Currently, there are two image denoising filters located in Core\Core\Algorithms. The total variation and the bilateral filter.
We have some more denoising filters in ToFProcessingMBI:
-adaptive bilateral, gauss, median, fast bilateral etc.
Furthermore, the module "ImageExtraction" is quite small.
Marcos suggestion is to create a module for "ImageToImage", name it ImageFiltering and move all those filters there.
Another possibility is to create a module just for "ImageDenoising" and keep "ImageExtraction".