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"look and feel" of film and ICC abstract profiles



 
 
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  #1  
Old March 2nd 14, 05:00 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

when I worked at Kodak R&D they had something called QsubA which was an
analysis of the pleasure of an image as opposed to the accuracy, it went
beyond color reproduction and included image structure issues, I will
talk about color, it is extensible to image structure

certainly you have to start with accuracy to get a "more attractive"
design in systems

and I realize there is something called "good enough" that prevails over
accuracy and attractiveness when it involves things like more effort or
complexity

ICC has support for something called Abstract Profiles
http://www.color.org/faqs.xalter#p5

the "look and feel" of film still is preferred in some markets today,
there is even B&W films/chemicals in Kodak's motion picture catalog

you could put a base "look and feel" of a film system into an abstract
profile

to properly use things like chemical manipulation, you need algorithms
and and application to edit abstract profiles

abstract profiles can contain digital edits too

implementation of the "look and feel" of analog and hybrid systems could
be a transition for film manufacturers and hybrid system manufacturers
to digital, digital will not replace media, there will always be
colorants, substrates, filters, etc., but there are some "looks and
feels" that are valuable to digital

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

--
Dale
  #2  
Old March 3rd 14, 03:16 AM posted to sci.engr.color,sci.image.processing,rec.photo.darkroom,rec.photo.digital,comp.soft-sys.matlab
Dale[_4_]
external usenet poster
 
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
  #3  
Old March 3rd 14, 04:40 AM posted to sci.engr.color,sci.image.processing,rec.photo.darkroom,rec.photo.digital,comp.soft-sys.matlab
Dale[_4_]
external usenet poster
 
Posts: 131
Default "look and feel" of film and ICC abstract profiles

On 03/02/2014 10:16 PM, Dale wrote:


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


a good example of historic techniques used in digital manipulation is
Corel Painter

a very wide selection of historic brushes, etc and a sophisticated brush
creator

a colorant mixing palette, hopefully using uvL or xyL as a starting point

this is more of a bitmap "creation" program, but bitmap "editing"
programs like Adobe Photoshop could benefit from additional historic methods

both could benefit from design and systems development techniques too

--
Dale
 




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