public class Thin
extends Object

Thin lines preserving the Euler number using the thinning algorithm # 1 described in Guo, "Parallel Thinning with Two Subiteration Algorithms", Communications of the ACM, Vol 32 #3, page 359. The result generally preserves the lines in an image while eroding their thickness.

For example:

 1 1 1 1 1    1 1 1 1 1
 1 1 0 1 0    1 1 0 1 0
 1 1 1 1 0 -> 1 1 1 0 0
 1 1 0 1 0    1 0 0 1 0
 1 0 0 0 0    1 0 0 0 0
 

Notice that this implementation decides to returns the above result, instead of this following one, which is equivalently valid:

 1 1 1 1 1
 1 1 0 1 0
 1 1 1 1 0
 1 0 0 0 0
 1 0 0 0 0