Re: darkening colour

From	Bartc <bc@freeuk.com>
Newsgroups	comp.programming
Subject	Re: darkening colour
Date	2015-04-06 16:02 +0100
Organization	A noiseless patient Spider
Message-ID	<mfu747$pn9$1@dont-email.me> (permalink)
References	(2 earlier) <c4f6823f-25e4-4a41-b999-25015a70fa68@googlegroups.com> <mfu0vj$2cm$1@dont-email.me> <c9464ca8-40fe-41b5-812b-03099f1e3915@googlegroups.com> <mfu298$71p$1@dont-email.me> <074c34c3-d929-497c-a7b1-cab576354c2f@googlegroups.com>

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On 06/04/2015 14:48, fir wrote:
> W dniu poniedziałek, 6 kwietnia 2015 15:39:45 UTC+2 użytkownik Bart napisał:
>> On 06/04/2015 14:27, fir wrote:

>> That doesn't explain it either. Why don't you just try the simpler
>> formula and see it if makes a visible difference? If not, then you can
>> try and see if a table lookup is quicker.
>>
>> (I would say that most people wouldn't be able to tell if the colour
>> balance is not quite right on a partly desaturated image. Such an image
>> is unnatural anyway.)
>>
> this sesaturation is working enough okay as for this moment
>
> you may test it
> https://www.dropbox.com/s/3nm8q09fesoksxa/v21.zip?dl=0
> (no malware as i said)

I don't know what I'm supposed to be looking at here. What is the 
problem you're trying to solve? Are any of these before and after?

But the rendering is crude enough that I doubt many will notice if the 
colour balance is a bit off.

Some of the objects do have garish (ie. highly saturated) colours, but 
that would just be a bad choice of base colour: you can 'desaturate' by 
choosing a different colour. You do't need to deal with it by complex 
real-time per-pixel transformations.

-- 
Bartc

Thread

darkening colour fir <profesor.fir@gmail.com> - 2015-04-06 01:12 -0700
  Re: darkening colour "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2015-04-06 10:52 +0200
    Re: darkening colour Bartc <bc@freeuk.com> - 2015-04-06 11:21 +0100
      Re: darkening colour "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2015-04-06 12:44 +0200
        Re: darkening colour Bartc <bc@freeuk.com> - 2015-04-06 12:54 +0100
          Re: darkening colour "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2015-04-06 14:27 +0200
          Re: darkening colour fir <profesor.fir@gmail.com> - 2015-04-06 05:51 -0700
    Re: darkening colour fir <profesor.fir@gmail.com> - 2015-04-06 04:38 -0700
      Re: darkening colour "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2015-04-06 14:52 +0200
        Re: darkening colour fir <profesor.fir@gmail.com> - 2015-04-06 06:25 -0700
          Re: darkening colour "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2015-04-06 17:02 +0200
            Re: darkening colour fir <profesor.fir@gmail.com> - 2015-04-06 09:36 -0700
              Re: darkening colour "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2015-04-07 10:52 +0200
                Re: darkening colour fir <profesor.fir@gmail.com> - 2015-04-07 02:10 -0700
                Re: darkening colour "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2015-04-07 11:30 +0200
                Re: darkening colour fir <profesor.fir@gmail.com> - 2015-04-07 03:24 -0700
                Re: darkening colour "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2015-04-07 13:00 +0200
      Re: darkening colour Bartc <bc@freeuk.com> - 2015-04-06 14:17 +0100
        Re: darkening colour fir <profesor.fir@gmail.com> - 2015-04-06 06:27 -0700
          Re: darkening colour Bartc <bc@freeuk.com> - 2015-04-06 14:39 +0100
            Re: darkening colour fir <profesor.fir@gmail.com> - 2015-04-06 06:48 -0700
              Re: darkening colour Bartc <bc@freeuk.com> - 2015-04-06 16:02 +0100
                Re: darkening colour fir <profesor.fir@gmail.com> - 2015-04-06 09:44 -0700
                Re: darkening colour Bartc <bc@freeuk.com> - 2015-04-06 21:05 +0100
                Re: darkening colour fir <profesor.fir@gmail.com> - 2015-04-07 00:51 -0700
                Re: darkening colour fir <profesor.fir@gmail.com> - 2015-04-07 01:12 -0700

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