I'm reading the Loper et al. 2015 paper on the Skinned Multi-Person Linear Model and I came across this:
What we would like is a vertex-based model that has the expressive power of the triangle deformation models so that it can capture a whole range of natural shapes and poses.
I'm not a Computer Science student, I'm actually a Physics student, so I only have an elementary understanding of these matters.
What is the difference between a triangle-based and a vertex-based skinning model? Why is the triangle-based one more "expressive"?