Hole filling algorithm??


I’m trying to find a way to find and fill holes in a polygon mesh. I found this paper so far http://goo.gl/lRAkm

I’m totally confused by th algorithm to find holes. Can someone please refer me to a better paper or better yet — explain with pictures
all four steps of the algorithm

What does the following sentence mean in Layman’s terms:

Firstly, we use the topology connectivity of a watertight triangle mesh to detect the
undesired holes