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
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
Gift grant received
from Northrop Grumman Corporation, January 2008
New interdisciplinary NSF
grant, October 2007
Teaching
Current -- Fall 2008: Pattern Recognition and Machine Learning (CSE 583/EE 552). Textbook by Christopher M. Bishop
Past -- 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
Tutorial (ACCV07): Computational
Symmetry
Area Chairs: CVPR
2008, MICCAI 2008
Talks
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
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!
Openings
i.
Part-time
programmer for developing and maintaining neuroimage
image analysis software
ii.
Qualified
graduate (Ph.D. level preferred) and undergraduate (honor thesis) students interested in research projects on
1. Statistical learning in biomedical
image analysis and computer aided-diagnosis (NIH supported)
2. Symmetry and symmetry group theory
application on real world images for machine perception (NSF)
3. Tracking dynamic textures (NSF)
4.
Intelligent robots (exploratory)
iii.
One postdoc position is
open for a qualified individual to work on statistical learning and MR image
analysis of Alzheimer's disease and mild cognitive impairment patients (PA
Health Department).
Recent Publication
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
* 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)
2007
Shape
Variation-Based Frieze Pattern for Robust Gait Recognition
By S.Lee, Y.Liu and R.Collins, CVPR 2007,
June, 2007.
Quantified Symmetry for Entorhinal Spatial Maps
Special Issue in Neurocomputing Journal, Vol.
70, No. 10 - 12, June, 2007, pp. 1723 - 1727.
A Lattice-based
MRF Model for Dynamic Near-regular Texture Tracking
Wen-Chieh Lin and Yanxi Liu.
IEEE Transactions on Pattern Analysis and Machine
Intelligence. Volume 29, No. 5.pp. 777-792. May, 2007.
Discovery of
"Biomarkers" for Alzheimer's Disease Prediction from Structural MR
Images
Y. Liu, L. Teverovskiy, O. Lopez, H. Aizenstein, C. Meltzer, and J. Becker
2007 IEEE International Symposium on Biomedical Imaging, April, 2007.
Feature-based vs.
Intensity-based Neuroimage Registration:
Comprehensive Comparison Using Mutual Information
L. Teverovskiy, O. Carmichael, H. Aizenstein, N. Lazar, and Y. Liu
2007 IEEE International Symposium on Biomedical Imaging, April, 2007.
Longitudinal changes in
cerebral ventricles in the Cardiovascular Health Study
O. Carmichael,
L.H. Kuller, O. Lopez, P.M. Thompson, R.A. Dutton, A.
Lu, S.E. Lee, J.Y. Lee, H. Aizenstein, C. Meltzer, Y. Liu, A.W. Toga, and
J. Becker
Alzheimer's Disease and Associated Disorders, January, 2007.
Understanding the Role of
Facial Asymmetry in Human Face Identification
S. Mitra,
Statistics and Computing, Vol. 17, January, 2007, pp. 57 - 70.
2006
Quantitative Evaluation on Near
Regular Texture Synthesis by W. Lin, J. Hays, C. Wu, V. Kwatra,
Y. Liu. Computer Vision and Pattern Recognition Conference (CVPR) 2006. NYC.
June. Quantitative
Evaluation results page
Body Localization in Still
Images Using Hierarchical Models and Hybrid Search by J. Zhang, Luo, Collins, Liu. CVPR 2006. NYC,
June.
Tracking Dynamic
Near-regular Textures under Occlusions and Rapid Movements. By W. Lin and
Y. Liu. 9th European
Conference on Computer Vision.
Discovering Texture Regularity
as a Higher-Order Correspondence Problem By J.H.
Hays, M. Leordeanu, A.A. Efros,
and Y. Liu. 9th European Conference on
Computer Vision. Graz , Austria
Technical
Reports
Students
CURRENT:
Seungkyu Lee (1st Year Ph.D. student, Computer Science and Engineering, PSU)
Teverovskiy,
Leonid (6th Year Ph.D. student, Machine Learning Department, CMU)
Tamara Belkina (B.S.) Computer Science and Engineering, PSU, 2008
Seungkyu Lee (M.S) Electrical engineering
department, Penn State University. 2007
Minwoo Park (M.S) Electrical engineering department, Penn State University. 2007
Harriet Pashley (BS) Computer Science, CMU, 2005
Hays, James (1st-4th Year Ph.D.
student, Computer Science Department 2003-2006)
Postdocs
Tong Zhao (Robotics Institute, CMU)
Conferences
CVPR 2008 IEEE Computer Societry Conference on Computer Vision and Pattern
Recognition,
MICCAI 2008 11th International
Conference on Medical Image Computing and Computer Assisted Intervention, NYC
September 6-10, 2008
ECCV 2008 the 10th European Conference
on Computer Vision,
Useful Sites
·
Human Brain Project
·
Visible Human Project
·
Visualization Software
·
The National Medical Knowledge Bank (password required)
·
Dagstuhl Seminar
·
CMU School of Computer Science
o
CMU Robotics Institute
o
Biomedical Image Analysis Technology Lab (password required)
o
SCS Computing Facilities
§
CMU Robotics Institute VASC
§
CMU Robotics Seminar
Quotes
A quotation from Yan-Xi-Shan (unrelated to
Yan-Xi Liu) 
---
Frank Zappa, The Real Frank Zappa Book
