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Old March 3rd 14, 04:16 AM posted to sci.engr.color,sci.image.processing,rec.photo.darkroom,rec.photo.digital,comp.soft-sys.matlab
Dale[_4_]
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Posts: 131
Default "look and feel" of film and ICC abstract profiles

On 03/02/2014 12:00 AM, Dale wrote:

to make an abstract profile or abstract profile editor, you could do it
two ways, mechanistically (hard way) or empirical (easy way)

mechanistic approaches involve knowledge of the characteristics of a
system that such manufacturers could share or license, developing this
information yourself would probably be too costly, for instance single
layer coatings of multi-layer films are necessary to resolve interimage
in film/chemical processes that include DIR or DIAR scavenger couplers
resulting in less interimage

empirical approaches work good enough in single stage systems, but multi
stage systems do not calibrate beyond a single color balance point using
a grey card and require editing, steady state calibration is a
prerequisite for any characterization

this leaves the mechanistic approach as preferred and the sharing and
licensing of necessary information, some proprietary, as film dies the
industry may be willing to deal, Kodak recently licensed something to IMAX

abstract profile editing using digital algorithms related to analog and
hybrid systems would ofcourse have to mechanistic


besides industry algorithms, you could use system development
techniques, and film building techniques as editing algorithms

unsharp masking is a film technique used in digital

--
Dale