Freeform Vector Graphics Properties

As a follow up of my previous post, I tried to check the behavior of the FVG approach with respect to closed curves. More precisely, I want to see if it would be possible for an author to edit a complex image by editing closed regions of the image. This would simplify the editing. The problem is that the closed regions have to be independent. One doesn’t want the outside of a region to change when tweaking the inside. This is valid for simple diffusion curves proposed by Orzan as they are solution to the Laplace equation and this property is actually used for culling and fast rendering of diffusion curves (see “Diffusion curve textures for resolution independent texture mapping”, by Sun et al.). How true is this for FVG curves, especially given that the solution is not the solution of a Laplace equation but to complex energy minimization? Continue reading Freeform Vector Graphics Properties