Conformal Curve Smoothing with Laplacian Filter
This implementaion is based on Keenan Crane's source code for Spin Transformations of Discrete Surfaces
The main modification is the addition of a high-pass Laplacian filter.
Without a Laplacian filter, conformal curvature flow shrinks large features at the same rate as small bumps.
With a high-pass filter on the flow direction, we can shrink small bumps while preserving large features.
To see a more detailed technical explanation, please refer to my presentation slides (slides.pdf).
For documentation of Keenan's original package, see doc/libddg_userguide.pdf