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, University of Pittsburgh

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, Huazhong University of Science and Technology, China.

 


Address and Phone Numbers

Dr. Yanxi Liu
338B IST Building
University Park, PA 16802

Office: (814) 865-7495
Email: yanxi ATsign cse.psu.edu

What's new

 

-- Faculty Spotlight of January 2010 Newsletter, PSU, College of Engineering, Department of Electrical Engineering

-- Distinguished speaker for the School of Computing, Queens University (November, 2009)

-- 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. July 2009.

-- 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 (May 2009)

-- 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. Syllabus from Fall 2008.

* 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) youtube: TechTalks at Google

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!

Tartan article on Dr. Liu's Alzheimer's Disease project (in collaboration with the Alzheimer's Disease Research Center of University of Pittsburgh)

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]

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).

 

* 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 (3rd year Ph.D. candidate, CSE/PSU) co-advising with Dr. Collins

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

Lin, Wen-Chieh (Ph.D.) CMU RI (June 2003 -- January 2006). Currently: Assistant Professor at National Chiao-Tung University.

Zhang, Jiayong (Ph.D.) CMU RI May 2006, Neven Vision, Inc. (2002 -- 2006, Co-advised with Dr. Collins)

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


FUN

 

 Taiji

Taiji Performance at the Central PA Festival of the Arts (July 12, 2009)

PSU Taiji Club

 

Jazzy's painting and music

 

 Jazzy's art gallery (copyright reserved)