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Xu, Xun (Jason)

Research Assistant, Ph.D. Candidate
Dept. of Electrical and Computer Engineering
University of Illinois at Urbana-Champaign

Contact Information

xunxu at uiuc.edu
xunxu at ifp.uiuc.edu
http://www.ifp.uiuc.edu/~xunxu/

2323 Beckman Institute
405 N. Mathews Ave.
Urbana, IL 61801

Phone: (217) 244-2960
Fax: (217) 244-8371

Research Interests

  • Computer Vision
  • Machine Learning and Pattern Recognition
  • Image and Video Processing
  • Computer Graphics
  • Human-Computer Interaction
  • Artificial Intelligence

Education

Aug. 2003 ~ Present

Doctor of Philosophy (Ph.D.), Candidate
Computer Engineering
Advisor: Prof. Thomas S. Huang
GPA: 3.96 / 4.0
Department of Electrical and Computer Engineering
University of Illinois at Urbana-Champaign
Urbana, IL, USA

Sep. 2000 ~ Jun. 2003

Master of Science (M.Sc.)
Pattern Recognition and Intelligent Systems
National Laboratory of Intelligent Technology and Systems
Tsinghua University
Beijing, China

Sep. 1996 ~ Jul. 2000

Bachelor of Engineering (B.Eng.)
Automatic Control
Department of Automation
School of Information Science and Technology
Tsinghua University
Beijing, China

Research Experience

Aug. 2003 ~ Present

Research Assistant
Image Formation and Processing Group
Beckman Institute
University of Illinois at Urbana-Champaign
Urbana, IL, USA
Major Projects: Face recognition, soft-biometrics, 3D face analysis and synthesis
Advisor: Prof. Thomas S. Huang

May 2008 ~ Aug. 2008

Software Engineering Intern
Video Content Analysis Group
Google Inc.
Mountain View, CA, USA
Project: Fast content-based image retrieval
Mentors: Ruei-Sung Lin, Jay Yagnik

May 2005 ~ Aug. 2005

Research Intern
Communication and Collaboration Systems Group
Microsoft Research
Redmond, WA, USA
Project: Multiparty voice conferencing over Internet
Mentors: Li-wei He, Dinei Florêncio, Yong Rui

Sep. 2000 ~ Jun. 2003

Research Assistant
National Laboratory of Intelligent Technology and Systems
Tsinghua University
Beijing, China
Major Projects: Face analysis and synthesis with morphable model, 3D face reconstruction
Advisor: Prof. Changshui Zhang

Mar. 2002 ~ Aug. 2002

Visiting Student (Research Intern)
Multimodal User Interface Group
Microsoft Research Asia
Beijing, China
Projects: On-line understanding of hand-drawn objects, esp. flowchart recognition
Supervisor: Jian Wang

Sep. 1999 ~ Jun. 2000

Undergraduate Research Assistant
National Laboratory of Intelligent Technology and Systems
Tsinghua University
Beijing, China
Supervisor: Prof. Changshui Zhang

Teaching Experience

Feb. 2008, Apr. 2007, Feb. 2005

Guest Lecturer
Multimedia Signal Processing, by Prof. Thomas S. Huang
UIUC
Urbana, IL, USA

May 2004

Guest Lecturer
Machine Learning Methods in Computer Vision, Lecture series in Tsinghua Univ., by Prof. Thomas S. Huang
Tsinghua University
Beijing, China

Feb. 2001 ~ Jun. 2001

Teaching Assistant
Pattern Recognition, by Prof. Changshui Zhang
Tsinghua University
Beijing, China

Programming Skills

  • Proficient programmer of C/C++ and MATLAB.
  • Experienced user of following libraries and softwares:
    • Computer Vision/Imaging/Graphics: Intel OpenCV & IPL, OpenGL, SDL, DirectX, Microsoft Vision SDK
    • Scientific Computing: MATLAB, LAPACK, uBLAS, MTL, Intel IPP
    • General Libraries: STL, Boost, MFC, wxWidgets
    • Compilers, IDEs and Tools: Microsoft Visual C++ , GNU C/C++ , Eclipse, Code::Blocks, CMake, Doxygen
  • Other languages used: Java, JavaScript, Python, Perl, Visual Basic, Assembly languages (Intel x86, 8051/98)
  • Web development: PHP, HTML, CSS, Apache

Selected Courses

Aug. 2003 - present (UIUC)

  • Static and Dynamic Game Theory, A
  • Optimization by Vector Space Methods (w/ Functional Analysis), A+
  • Advanced Digital Signal Processing, A+
  • Computer Vision, A+
  • Control System Theory and Design, A+
  • Advanced Topics in Image Processing, A+
  • Random Processes, A-
  • Fundamentals of Engineering Acoustics, A

Before 2003 (Tsinghua University, graduate level)

  • Pattern Recognition
  • Computer Graphics
  • Modern Signal Processing
  • Joint Time-Frequency Analysis and Wavelets

Academic Honors

  • Computational Science and Engineering Fellowship, UIUC, 2006-2007
  • Excellent Graduate of Tsinghua University, 2000
  • Successful Participant, International Mathematical Contest in Modeling (sponsored by COMAP), 2000
  • Winner (1st Prize), The 6th Mathematical Contest in Modeling of Tsinghua University, 1999
  • Guanghua Scholarship, Tsinghua University, 1999
  • Excellent Student Scholarship, Tsinghua University, 1997 and 1998
  • Tsinghua-Holison Scholarship, Tsinghua University, 1996

Patents

  • “System and Method for Shape Recognition of Hand-drawn Objects”, coinvented with Yantao Li, Zhouchen Lin and Jian Wang. (US Patent 7,324,691; European Patent Appl. No. 04019840.0; Microsoft Ref. No. 306517.05)
  • “Peer-Aware Ranking of Voice Streams”, coinvented with Li-wei He and Dinei A. Florêncio. Filed in Mar. 2006.

Professional Activity

  • Student Member (since 2000), IEEE Computer Society
  • Reviewer: IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR 2007), International Conference on Image and Video Retrieval (CIVR 2006), International Conference on Multimodal Interfaces (ICMI 2004)
  • Reviewer: Computer Vision and Image Understanding, Pattern Recognition, Acta Automatica Sinica, National Natural Science Foundation of China (NNSFC)

Publications

  • X. Xu and T. S. Huang, "A Loopy Belief Propagation Approach for Robust Background Estimation," in Proc. 2008 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR 2008), Anchorage, Alaska, 2008, (acceptance rate 31.9%)
  • Y. Hu, Z. Zhang, X. Xu, Y. Fu, and T. S. Huang, "Building Large Scale 3D Face Database for Face Analysis," in Proc. MCAM 2007: International Workshop on Multimedia Content Analysis and Mining, Weihai, China, 2007, pp. 343–350.
  • M. Liu, X. Xu, and T. S. Huang, "Audio-Visual Gender Recognition," in Proc. MIPPR'07: The Fourth International Symposium on Multispectral Image Processing and Pattern Recognition, Wuhan, China, 2007, (invited paper)
  • X. Xu and T. S. Huang, "SODA-Boosting and Its Application to Gender Recognition," in Proc. LNCS 4778: 2007 IEEE International Workshop on Analysis and Modeling of Faces and Gestures (AMFG), in conjunction with ICCV, Rio de Janeiro, Brazil, 2007, pp. 193–204. (oral presentation, acceptance rate 15%)
  • X. Xu, L. He, D. Florêncio, and Y. Rui, "PASS: Peer-Aware Silence Suppression for Internet Voice Conferences," in Proc. 2006 IEEE International Conference on Multimedia & Expo (ICME 2006), 2006, (oral presentation, acceptance rate 22%)
  • J. Tu, A. Ivanovic, X. Xu, F. Li, and T. S. Huang, "Variational Shift Invariant Probabilistic PCA for Face Recognition," in Proc. 18th International Conference on Pattern Recognition (ICPR 2006), 2006,
  • X. Xu, Y. Rui, and T. S. Huang, "Recognizing Faces in Recorded Meetings via MRC-Boosting," in Proc. 2006 IEEE International Conference on Multimedia & Expo (ICME 2006), 2006, (oral presentation, acceptance rate 22%)
  • Z. Zhang, X. Xu, and T. S. Huang, "Indecisive Classifier," in Proc. 2005 IEEE International Conference on Multimedia & Expo (ICME 2005), 2005,
  • X. Xu and T. S. Huang, "Face Recognition with MRC-Boosting," in Proc. 10th IEEE International Conference on Computer Vision (ICCV 2005), 2005, pp. 1770–1777. (acceptance rate 20.4%)
  • X. Xu, C. Zhang, and T. S. Huang, "Active Morphable Model: An Efficient Method for Face Analysis," in Proc. Sixth IEEE International Conference on Automatic Face and Gesture Recognition (FGR 2004), 2004, pp. 837–842. (oral presentation, acceptance rate 15.6%)
  • X. Xu, Z. Lin, Y. Li, and C. Zhang, "Robust Flowchart Understanding for Pen-based User Interface," in preparation, 2003.
  • X. Xu, "Active Morphable Model for the Analysis and Synthesis of Human Faces (In Chinese)," Master's thesis, 2003.
  • X. Xu and C. Zhang, "Multi-agent Developmental Model of Plants," in Proc. 7th Conference on Artificial Life and Robotics (AROB'02), 2002,
  • X. Xu, "A Computer Login System Based on Face and Fingerprint Recognition (In Chinese)," Bachelor's thesis, 2000.