszewski, B., Bradley, D., Beeler,
T., … Groß, M. (2012). Physical face cloning. ACM Transactions on Graphics.
ACM. https://doi.org/10.1145/2185520.2185614
chicago: Bickel, Bernd, Peter Kaufmann, Mélina Skouras, Bernhard Thomaszewski, Derek
Bradley, Thabo Beeler, Philip Jackson, Steve Marschner, Wojciech Matusik, and
Markus Groß. “Physical Face Cloning.” ACM Transactions on Graphics. ACM,
2012. https://doi.org/10.1145/2185520.2185614.
ieee: B. Bickel et al., “Physical face cloning,” ACM Transactions on Graphics,
vol. 31, no. 4. ACM, 2012.
ista: Bickel B, Kaufmann P, Skouras M, Thomaszewski B, Bradley D, Beeler T, Jackson
P, Marschner S, Matusik W, Groß M. 2012. Physical face cloning. ACM Transactions
on Graphics. 31(4).
mla: Bickel, Bernd, et al. “Physical Face Cloning.” ACM Transactions on Graphics,
vol. 31, no. 4, ACM, 2012, doi:10.1145/2185520.2185614.
short: B. Bickel, P. Kaufmann, M. Skouras, B. Thomaszewski, D. Bradley, T. Beeler,
P. Jackson, S. Marschner, W. Matusik, M. Groß, ACM Transactions on Graphics 31
(2012).
date_created: 2018-12-11T11:55:43Z
date_published: 2012-07-04T00:00:00Z
date_updated: 2021-01-12T06:55:19Z
day: '04'
doi: 10.1145/2185520.2185614
extern: 1
intvolume: ' 31'
issue: '4'
month: '07'
publication: ACM Transactions on Graphics
publication_status: published
publisher: ACM
publist_id: '4931'
quality_controlled: 0
status: public
title: Physical face cloning
type: journal_article
volume: 31
year: '2012'
...