Active Contours in Image Processing and Computer Vision
Dr. Tony Yezzi
Date: Wednesday, September 26, 2007 at 12:00 PM
Room: PARB 126
Abstract
Ever since the inception of the original "Snakes" algorithm by Kass, Witkin, and Terzopoulos, various forms of active contours have become a major forefront of research in image processing and computer vision. In this talk, we will partially trace the development of active contours from older simpler models to more recent complex models with a special emphasis on active contour models derived from the Calculus of Variations. We will conclude with a new set of active contour models based on Sobolev gradients. Throughout the talk we will demonstrate the application of active contours, and their 3D counterparts (active surfaces), on a variety of problems ranging from medical image segmentation, multiview stereo 3D surface reconstruction, image registration, and visual tracking.
Presenter Bio
Professor Yezzi was born in Gainsville, Florida and grew up in Minneapolis, Minnesota. He obtained both his Bachelor's degree and his Ph.D. in the Department of Electrical Engineering at the University of Minnesota with minors in mathematics and music. After completing his Ph.D., he continued his research as a post-Doctoral Research Associate at the Laboratory for Information and Decision Systems at Massachusetts Institute of Technology in Boston, MA. His research interests fall broadly within the fields of image processing and computer vision. In particular he is interested in curve and surface evolution theory and partial differential equation techniques as they apply to topics within these fields (such as segmentation, image smoothing and enhancement, optical flow, stereo disparity, shape from shading, object recognition, and visual tracking). Much of Dr. Yezzi's work is particularly tailored to problems in medical imaging, including cardiac ultrasound, MRI, and CT. He joined the Georgia Tech faculty in the fall of 1999 where he has taught courses in DSP and is working to develop advanced courses in computer vision and medical image processing. Professor Yezzi consults with industry in the areas of visual inspection and medical imaging. His hobbies include classical guitar, opera, and martial arts.
