Yanxi Liu's Home Page
Co-Director of the Lab for Perception, Action and Cognition (LPAC).
Associate Professor of Computer Science and Engineering and Electrical Engineering, College of Engineering, Penn State University
Address and Phone Numbers
Dr. Yanxi Liu338B IST Building
Office: (814) 865-7495
Email: yanxi ATsign cse.psu.edu
What's new
2012
Publication:
Curved Glide-Reflection Symmetry Detection
Seungkyu Lee and Yanxi Liu
The IEEE Transaction on Pattern Analysis and Machine Intelligence (TPAMI),
February 2012
Volume 34, Number 2, Pages 266-278
[PDF]
[Project
Page]
Statistical Asymmetry-based Brain Tumor Segmentation from 3D MR
Images
Chenping Yu, Guilherme C. S. Ruppert, Dan T.
D. Nguyen, Alexandre X. Falcao,
and Yanxi Liu.
5th
international joint conference on biomedical engineering systems and
technologies, 2012.
[PDF]
Teaching:
Pattern Recognition: Principles and Applications
Book: Pattern Recognition and Machine Learning by
Christopher M. Bishop
CSE 583/EE 552 of Spring 2012
Location: 222 IST
Time: Tuesdays and Thursdays from 2:30-3:45 PM.
Tentative syllabus.
Service:
Co-Chairing “Symmetry Detection
from Real World Images”, a CVPR 2012
(Computer Vision and Pattern Recognition) workshop.
Call for participation
!
Call for photos
capturing real world symmetries!
Website to CVPR 2011 NSF “Symmetry Detection” competition.
Workshop co-Chair for the 11th Asian
Conference on Computer Vision ACCV 2012
2011
-- New Course (Fall 2011): Computational
Regularity, CSE 598G
-- Radiological Society of North America (RSNA 2011):
Supervised Machine
Learning for Brain Tumor Detection in Structural MRI
Koshy, Yu,
Nguyen (MD), Kashyap, Collins, Liu
--
Invited Instructor for the 3rd Sino-USA Summer School in Vision,
Learning and Pattern Recognition (VLPR2011), Chengdu, China
--
We are the organizers
of a CVPR 2011 workshop (June 24, 2011) on
Symmetry
Detection from Real World Images – An NSF supported Competition!
-- IEEE TPAMI paper (Manuscript Type:
Regular)
Title:
Curved Glide-Reflection Symmetry
Detection
Authors: S. Lee and Y. Liu
To appear.
-- Invited Speaker of Cold
Spring Harbor
Asia Conference on “High Throughput Biology”,
Sozhou, China
(April)
-- Graduate-level Seminar (Spring):
Pattern Recognition (CSE 583, EE 552)
Textbook:
Pattern Recognition and Machine Learning (Bishop)
2010
--
ACCV 2010 papers:
·
Curved
Reflection Symmetry Detection with Self-Validation
Jingchen Liu and Yanxi Liu
·
Image
De-fencing Revisited
Minwoo Park and Kyle Brocklehurst
and Robert T. Collins and Yanxi Liu
·
Translation-Symmetry-based
Perceptual Grouping with Applications to Urban Scenes
Minwoo Park and Kyle Brocklehurst
and Robert T. Collins and Yanxi Liu
--
The Survey paper (pdf file,
16MB) on “Computational
Symmetry” is
published in Foundations and Trends in Computer
Graphics and Vision 2010 (Foundations and Trends® in Computer
Graphics and Vision Volume 5 Issue 1-2, pp: 1-195. DOI: 10.1561/0600000008)
--
Organizer of a
full-day ECCV 2010
Tutorial on Computational
Symmetry: Past, Present, Future
-- Invited
speaker/instructor at Computer Vision Summer School VLPR2010 (and VLPR2009, July
2009), July 2010.
-- CVPR 2010 papers
accepted:
o
Multi-Target
Tracking of Time-varying Spatial Patterns by Jingchen Liu
and Yanxi Liu
o
Data
Driven Mean-Shift Belief Propagation For non-Gaussian MRFs by Minwoo Park,
Somesh Kashyap, Robert T.
Collins and Yanxi Liu
-- New PAMI paper
- Skewed Rotation Symmetry
Group Detection (PAMI
preprint) (2010)
Seungkyu Lee and Yanxi Liu
IEEE Transaction on Pattern Analysis and Machine
Intelligence (TPAMI).
Regular Paper. Volume 32, Number 9, Pages 1659 – 1672.
Submitted April
10, 2009, Accepted for publication August 14, 2009. Appeared on-line
September, 2009.
-- Research Seminar, Chinese University of Hong Kong, University
of Science and Technology, Hong Kong (February, 2010)
-- Faculty Spotlight of January 2010
Newsletter, PSU, College of Engineering, Department of Electrical Engineering
Briefs
My tech talk at Google Google (Mountainview, CA) youtube:
TechTalks at Google (December 2008)
NIPS first Algebraic Methods in
Machine Learning Symposium. (2008) Title: Symmetry Group-based Learning for Regularity Discovery from Real World
Patterns
The PSU Near-Regular Texture
Database is formally released! You are invited to visualize, download and
submit photos containing regular, near-regular and irregular textures!
Edited book (LNCS, Springer) on
"Computer
Vision for Biomedical Image Applications: Current Techniques and Future
Trends" is available! If you are interested in obtaining a copy,
contact yanxi!
-- Dr. Liu and Dr. Nguyen (college of medicine) received
the PSU 2008 Grace Woodward Grant for collaborative research in engineering and
medicine on "Asymmetry-based Brain Tumor Quantification", June 2008.
-- Pattern Recognition from 3D
Histology Images for Translational Science and Discovery, PSU CTSA initiative award in
collaboration with Dr. Keith Cheng (COM), May 2008
Invited Speaker for Content-based
Image retrieval for Biomedical Image Archives (MICCAI 2007)
Selected Recent Publication
2010
A SURVEY
PAPER: Computational Symmetry in Computer
Vision and Computer Graphics
Yanxi Liu and Hagit
Hel-Or and Craig S. Kaplan and Luc Van Gool
Foundations and Trends® in Computer Graphics and Vision 2010
Volume 5
Number 1-2
Pages: 1- 195
[PDF]
[Project Page]
Skewed Rotation Symmetry Group Detection
Seungkyu Lee and Yanxi Liu
Pattern Analysis and Machine Intelligence (PAMI) 2010
Volume 32
Number 9
Pages 1659 - 1672
[PDF]
Translational Symmetry-based Perceptual
Grouping with Applications to Urban Scenes
Minwoo Park and Kyle Brocklehurst
and Robert T. Collins and Yanxi Liu
Asian Conference on Computer Vision (ACCV) 2010
[PDF]
Curved Reflection Symmetry Detection with Self-validation
Jingchen Liu and Yanxi Liu
Asian Conference on Computer Vision (ACCV) 2010
[PDF]
[Project
Page]
Image De-fencing Revisited
Asian Conference on Computer Vision (ACCV) 2010
[PDF]
Multi-Target Tracking of Time-Varying Spatial Patterns
Jingchen Liu and Yanxi Liu
Computer Vision and Pattern Recognition (CVPR) 2010
Pages 1-8
[PDF]
[Project
Page]
[Video]
Data
Driven Mean-Shift Belief Propagation For non-Gaussian MRFs
Minwoo Park and Somesh Kashyap and Robert T. Collins and Yanxi Liu
Computer Vision and Pattern Recognition (CVPR) 2010
Pages 1-8
[PDF]
[Project
Page]
2009
Deformed Lattice Detection in Real-World Images using
Mean-Shift Belief Propagation M. Park, K. Brocklehurst,
R. T. Collins, and Yanxi Liu. IEEE TPAMI.
Volume 31
Number 10 October
2009.
[PDF]
[Project
Page]
Curved
Glide-Reflection Symmetry Detection S. Lee and Y. Liu, CVPR
2009 oral presentation.
2008
Deformed Lattice
Detection via Mean-Shift Belief Propagation
M. Park, R. Collins, and Y. Liu
European Conference on Computer Vision (ECCV), October, 2008.
[PDF] [Project Page]
Seungkyu Lee, Robert T. Collins and Yanxi Liu, "Rotation Symmetry Group Detection
Via Frequency Analysis of Frieze-Expansions," Computer Vision and
Pattern Recognition Conference (CVPR '08)
[PDF] [Project Page]
Yanxi
Liu, Tamara Belkina, James H. Hays, and Roberto Lublinerman, "Image De-fencing," Computer
Vision and Pattern Recognition Conference (CVPR '08)
[PDF]
[Project Page]
Minwoo Park, Seungkyu Lee, Po-Chun Chen, Somesh Kashyap, Asad A. Butt and Yanxi Liu, "Performance Evaluation of
State-of-the-Art Discrete Symmetry Detection Algorithms," Computer
Vision and Pattern Recognition Conference (CVPR '08)
[PDF] [Project Page]
Minwoo Park, Yanxi Liu and Robert T. Collins, "Efficient Mean Shift Belief
Propagation for Vision Tracking," Computer Vision and Pattern
Recognition Conference (CVPR '08)
[PDF]
Grant
Schindler, Panchapagesan Krishnamurthy, Roberto Lublinerman, Yanxi Liu and Frank Dellaert, "Detecting and Matching Repeated Patterns for
Automatic Geo-tagging in Urban Environments," Computer Vision and
Pattern Recognition Conference (CVPR '08)
Leonid Teverovskiy,
James Becker, Oscar Lopez, Yanxi Liu, "QUANTIFIED BRAIN ASYMMETRY FOR AGE ESTIMATION OF NORMAL AND AD/MCI
SUBJECTS," 5th IEEE International Symposium on Biomedical Imaging:
From Nano to Macro. May 14-17, 2008. Paris, France.
Brian A. Canada, Georgia K.
Thomas, Keith C. Cheng, James Z. Wang and Yanxi Liu ``Automatic Lattice Detection in
Near-Regular Histology Array Images,'' In Proceedings of the IEEE
International Conference on Image Processing, San Diego, California, IEEE, October 2008.
Brian A. Canada, Georgia K.
Thomas, Keith C. Cheng, James Z. Wang and Yanxi Liu ``Towards Efficient Automated
Characterization of Irregular Histology Images via Transformation to
Frieze-Like Patterns,'' In Proceedings of the ACM International
Conference on Image and Video Retrieval,
Niagara Falls, Canada, ACM, July 2008.
Research Interests
* Computational
Symmetry and Group Theory Applications, including image/video analysis of
brains, faces, gaits, dance (computer vision), mechanical and kinematic
assemblies (robotics), periodical and near-regular patterns (pattern
recognition), and texture analysis, classification and synthesis (computer
graphics).
http://vision.cse.psu.edu/research/research.shtml
* Discriminative subspace exploration for reduction and selection (machine learning), including large biomedical image database indexing and retrieval, classification, CAD for early detection of neurodegenerative diseases, target tracking and deformable registration.
http://vision.cse.psu.edu/research/research.shtml
http://www.cs.cmu.edu/afs/cs.cmu.edu/user/yanxi/www/images/medical_image.html
Teaching
*
Pattern Recognition (and Machine Learning) CSE 583/EE
552 PSU, Spring 2012, Spring 2011 (TA: Jingchen Liu),
Fall 2009 (TA: Minwoo Park), Fall 2008 (TA: Weina Ge)
*
Computer Graphics CSE 458 (CSE 418 2007 and before),
Fall 2011 (TA: Thap Panitanarak),
Fall 2010 (TA: Kyle Brocklehurst), Fall 2009 (TA:
Kyle Brocklehurst), Spring 2009 (TA: Chen-Ping Yu,
TI: Kyle Brocklehurst), Spring 2008 (TA: Roberto Lublinerman), Spring 2007 (TA: Roberto Lublinerman)
*
Computational Regularity, CSE 598G, Fall
2011
*
Machine Learning for Computational
Regularity CSE 598E, Fall
2009
* Computational
Symmetry
(PSU Fall 2007: CSE 398B) (Course Description))
* Computational
Symmetry
(PSU Fall 2006: CSE 398B, IST 597G, schedule #794395) Fall 2006 (Course
Description))
* Group Theory and Its Applications in Robotics, Computer Vision, Computer Graphics and Medical Image Analysis (PSU: CSE 398D, schedule #695956) Spring 2006
*
Group Theory Applications in Robotics, Computer
Vision, Computer Graphics and Medical Image Analysis, CMU
Fall 2005
*
15-462 Computer Graphics, CMU
Spring 2005.
*
Methods in
Medical Image Analysis (16-725) CMU Spring 2005. Spring 2004. Spring 2003.
*
Advanced Machine Perception CMU Spring 1998, Spring 1999, Spring 2000 , and Spring 2001.
Publications (CMU
page)
Students
CURRENT:
Jingchen Liu
(4th year Ph.D. candidate, CSE/PSU)
Gang
Zheng (1st year Ph.D. student, CSE/PSU)
Kyle Brocklehurst (on-leave, Ph.D. candidate, CSE/PSU)
PAST:
Chen-ping Yu (MS) Computer Science and Engineering, PSU 2010
Minwoo Park (Ph.D.) CSE/PSU, 2010. KODAK Research Laboratories.
Suran Cui (MS) EE/PSU,
2010.
I-Kao Chiang (B.S.) Honor thesis,
Somesh Kashyap (MS) EE/PSU, 2010. Blue Belt Technologies
Seungkyu Lee (Ph.D)
CSE/PSU, 2009. SAMSUNG Advanced Institute of Technology.
Tamara Belkina (B.S. honor
thesis) Schreyer Honors College, CSE/PSU, 2008.
Minwoo Park (M.S) EE/PSU. 2007.
Seungkyu Lee (M.S) EE/PSU. 2007.
Zhang, Jiayong (Ph.D.)
RI/CMU May 2006. Google
Lin, Wen-Chieh (Ph.D.) RI/CMU (June 2003 -- January 2006).
National Chiao-Tung University, Taiwan.
Harriet Pashley (BS) CSD/CMU,
2005
Diana Kovalerchik,
CSE/PSU (2010-2011)
Leonid Teverovskiy, ML/CMU
(2002-2008)
Hays, James CSD/CMU (2003-2006)
Quotes
A quotation from Yan-Xi-Shan (unrelated to Yan-Xi Liu)
The requirement of Tai Chi is to be
centered, and not reveal to your opponent where that center is. -- Chen Zhonghua
Without deviation from the norm progress is not possible. In order for one to ``deviate successfully``, one has to have at least a passing acquaintance with whatever norm one expects to deviate from.
---
Frank Zappa, The Real Frank Zappa Book
