Tensor Driven Diffusion Flows

[Royi]

First of all, your site is amazing.
I'd be happy if you shed more information on math aspect of things (For instance how does the Fast Marching algorithm solve the "Redistancing" needed in the Active Contours and is it required at all, why mathematically the level set becomes "Blurred") yet still this is a great information source.

Anyhow, I read the book on "Tensor Driven Diffusion Flows".
I remember David Tschumperlé's article, Fast Anisotropic Smoothing of Multi-Valued Images using Curvature-Preserving PDE's, which is very similar.

What's the innovation in David's work?
Could it be implemented in tour notebook?

Sharing your great knowledge is amazing, thank you for that.