So the edge and segmentation of these tools which we will be talking about involves identification of various primitive regions in the image, primitive regions being lowest level homogeneous regions of which the image is made. If you go down to the smaller sub-sets of pixels of the image which are homogeneous then those regions form the primitives.
So we will look at two such examples. One is magnetic lasso or intelligent scissors that already exist and the next one is segmentation based which is what we have developed.