**EDIT**
I now just tryed for myself to do a NeatImage Profile, by rendering a white Plane illuminated by a background with blackbody and 6500 temperature.
Now I started to creat a Profil of the result, and adjusted the Filter Preset
(the default one trade the RGB chanels different, optimized vor DigiCams,
also Indigo just produces high frequencie Noise)
Here are the Files:
Profile + Preset
** EDIT 2 **
You can find two Examples
HERE
(I hope you two guys have no Problem by using your stuff?!)
The Profile just reduces B&W Noise, not RGB Noise done bye Caustic & Dispersion!!!
I think it does the Job very well!
You are invited to test it with your Indigo Rendered Pictures ,
A conversation from PNG to TIFF is needed, because NI doesn't read PNG's
** EDIT 3 **
Don't use the "auto-fine-tune" & "auto-complete" options after loading the Profile, you get the best result keeping it default!!!
Please C&C!