June 6, 2013: The
for SGP 2013 is available. This year's conference features
invited speakers, a
two-day graduate school (July 1-2), and a high-quality papers program. I hope to see many
of you in the beautiful Genova, Italy!
May 31, 2013: Maybe only for a brief period, our paper on field-guided shape part registration (SIGGRAPH
Asia 2012) is featured on the revamped ACM SIGGRAPH homepage.
May 21, 2013: Our L1-medial skeleton paper is included in the
SIGGRAPH 2013 technical paper video preview. See the whole preview on
- [new] April 22, 2013:
Four papers accepted to SIGGRAPH 2013 and available from the
papers page: 1) Co-Hierachical
Analysis of Shape Structures; 2) Layered Analysis of Irregular Facades via Symmetry Maximization;
3) Qualitative Organization of Collections of Shapes via Quartet Analysis; and
4) L1-Medial Skeleton of Point Cloud (see
code & data).
- [new] April 18, 2013:
I will serve on the SIGGRAPH Asia 2013 (Hong Kong) papers committee.
- April 9, 2013: Talk on "High-Level Geometry Processing: Now and New Challenges", given at Tsinghua University.
Slides available upon requests.
- March 18, 2013:
Source code for our mean-curvature
skeleton algorithm is available. The
method computes a curve skeleton (or an intermediate meso-skeleton) from a mesh
and we believe it is the best-performing mesh skeletonization scheme (quality+speed) to date!
- March 8, 2013:
Check out our new paper on bilateral
maps. Unlike the traditional way of defining local shape descriptors,
which are centered at single feature points, the key new idea is to define
the shape descriptors over regions anchored by a pair of feature points.
- March 1, 2013:
Congrats to Oliver
who received a prestigeous
Azrieli postdoc fellowship as well as a postdoc fellowship from Tel
Aviv University (TAU) in 2013. He
will visit Prof. Danial Cohen-Or at TAU.
- December 20, 2012:
I will serve on the SIGGRAPH 2013 papers committee.
- December 14, 2012:
THE kiss! The best moment of 2012 is that kiss. See picture on
- November 29, 2012:
I am co-chairing SGP 2013 with
Yaron Lipman. SGP 2013 will be held on July 3-5, in Genova, Italy.
- November 26, 2012:
A image from our active
co-analysis paper (to appear at SIGGRAPH Asia 2012 in Singapore) was
chosen as the front image of the
ACM Transaction on Graphics (TOG) proceeding.
- November 1, 2012:
We have received an NSERC Engage Grant in collaboration with
iWonderLearning Inc., working to develop iOS applications that
integrate 3D modeling with language learning. The general theme of the
project is experiential and visual learning.
- October 25, 2012:
We welcome two visiting students supported by the China Scholarship
Council. Ruizhen Hu
arrives from Zhejiang University and Yi Chen is from the
National University of Defense Technology. Both of them start their
visits in Fall 2012 and will stay at the GrUVi lab for a year.
- September 24, 2012:
Final version of our curve style paper is available from the
papers page. This work is a bit unconventional; it
attempts to extract curve styles from a set of shape silhouettes without
a conceptual definition of what the style is. The approach is data-driven
and relies an operational definition for style-content separation.
- September 19, 2012:
Final versions of our four
SIGGRAPH Asia 2012 papers
are now available from the papers page. Also
see the right column of this page. Code and datasets for some of these papers are
also made available, please let me know if you have any comments or suggestions.
- September 10, 2012:
We have made available a dataset, the
Shape COSEG Dataset,
to help researchers evaluate their shape co-segmentation algorithms.
- August 28, 2012:
Welcome three new graduate students: Rui Ma (Ph.D.) from Jilin University,
Shuyang Sun (Ph.D.) from Zhejiang University, and Sushant Joshi (M.Sc.) from
Banaras Hindu University.
- June 29 - July 8, 2012:
I will have an intense 10-day trip to China, visiting MSRA, BUAA, USTC, SIAT, and NUDT, and
giving 6 talks along the way!
- June 29, 2012:
Andrea's paper on
mean curvature skeletons has been accepted to SGP 2012.
The final version of the paper is available from the papers page.
- June 28, 2012:
Nima successfully defended his masters
thesis on 5-6-7 meshes today.
Now he is on his way to work at Facebook.
- May 9, 2012: Our SIGGRAPH 2012 paper on set evolution for 3D shape modeling is available on the
publication page. A short clip of the paper's
video has been selected as part of the SIGGRAPH 2012 Technical Paper Video Trailer!
- I gave a talk at the Center of Scientific Computing (CSC) seminar on
Symmetry Analysis on Shapes and Structures. Since the talk covered
unpublished material, the slides are only available through requests.
- March 14, 2012: Check out our cute
paper on 5-6-7 meshes, which resulted from a course project
by Nima. The paper will be presented at
Graphics Interface 2012 in Toronto in June.
- February 28, 2012: I will serve on the technical
papers committee for SIGGRAPH Asia 2012, to be held in Singpore, November 28 - December 1, 2012.
- February 26, 2012:
Hui's paper on empirical mode decomposition for meshes has been
conditionally accepted to Geometric Modeling and
Processing (GMP) 2012, which will be held in Yellow Mountain in China in June.
See publications page.
- February 22, 2012: Dr. Zhenbao Liu from NWPU of
China is visiting the group for a month. He will conduct collaborative research in the area of shape
analysis and retrieval.
- January 19, 2012: Our five-year NSERC CRD project in collaboration
with Object Raku Technology is starting officially this January. Raku specializes
in LIDAR data processing and analysis technologies. The project is on LIDAR data feature extraction and receives funding
from NSERC and Raku in the amount of $300,000 over five years.
- January 15, 2012: Eric and Kevin, who visited the group
for two years each, have both become Assistant Professors in the National University of Defense Technologies, China.
Kevin also won a Best Thesis Award in his university on "Semantics-Driven 3D Shape Analysis and Modeling".
- December 19, 2011: PPT slides
for two courses I gave at SIGGRAPH Asia 2011 in Hong Kong
are available from the right column: one on "Towards High-Level Geometry Processing" as part of the course on
"Elements of Geometry Processing" with Bruno Levy and one on
"Towards the First SIGGRAPH Paper" as part of the course on "How to Write a SIGGRAPH Paper".
- December 16, 2011: Congrats to
Ibraheem on having his first paper accepted (to the Visual
Computer). See video and paper.
- November 30, 2011:
Oliver van Kaick successfully defended his
Ph.D. thesis on "Matching Dissimilar Shapes". Congrats, Dr. van Kaick!
- November 28, 2011:
I will serve on the SIGGRAPH 2012 papers committee.
- September 20, 2011:
Two of our papers "Unsupervised Co-Segmentation of a Set of Shapes via
Descriptor-Space Spectral Clustering" and "Structure-Preserving Retargeting of Irregular 3D
Architecture" have been accepted to SIGGRAPH Asia 2011. Online versions of
the papers are now available.
- August 23, 2011: I co-organized a five-day Banff
Workshop on "Geometry for Anatomy", August 28 - September 2. See
my talk on symmetry analysis for
shape processing (18 MB).
- August 17, 2011:
Check out some animation pieces submitted
for the final project of CMPT 466 (Computer Animation)
- August 16, 2011:
Oliver van Kaick receives an MITACS
Elevate Postdoc Fellowship valued at
$65,000 per year. He will take up the position with our industrial partner
PDFTron in Vancouver.
- August 12, 2011:
Check out some of the recent paper and invited talks in the right column, including
the SIGGRAPH 2011 talk on photo-inspired modeling and
the talk on Towards
High-Level Geometry Processing I have given several times this year.
- June 27, 2011:
Our VASE (volume-aware surface evolution) paper has been accepted to
SGP 2011. Congrats to
- June 22, 2011:
Slides for SMI 2011 talk on point cloud silhouettes is
available. In retrospect, the paper is really about how to find proper k-nearest neighbors (kNNs)!
- April 7, 2011:
Helmut Pottmann gives
a Distinguished Lecture on Geometric Computing for Freeform Architecture.
- April 6, 2011:
successfully defended his Ph.D. thesis on "A Plane View of Geometric
Silhouettes". Congrats, Matt!
- March 30, 2011: Congrats to
who is awarded an Alexander Bell Canada Graduate Scholarship from NSERC;
the award is given to the most selective group of scholarship
- February 11, 2011:
Congrats to Ibraheem
who successfully defended his MSc thesis on detail-replicating shape
stretching; see demo
video and code.
- December 4, 2010:
Upcoming talk by Steven (Shlomo) Gortler
on December 17. See talk
- November 10, 2010:
Upcoming talk by Ligang Liu who will be visiting me between Nov. 21 and 24. See
- September 13, 2010:
Final version of our three SIGGRAPH Asia papers are now available:
1. cone carving;
2. tree skeleton reconstruction;
3. style-content separation.
- August 20, 2010:
Visit from Johannes Kopf
(Microsoft Research) and Dani
University) and talk by Johannes on Street Slide and Automatic Generation
of Destination Maps.
- July 26, 2010: Our
on spectral mesh processing has concluded. See this
wiki from ALICEpedia for all the course-related information,
including presentation slides. A previous version of the
course was given at SIGGRAPH Asia 2009.
- May 12, 2010: Slides for my Eurographics 2010
Report (STAR) talk on shape correspondence is available here.
- April 30, 2010: Andrea
Tagliassachi has received the MITACS Best
Student Paper Award for 2009. Congrats, Andrea!
- January 12, 2010: One
of our papers won the 2010 Most Cited Paper Award for
the journal Computer-Aided Design.
Papers for this distinction are determined solely based on the highest number
of cites, excluding self-citations, received for all journal articles published in
- November 16, 2009: Due to popular demand, we are making the MATLAB code for
our earlier paper on
robust spectral shape correspondence available. Please download
this ZIP file. The code can be easily adapted to compute
the eigenvalue shape descriptors (EVD) from this paper. Instructions are
in the README file. Note that this code does not contain a Nystrom approximation component,
hence only somewhat small meshes (up to 5K vertices) should be tried on. The code was
written by Varun Jain and last updated by Oliver van Kaick. If you have
any questions, please ask Oliver or myself.