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
Adjunct Professor of Radiology Department,
Adjunct Associate Research Professor of the Robotics Institute ( official RI web-page ) and the Machine Learning department, School of Computer Science , Carnegie Mellon University.
Guest Professor of Computer Science
Department,
Address and Phone Numbers
Dr. Yanxi Liu338B
Office: (814) 865-7495
Email: yanxi ATsign cse.psu.edu
What's new
-- Faculty Spotlight of January 2010
Newsletter, PSU, College
of Engineering
-- Distinguished
speaker for the School of Computing , Queens
University
-- Computer Vision Seminar Speaker, Computer
Science Department, University
of Toronto
-- Research Seminar Speaker for the Department
of Statistics at UCLA (November 3, 2009)
-- Symmetry-Driven Shape Matching, Seungkyu Lee and Yanxi Liu. Technical
Report CSE #09-011, PSU.
-- Skewed Rotation Symmetry Group Detection (PAMI preprint)
Seungkyu Lee and
Yanxi Liu
IEEE
Transaction on Pattern Analysis and Machine Intelligence (TPAMI).
Regular
Paper. Submitted April 10, 2009, Accepted
for publication August 14, 2009.
-- Dr. Liu receives Google Research Award (October 2009)
-- Deformed Lattice Detection in Real-World Images using
Mean-Shift Belief Propagation
M. Park, K. Brocklehurst,
R. T. Collins, and Yanxi Liu.
Regular
Paper. IEEE Transaction on Pattern
Analysis and Machine Intelligence (TPAMI). Vol.
31, No. 10. Special Issue on Probabilistic Graphical
Models. Acceptance rate 15% ~ 10/68. OCTOBER 2009.
-- Curved
Glide-Reflection Symmetry Detection Lee and Liu (CVPR 2009 oral presentation, 4% = 61/1464
acceptance rate)
--
Instructor for the NSF summer
school on Computer Vision and Machine
Learning, Beijing University , Beijing ,
China
--
Research Seminar Speaker at MSRA (June 2009)
--
Invited Speaker in the Life Science Institute, Fudan University ,
Shanghai , China
--
Computer Vision Research Speaker, Zhejiang
University , Hongzhou , China
--
My tech talk at Google
(December 2008)
Teaching
Spring 2010 Computational Photography,
by Collins, Capel and Liu
Fall 2009:
* Pattern Recognition (and Machine Learning) CSE
583/EE 552 PSU .
Textbook by Bishop. TA: Minwoo Park
* Computer Graphics CSE 458. Textbook: Fundamentals
of Computer Graphics (2nd edition) by Peter Shirley et al. TA:
Kyle Brocklehurst
* Machine Learning for Computational Regularity CSE
598E
Spring 2009: Computer Graphics (CMPSC 458)
Machine Learning for Computational Regularity (CSE598E, #schedule 314182)
Past -- Fall 2008: Pattern Recognition and Machine Learning (CSE 583/EE 552). Textbook by Christopher M. Bishop
-- Spring 2008: Computer Graphics (CMPSC 458). Here is a video of sample student projects from last year (Spring 2007)! showcase
-- Fall 2007: Computational Symmetry
Service
Short Course/Tutorial Chair (CVPR 2009)
Tutorial (CVPR08 with Y. Ma): Computational
Symmetry: from symmetry group theory to applications and quantitative
validations in computer vision and pattern research
Area Chairs: CVPR 2008, MICCAI
2008
Tutorial (ACCV07): Computational Symmetry
Talks (2007-2008)
NIPS first Algebraic
Methods in Machine Learning Symposium. Title: Symmetry Group-based Learning for Regularity Discovery from Real World
Patterns
Google (Mountainview ,
CA
Perceptual Science Talk, Rutgers
University
The 5th Seminar on Knowledge search Core
ACCMS (Academic Center For Computing and Media Studies)
Kyoto University ,
Yoshida-Honmachi, Sakyo-ku,
Kyoto 606-8501, Japan
Australian National
University
Invited Speaker for Content-based
Image retrieval for Biomedical Image Archives (MICCAI 2007)
Briefs
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
Selected Recent
Publication
2009
Skewed Rotation Symmetry Group
Detection (TPAMI preprint), Seungkyu Lee and Yanxi Liu, IEEE Transaction on Pattern
Analysis and Machine Intelligence (TPAMI). Regular Paper. In Press.
Deformed Lattice Detection in Real-World Images using
Mean-Shift Belief Propagation M. Park,
K. Brocklehurst, R. T. Collins, and Yanxi Liu. IEEE TPAMI. October 2009.
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]
[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
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,
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).
* 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.
Teaching
* Pattern Recognition (and Machine Learning) CSE
583/EE 552 PSU, Fall 2009. TA: Minwoo Park
* Computer Graphics CSE 458,
Fall 2009. TA: Kyle Brocklehurst
* Machine Learning for Computational Regularity CSE
598E, Fall
2009
* Pattern Recognition
(and Machine Learning) CSE 583/EE 552 PSU Fall 2008
* Fundamentals of Computer
Graphics (PSU Spring 2008: CMPSC 458 - OLD COURSE CSE 418)
* Computational Symmetry
(PSU Fall 2007: CSE 398B) (Course Description))
* Computer Graphics (PSU
Spring 2007: CSE 418)
* 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 (complete list)
Students
CURRENT:
Minwoo Park
Jingchen Liu (2nd year Ph.D. candidate, CSE/PSU)
Kyle Brocklehurst
(1st year Ph.D. student, CSE/PSU)
Somesh Kashyap (MS student, EE/PSU)
Chen-ping Yu (MS student,
CSE/PSU)
I-Kao Chiang (B.S. Honor
thesis, Schreyer Honors College/PSU)
PAST:
Seungkyu Lee (Ph.D)
Computer Science and Engineering, PSU, 2009. Currently: SAMSUNG
Advanced Institute
of Technology
Tamara Belkina (B.S. honor thesis) Computer Science and
Engineering, PSU, 2008
Minwoo Park (M.S) Electrical engineering
department, Penn State University. 2007
Seungkyu Lee (M.S) Electrical engineering department, Penn State University. 2007
Hays, James (1st-4th year Ph.D.
student, Computer Science Department 2003-2006)
Harriet Pashley (BS) Computer Science, CMU, 2005
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
