How to read a picture (e.g. jpeg) and overlay it with a VoronoiMesh?

LS,
How to read a picture (e.g. jpeg) and overlay it with a VoronoiMesh?
Ideally the mesh follows the contours in the picture.
TIA!
Ronald

Maybe here is what you are looking for:

Documentation on Voronoi-Mesh and there under

Examples → Applications → Image Processing

Dear Hendrik, thx!