Personal Project
Date : 2020
A Houdini setup based on the Aaron Hertzmann’s paper on painterly rendering.

Using COPs and vex in Houdini I recreated Hertzmann’s painting algorithm. The input image is blurred and points are trailed along the image’s gradient (calculated in vops); stopping when the colour change in the blurred image passes a threshold. Layers of these trails with different thresholds and blur sizes creates the final image.

Image gradient and base lines used to create the effect