A New Algorithm of Contour Detection in Gamma Knife Treatment Planning System
Xiaoyu Wang · Machine Tool & Hydraulics · 2004
In gamma knife treatment planning system, conto ur detection of the body surface, tumors and other tissues must be done precisely in order to provide intuitionistic reference grounds for three-dimensional recon struction. A new contour detection algorithm was introduced to replace the curre ntly predominantly used manual contour detection. This method was to close in up on the optimizing contour line on the basis of the initializing contour line. Be sides the differential information of the image gray level, the global feature o f the image contour was introduced to the process of edge detection so that edge detection and contour extraction could be integrated into one course and had hi gh precision of edge location.