We have created a couple of plugins for Paint.net which basically features extracted from MeeSoft Image Aalyzer.
Neural network based noise reduction filter for improving photos taken at high ISO values.
The Laplacian pyramid filter can be used to improve the overall illumination of photos, typically useful when part of the scene is in shadow.
It can also smooth or enhance details in a photo without smoothing edges or introduce halos.
This is a noise reduction filter for e.g. improving photos taken at high ISO values. It works by averaging similar texture patches to reduce noise and at the same time preserve edges and details.
This plugin can be used to add a texture effect to a photo.