What is the technical difference between conformal and angle-based unwrapping? When unwrapping an object, there are two options for the Method to use: Conformal, and Angle Based.  What is the technical difference between these two methods?



I usually leave it at Angle Based, but sometimes that distorts tight geometry and I switch to conformal.  So basically I just blindly see which looks better project by project, I am interested in how they work.

Note: I am aware of this question and answer, but that more addresses the use of the two methods, I am looking for the technical difference.
Conformal
Uses LSCM (Least Squared Conformal Mapping). This usually gives a less accurate UV mapping than Angle Based, but works better for simpler objects.
(As describled by blender user manual)

Attached is the link to the White paper on LSCM

http://www.cs.jhu.edu/~misha/Fall09/Levy02.pdf
http://alice.loria.fr/publications/papers/2002/lscm/lscm.pdf