: Weighted Voronoi Stippling

Stippling is the creation of a pattern simulating shading by using small dots. Such a pattern may occur in nature and these effects are frequency emulated by artists[1]. Adrian Secord first outlined a method of algorithmically generating the stippling pattern in his 2002 NPAR paper entitled “Weighted Voronoi Stippling”. The application presented below is an independent implementation of the ideas of the NPAR paper. This was originally done as a university assignment for Professor Craig S. Kaplan, but has since been fine tined, sped up, corrected, and generally speaking changed beyond recognition. For a more technical take on this tool, please refer to the technical whitepaper.



Full documentation for the command line arguments are available here.

Image Gallery



“Klaymen” by ~LuigiL

This image has multiple tones as a result of the interplay between the shadows and hilights on the character’s body.



Fairy Eyes

A “Black and White” image with varying tone values and sharp details in some areas (the woman’s hair).
Note how the tonal changes in the woman’s hair have been captured by the algorithm.
With 28000 stipples the high amount of detail in the woman’s hair has been captured almost completely.