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EG-2012

Irene Cheng, PhD

Adjunct Professor & Research Associate

Science

Computing Science

About Me

Education

  • Post Doc, Computer and Information Science (CIS), University of Pennsylvania, 2007
  • Ph.D., Computing Science, University of Alberta, 2005
  • M.Sc., Computing Science, University of Alberta, 1999
  • B.Sc., Computing Science, University of Alberta, 1996

Additional Positions

  • Scientific Director, Multimedia Research Centre 
  • Director, Masters with Specialization in Multimedia Program
  • Research Affiliate, Glenrose Rehabilitation Hospital

Research

Areas

Computer Graphics
Computer Vision and Multimedia Communications

Interests

My research interests include multimedia data transmission and Quality of Experience (QoE), mesh simplification and Levels-of-Detail, 3DTV, 3D textured mesh visualization, image processing and adaptive learning/assessment. I introduced the concept of Just-Noticeable-Difference (JND) and Relative Change on 3D TexMesh in the scale-space domain - validated following psychophysical two-alternative-choice methodology.

Summary

My research focus is on the analysis of multimedia patterns and their human perceptual impacts on real-world applications, e.g., animation, education, surveillance and healthcare. My techniques are built upon mathematical formulations like Random-Walks, Set Partitioning in Hierarchical Tree (SPIHT), Conditional Random Field (CRF), Scale-Space Filtering and Just-Noticeable-Difference (JND). Recent projects include: Improved automatic multi-exposure image fusion and correspondence; introduced perceptually enhanced techniques for automatic segmentation using visual cues and for enhancing medical or photographic image quality; motion capture data compression and transmission; multi-object tracking. The Computer Reinforced Online Multimedia Education (CROME) framework, which focused on adaptive learning/assessment, was designed and prototyped during the period from 2006-2012.