Is there software which will allow manipulating an image at different spatial scales? For example, change the contrast or brightness of features smaller than 50 px but larger than 10 px.
I have searched a bit about the topic, and I think one technique uses Gaussian or Laplacian pyramids (I didn't read in detail what they are). But right now I am not so much interested in the mathematical details of the technique, and I'd like to avoid understanding and implementing it myself. I'd like to know if there is software made for photo retouching that is reasonably fast and allows one to experiment in practice. "Unsharp mask" in Photoshop allows doing something similar, but it's limited in that it allows only one type of adjustment, and there's only one scale cutoff ("radius"). I'd like more control over selecting features with a given scale.