Like with sound, you can exaggerate or reduce certain frequencies (eigenvectors) of the geometry. This can be used to reduce or increase detail in certain areas, for a variety of distortion effects.
Thanks to @WhiteDo27114277 for his Eigenspace Projection example [drive.google.com]! I remade it in OpenCL for better performance.
Download here:
https://github.com/MysteryPancake/Houdini-Fun/blob/main/README.md#hda-laplacian-filter [github.com]