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The
unfortunate trade-off would be the resulting loss of
picture information, or resolution, because of the generational
loss from copying of the original to a positive element
to a duplicate negative. An acceptable loss, perhaps,
in a traditional sense, but not really desirable.
Scanning the damaged film into a digital file workstation
at a resolution adequate to caption the picture information
in the original element is an essential first step,
in this case a 4K scan for WATERFRONT, using Mac G4
workstations, running OS
X with Jaguar, and with LaCie FireWire 80GB hard drives,
utilizing software that supports a color depth of 16bits.
Most of this type of work is done adapting software
originally developed for the special effects industry
-- removing wires or props from a shot is similar to
removing a scratch. When a frame is torn or scratched,
the restoration team compares the damaged frames to
"clean" frames before or after the damaged
one, then copies over the clean frame or partial image
into the damaged frame, essentially erasing the damage.
It is important that any digitially-replaced shots or
sequences match-in with the surrounding original picture
so that the digital replacement is seamless and effectively
invisible to the viewer.
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