Why doesn't temporal filter remove scratches/dirt on film?
Posted: Mon Aug 18, 2014 3:04 am
I'm converting (very) old 8mm film to digital. One common attribute of the film is that each frame tends to have small scratches or bits of deeply embedded dirt, that are unique to that frame.
I would have thought that temporal filtering could remove such artifacts, but it does not happen.
These artifacts are most obvious when they are high-contrast against otherwise smooth backgrounds.
Can you imagine why these would never be removed? Anything we could do about it?
Thanks,
Pete
I would have thought that temporal filtering could remove such artifacts, but it does not happen.
These artifacts are most obvious when they are high-contrast against otherwise smooth backgrounds.
Can you imagine why these would never be removed? Anything we could do about it?
Thanks,
Pete