Maximizing average gradient [G.sub.A] obtains more accurate contour
and avoids oversegmentation.
Because the mean information of Chan-Vese model is very sensitive to inhomogeneity image, it fails to extract the accurate contour
. The LBF model is better than Chan-Vese model, but it gets many iterations and it is very sensitive to initial value.
Geological Survey (www.usgs.gov) topographical maps give you a virtual aerial view via accurate contour
With the availability of more current, more accurate contour
data (derived from LIDAR), members of the Partnering Group are now updating these ESA data sets.
The pen displays deliver accurate contoured
images, delineating target volumes for radiation therapy.