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Article #125

Re: Colour recovery [Was: Regex and more! [Was: Crossword puzzle]]

#125
From: Bob Larter
Date: Wed, 11 Nov 2009 09:08
31 lines
2960 bytes
Phred wrote:
> In article <1a96ebe5-6464-4842-8271-932d16229832@j24g2000yqa.googlegroups.com>, "news@rtrussell.co.uk" <news@rtrussell.co.uk> wrote:
>> On Nov 2, 10:43=A0am, ppnerkDELETET...@yahoo.com (Phred) wrote:
>>> So now I'm even more curious -- what do you mean by that "Full
>>> gamut colour recovery"?
>> http://colourrecovery.wikispaces.com/
> 
> Thanks for that info Richard.  I must admit I was mainly interested 
> because I have some old colour pics and slides that have seriously 
> degraded (especially 30-year-old Ectachrome slides taken when I was 
> foolish and ignorant enough to use it instead of Kodachrome).
> 
> From what I gather, your technique depends on "clues" in the recorded 
> image(s), so wouldn't be of much use to me? :-(
> 
> [But I admit I haven't yet followed *all* the links on that site.]

The process relies on residual chroma information retained on 
cine-recorded colour TV programs, so it's of no use for film.

Personally, I recover faded photos by scanning them (with as many bits 
per colour channel as possible), then re-levelling R,G & B in Photoshop 
(16 bit mode). It gives you a pretty good result, & with some tweaking, 
an excellent result - even on badly faded colour prints dating back to 
the 70's.

-- 
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  . | ,. w ,   "Some people are alive only because
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Date: Wed, 11 Nov 2009 19:08:58 +1000
From: Bob Larter <bobbylarter@gmail.com>
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Subject: Re: Colour recovery [Was: Regex and more! [Was: Crossword puzzle]]
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