// HomotopicMarking
// G. Landini 10 May 2009
// Homotopic marking deletes all points in a 
// skeleton but preserves the last single point or loops.

run("BinaryThin2 ", "kernel_a=[2 1 2 0 1 0 0 0 0 ] kernel_b=[0 0 0 1 1 1 1 1 1 ] rotations=[rotate 45] iterations=-1 white");