Noise Removal from Images
Library Home || Full Table of Contents || Suggest a Link || Library Help
|J. A. Sethian|
|A paper and movie on noise removal. Level Set Methods exploit the fact that curves moving under their curvature smooth out and disappear. The idea is to view the pixel values as a topographic map; the intensity (somewhere between white and black) at each pixel is the height of the surface at that point. Suppose we then let each contour undergo motion by curvature. Then very small contours, corresponding to spikes of noise, will disappear quickly. Better yet, the boundaries will remain sharp, since they will not blur under this motion, and instead only move according to their curvature....|
|Resource Types:||Video, Articles|
|Math Topics:||Differential Geometry|
© 1994-2014 Drexel University. All rights reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.