Wallapak Tavanapong
Associate Professor

Office: 232 Atanasoff Phone: (515) 294-2987 Fax: (515) 294-0258 Email: tavanapo@cs.iastate.edu Homepage: http://www.cs.iastate.edu/~tavanapo/

Current Affiliations

• Computer Science Department, Iowa State University
• Computational Intelligence, Learning, and Discovery Center (CCILD)

Research Interests

Content analysis on medical images and videos; multimedia and databases; multimedia and communications; query processing on mobile adhoc networks; sensor networks; distributed systems;

Research Areas

Multimedia Systems, Database Systems, Distributed Computing and Networks

Education

Ph.D.   University of Central Florida   1999
M.S.   University of Central Florida   1995
B.S.   Thammasat University, Thailand   1992

Honors and Awards

LAS Early Achievement in Research Award 2008  LAS, ISU, 2008

NSF Career Award  NSF, 2001-2006

Current Grants

Improving Colonoscopy Quality through Automated Monitoring. Piet de Groen (PI), Wallapak Tavanapong, Johnny Wong. Agency for Healthcare for Research and Quality (2008-2011). $254,675.

Evaluation of Quality Assessment Tools for Colonoscopy. Johnny Wong (PI) and Wallapak Tavanapong. Grow Iowa Values Fund (GIVF) (2007-2009). $100,397.

Representative Publications

Refereed Journal and Conference Publications

D. Liu, Y. Cao, K. Kim, S. Stanek, B. Doungratanaex-chai, K. Lin, W. Tavanapong, J. Wong, J. Oh, and P. C. de Groen. Arthemis: Annotation Software in an Integrated Capturing and Analysis System for Colonoscopy. Computer Methods and Programs in Biomedicine. Vol. 88. No. 2. pp. 152-163.

Y. Wang, W. Tavanapong, J. Wong, J. Oh, and P. C. de Groen. Edge Cross-Section Features for Detection of Appendiceal Orifice Appearance in Colonoscopy Videos. International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Vancouver, British Columbia, Canada. pp. 3000-3003, 2008.

S. Hwang, J. Oh, W. Tavanapong, J. Wong, J. Oh, and P. C. de Groen. Stool Detection in Colonoscopy Videos. International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Vancouver, British Columbia, Canada. pp. 3004-3007, 2008.

Kihwan Kim, Ying Cai, Wallapak Tavanapong. Safe Time: Distributed Real-time Monitoring of cKNN in Mobile Peer-to-Peer Networks. Mobile Data Management, Beijing China, 2008.

1. S. Stanek, W. Tavanapong, J. Wong, J. Oh, and P. C. de Groen. Automatic Real-Time Capture and Segmentation of Endoscopy Video. SPIE Medical Imaging, San Diego. Vol. 6919. pp. 69190X-69190X-10, 2008.

J. Oh, S. Hwang, Y. Cao, W. Tavanapong, J. Wong, and P. C. de Groen. Measuring Objective Quality of Colonoscopy. Accepted to appear in IEEE Transactions on Biomedical Engineering. Measuring Objective Quality of Colonoscopy. IEEE Transactions on Biomedical Engineering, Accepted, 2008.

W. Putthividhya, A. Ghosh, and W. Tavanapong. Modeling of End-to-End Available Bandwidth in Wide Area Network. Int’l Symposium on Parallel and Distributed Processing with Applications, Sydney, Australia, 2008.

3. S. Hwang, J. Oh, W. Tavanapong, J. Wong, and P. C. de Groen. Polyp Detection in Colonoscopy Video Using Elliptical Shape Feature. IEEE Int'l Conf. on Image Processing, San Antonio, Texas,, 2007.

3. D. Liu, Y. Cao. W. Tavanapong, J. Wong, J. Oh, and P. C. de Groen, Quadrant Coverage Histogram. A New Method for Measuring Quality of Colonoscopy Procedures. IEEE EMBC 2007, Lyon, France, 2007.

Y. Cao, D. Liu, W. Tavanapong, J. Wong, J. Oh, and P. C. de Groen. Computer-aided Detection of Diagnostic and Therapeutic Operations in Colonoscopy Videos. IEEE Transactions on Biomedical Engineering. Vol. 54. No. 7. pp. 1268-1279, 2007.

S. Hwang, J. Oh, J. Lee, W. Tavanapong, P. C. de Groen, and J. Wong. Informative Frame Classification for Endoscopy Video. Medical Image Analysis. Vol. 11. No. 2. pp. 110-127, 2007.

D. Liu, Y. Cao. W. Tavanapong, J. Wong, J. Oh, and P. C. de Groen. Mining Colonoscopy Videos to Measure Quality of Colonoscopic Procedures. IASTED Int'l Conf. on Biomedical Engineering, 2007., Innsbruck, Austria, 2007.

6. S. Hwang, J. Oh, W. Tavanapong, P. C. de Groen, and J. Wong. Automatic Polyp Segmentation for Colonoscopy Image using Watershed Algorithm and Ellipse Fitting Method. SPIE Medical Imaging, San Diego, CA, 2007.

Minh Tran and Wallapak Tavanapong. On the Design, Analysis, and Implementation of a Periodic Broadcast Server. IEEE Transactions on Broadcasting. Vol. 52. No. 4. pp. 515-528, 2006.

S. Shetty, P. Galdames, W. Tavanapong, and Y. Cai. Detecting Malicious Peers in Overlay Multicast Streaming. Proc. of IEEE Conf. on Local Area Networks (LCN), Florida, USA, 2006.

Y. Cao, D. Liu, W. Tavanapong, J. Wong, J. Oh, and P. C. de Groen. Automatic Classification of Images with Appendiceal Orifice in Colonoscopy Videos. In Proc. of IEEE Engineering in Medicine and Biology Conference, New York City, New York. pp. 2349-2352, 2006.

S. Sheu, W. Tavanapong, and K. A. Hua. A Scalable Cost Effective Video Broadcasting System for On-Demand Video Services. Journal of Multimedia Tools and Applications, Springer-Verlag. Vol. 8. No. 3. pp. 321-345, 2006.

Minh Tran and Wallapak Tavanapong. Peer-assisted Content Distribution Networks. IEEE Local Computer Networks, Australia, 2005.

. Hwang, J. Oh, J. Lee, P. C. de Groen, Y. Cao, W. Tavanapong, D. Liu, and J. Wong. Automatic Measurement of Quality Metrics for Colonoscopy Videos. ACM Multimedia, Singapore, 2005.

Minh Tran and Wallapak Tavanapong. On Using a CDN's Infrastructure to Improve File Transfer Among Peers. Int’l Conf. on Management of Multimedia Networks and Services (MMNS) 2005, Barcelona, Spain, 2005.

Ying Cai, Zhan Chen, Wallapak Tavanapong. Video Management in Peer-to-Peer Systems. IEEE International Conference on Peer-to-Peer Computing, Germany, 2005.

Y.-H. An, S. Hwang, J. Oh, W. Tavanapong, P. C. de Groen, J. Wong, and JeongKyu Lee. Informative Frame Filtering in Endoscopy Videos. SPIE Medical Imaging, San Diego, CA, USA, 2005.

Y. Cao, D. Li, W. Tavanapong, J. Wong, J. Oh, and P. C. de Groen. Parsing and Browsing Tools for Colonoscopy videos. Proc. of ACM Multimedia. pp. 844-851, 2004.

K. A. Hua, M. A. Tantaoui, W. Tavanapong. Video Delivery Technologies for Large-Scale Deployment of Multimedia Applications. Proceedings of the IEEE. Vol. 92. No. 9. pp. 1439-1451, 2004.

M. Tran, W. Tavanapong, W. Putthividhya. OCS: An Effective Caching Scheme for Video Streaming on Overlay Networks. Journal of Multimedia Tools and Applications, Accepted, 2004.

JungHwan Oh, Sae Hwang, Wallapak Tavanapong, Piet C. de Groen, and Johnny Wong. Blurry Frame Detection and Shot Segmentation for Colonoscopy Videos. Proc. of SPIE Conf. on Storage and Retrieval, San Jose, CA, USA. pp. 531-542, 2004.

W. Tavanapong and J. Zhou. Shot Clustering Techniques for Story Browsing. IEEE Transactions on Multimedia. Vol. 6. No. 4. pp. 517-527, Accepted, 2004.

K. Vu, K. A. Hua, and W. Tavanapong. Image Retrieval Based on Region of Interest. IEEE Transactions on Knowledge and Data Engineering, 2003.

M. Tran and W. Tavanapong. Overlay Caching Schemes for Overlay Networks. Proc. of SPIE/ACM Multimedia Computing and Networking, San Jose, CA, USA. pp. 150-161, 2003.

W. Tavanapong and K. A. Hua. Design and Implementation of a Video Browsing System for the Internet. Journal of Software: Practice and Experience. Vol. 31. No. 5. pp. 471-503, 2001.

K. A. Hua, W. Tavanapong, and J. Z. Wang. 2PSM: An Efficient Framework for Searching Video Information in a Limited Bandwidth Environment. ACM Multimedia System, Springer-Verlag. Vol. 7. No. 5. pp. 396-408, 1999.

K. A. Hua, W. Tavanapong, and Y. Lo. Performance of Load Balancing Techniques for Join Operations in Shared-nothing Database Management Systems. Journal of Parallel and Distributed Computing. Vol. 56. pp. 17-46, 1999.

W. Tavanapong, K. A. Hua, and J. Z. Wang. A Framework for Supporting Previewing and VCR Operations in a Low Bandwidth Environment. Proc. of ACM Multimedia'97, Seattle, WA, USA. pp. 303-312, 1997.

S. Sheu, K. A. Hua, and W. Tavanapong. Chaining: A Generalized Batching Technique for Video-on-Demand Systems. Proc. of IEEE Int'l Conf. on Multimedia Computing and Systems, Ottawa, Canada. pp. 110-117, 1997.

K. A. Hua, W. Tavanapong, and H. Young. Performance Evaluation of Load Balancing Techniques for Multicomputer Database Systems. Proc. of the Int'l Conf. on Data Engineering, Taipei, Taiwan. pp. 44-51, 1995.