Ok, i think i got it.
The graph in the attached screenshot does more or less what i'm expecting.
First, i subtract a sharpened version of the image from the image itself (i decided to work with negated sharpening instead of blurring, as the sharpen ofx plugin gives more freedom).
Then, i add the difference obtained from the previous nodes to the original image, with a 50% key to avoid overblurring.
- See zoomed for details.
- desharpen.jpg (812.97 KiB) Viewed 4150 times
By tuning the sharpen node parameters i can more or less fix the image.
Now i can create a compound node to group all this logic but... is it possible to publish inner node parameters? Or should i need to enter the compound node each time i want to tune it?
Moreover... is it possible to save the compound node for later use in other clips?
Thanks! Umberto