Fall 1996 to Hong Kong University of Science & Technology (HKUST)

Sep 2000 PhD Degree in Computer Science

PhD Thesis: Analysis of Spatio-temporal Slices for Video Content Representation

July 1994 to Nanyang Technological University, Singapore

March 1996 Master Degree in Applied Science (Computer Engineering)

Master Thesis: Tracking with Generalized Active Contour Model

July 1990 to Nanyang Technological University, Singapore

May 1994 Bachelor Degree in Applied Science (Honour)

Professional Experience

Jan 2001 to University of Illinois at Urbana Champaign (UIUC)

Present Hong Kong University of Science & Technology (HKUST)

Research associate in HKUST and post-doc in UIUC

Research experience:

· Propose and develop digital video processing system for on-line distance learning (a collaborative project between UIUC and HKUST).

· Develop and implement multimedia information retrieval system in Nansha Information Technology Park.

Fall 1996 to Hong Kong University of Science & Technology

Dec 2000 Research and teaching assistant in the Department of Computer Science

Research experience:

· Propose slice-based video partitioning algorithms, including camera cut, wipe and dissolve detection methods

· Propose motion characterization and segmentation algorithms.

· Propose motion-based video representation techniques for scene change detection.

· Propose motion retrieval algorithms for sport video database

· Propose hierarchical clustering and retrieval approaches for soccer and basketball video database through motion and color features.

· Investigate and study the effectiveness and efficiency of employing DCT coefficients for the content-based color, shape and texture retrieval.

· Develop and implement web-based multimedia digital library (MMLib) http://mmlib.cs.ust.hk/

Summer 1999 Microsoft Research China

Summer intern in the Media Computing Group

Research experience:

· Propose slice-based motion characterization algorithms for long video sequence analysis.

· Propose works on video representation, shot similarity measure and video highlight detection.

April 1999 NLPR at the Automation Institute of CAS, PRC

Visiting student in Image Processing Group

Research experience:

· Cooperation research on content-based video/image indexing

April 1996 to Information Technology Institute, Singapore

Sep 1996 (Merged with ISS as Kent Ridge Digital Labs after 1998)

Research staff in the Information Retrieval Group

Research experience:

· Participate in the algorithm design of iAgent multilingual information retrieval system.

· Develop algorithms in information indexing, routing and filtering for both English and Chinese text retrieval.

· Participate in TREC-5 International Conference and rank 3^rd in the competition of Chinese text routing.

July 1994 to Nanyang Technological University, Singapore

March 1996 Research and teaching assistant in Computer Engineering Department

Research experience:

· Propose object tracking algorithms based on the generalized active contour model (GSNAKE).

· Develop GSNAKE API version 1.0 that provides tools for contour modeling, extraction, detection and classification. The API is available at the computer vision home page: http://www.cs.cmu.edu/afs/cs/project/cil/ftp/html/v-source.html

Award

1996 to 2000 HKUST studentship

1997 Pacific Bechtel Corporation scholarship

1996 3^rd prize for Chinese text routing in TREC-5 International Conference

Professional Activities

Reviewer IEEE Transactions on Circuits and Systems for Video Technology

Asian Conference of Computer Vision (ACCV)

Technical Skill

Programming Visual C++, C++, C, MatLab, CGI, HTML, Prolog

Platform OS Unix, Linux, MS-Windows, MS-DOS

Knowledge JPEG & MPEG, Oracle SQL

Selected Publication

Thesis

C. W. Ngo, Analysis of Spatio-temporal Slices for Video Content Representation, PhD Thesis, Department of Computer Science, The Hong Kong University of Science & Technology, 2000.
C. W. Ngo, Tracking with Generalized Active Contour Models, MSc Thesis, Department of Computer Engineering, Nanyang Technological University, 1996.

Journal Paper

C. W. Ngo, T. C. Pong & H. J. Zhang, “Motion-based Video Representation for Scene Change Detection,” International Journal of Computer Vision, 2001, accepted.
C. W. Ngo, T. C. Pong & R. T. Chin, “Video Partitioning through Temporal Slices Analysis”, IEEE Trans. on Circuits and Systems for Video Technology, vol. 11, no. 8, pp. 941-953, August, 2001.
C. W. Ngo, T. C. Pong, H. J. Zhang, “Motion Analysis and Segmentation through Spatio-temporal Slices Processing”, IEEE Trans. on Image Processing, 2000, (under revision).
C. W. Ngo, T. C. Pong & H. J. Zhang, “On Clustering and Retrieval of Video Shots through Temporal Slices Analysis”, submitted to IEEE Trans. On Multimedia, 2001.
C. W. Ngo, H. J. Zhang & T. C. Pong, “Recent Advances in Content Based Video Analysis,” International Journal of Image and Graphic, 2001, accepted.
C. W. Ngo, T. C. Pong, C. W. Ngo, T. C. Pong, R. T. Chin, “Exploiting Image Indexing Technique in DCT Domain”, Pattern Recognition, vol. 34, no. 9, pp. 1841-1851, Sep, 2001.
S. Chan, C. W. Ngo & Kok F. Lai, “Motion Tracking of Human Mouth by Generalized Deformable Models”, Pattern Recognition Letters, pp. 879-887, 1999.

Conference Paper

Image & Video Indexing

C. W. Ngo, T. C. Pong, H. J. Zhang & R. T. Chin, “On Clustering and Retrieval of Video Shots”, ACM Multimedia Modeling (MM’01), 2001, to appear.
T. Lin, C. W. Ngo, H. J. Zhang, Q. Y. Shi, “Integrating Color and Spatial Features for Content-based Video Retrieval’’, Int. Conf. on Image Processing, 2001.
C. W. Ngo, T. C. Pong, H. J. Zhang & R. T. Chin, “Motion Characterization by Temporal Slice Analysis,” Computer Vision and Pattern Recognition (CVPR’00), Vol. 2, pp. 768-773, 2000.
C. W. Ngo, T. C. Pong, R. T. Chin & H. J. Zhang, “Motion-based Video Representation for Scene Change Detection,” Int. Conf. of Pattern Recognition (ICPR’00), Vol. 1, pp. 827-830, 2000.
C. W. Ngo, T. C. Pong & R. T. Chin, “A Robust Wipe Detection Algorithm”, Asian Conference on Computer Vision (ACCV’00), Vol. 1, pp. 246-51, 2000.
C. W. Ngo, T. C. Pong & R. T. Chin, “Detection of Gradual Transitions through Temporal Slice Analysis”, Computer Vision and Pattern Recognition (CVPR’99), 1999, vol.1, pp. 36-41.
C. W. Ngo, T. C. Pong & R. T. Chin, “Camera Breaks Detection by Partitioning of 2D Spatio-temporal Images in MPEG Domain”, IEEE Multimedia Systems (ICMCS'99), 1999, vol. 1, pp. 750-755.
C. W. Ngo, T. C. Pong, C. W. Ngo, T. C. Pong, R. T. Chin, “Exploiting Image Indexing Technique in DCT Domain”, International Workshop on Multimedia Information Analysis & Retrieval, pp. 195-206, 1998.

Motion Tracking

Kok F. Lai, C. W. Ngo & S. Chan, “Tracking of Deformable Contours by Synthesis and Match”, Int. Conf. Pattern Recognition (ICPR), Vol. 1, 1996, pp. 657-661.
C. W. Ngo, S. Chan & Kok F. Lai, “Motion Tracking and Analysis of Deformable Objects by Generalized Active Contour Model”, Second Asian Conference on Computer Vision (ACCV), 1995, pp. 3:442-446.
C. W. Ngo, S. Chan & Kok F. Lai, “Application of Generalized Active Contour Model for Model-Based Image Coding”, Multimedia Modeling, 1995, pp. 323-337.

Information Retrieval

· C. W. Ngo & Kok F. Lai, “Experiments on Routing, Filtering and Chinese Text Retrieval in TREC-5”, Text REtrieval Conference (TREC-5), 1997, pp. 247-55.