Is it right to call voxelization an approximation? What other descriptions are there?
I've struggled with understanding the purpose of voxelization, because different sources seem to describe it differently. Some associate it with filtering, segmenting, ...
I want to call it approximation similar to how e.g. continuous functions are approximated using simple functions. So in this sense I would say:
Voxelization is about approximating or giving an approximation to a more complex shape (e.g. a point cloud) that approximates its shape.
It's intuitive that the process also does filtering, because it discards information. It also does segmenting, because it creates "segmentation". Although since it loses information, then I'm not sure if segmenting is appropriate word.