POV-Ray : Newsgroups : povray.off-topic : Usefulness of CIELCH Server Time
23 Dec 2024 02:16:05 EST (-0500)
  Usefulness of CIELCH (Message 1 to 7 of 7)  
From: Mike Horvath
Subject: Usefulness of CIELCH
Date: 15 Dec 2016 19:15:04
Message: <58533208$1@news.povray.org>
I had hoped that using CIELCH I could pick a value for L and a value for 
C, and then have a nice range of Hues to choose from to create a hue 
circle with equal lightness and saturation.

Unfortunately, this is only possible for very low values of Chroma. I 
could not find any such colors above a value of 40 that did not start 
expanding outside the sRGB gamut.

Which sucks.

:(

Mike


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From: Mike Horvath
Subject: Re: Usefulness of CIELCH
Date: 15 Dec 2016 19:45:12
Message: <58533918@news.povray.org>
On 12/15/2016 7:15 PM, Mike Horvath wrote:
> I had hoped that using CIELCH I could pick a value for L and a value for
> C, and then have a nice range of Hues to choose from to create a hue
> circle with equal lightness and saturation.
>
> Unfortunately, this is only possible for very low values of Chroma. I
> could not find any such colors above a value of 40 that did not start
> expanding outside the sRGB gamut.
>
> Which sucks.
>
> :(
>
> Mike

This is what I'm using the colors for, BTW.

http://isometricland.net/keyboard/keyboardchart.php?gam=51&sty=15&lay=1

Mike


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From: clipka
Subject: Re: Usefulness of CIELCH
Date: 15 Dec 2016 20:45:17
Message: <5853472d$1@news.povray.org>
Am 16.12.2016 um 01:15 schrieb Mike Horvath:
> I had hoped that using CIELCH I could pick a value for L and a value for
> C, and then have a nice range of Hues to choose from to create a hue
> circle with equal lightness and saturation.
> 
> Unfortunately, this is only possible for very low values of Chroma. I
> could not find any such colors above a value of 40 that did not start
> expanding outside the sRGB gamut.
> 
> Which sucks.
> 
> :(

Welcome to the world of colour perception! :P


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From: Mike Horvath
Subject: Re: Usefulness of CIELCH
Date: 15 Dec 2016 20:52:58
Message: <585348fa$1@news.povray.org>
On 12/15/2016 7:45 PM, Mike Horvath wrote:
> On 12/15/2016 7:15 PM, Mike Horvath wrote:
>> I had hoped that using CIELCH I could pick a value for L and a value for
>> C, and then have a nice range of Hues to choose from to create a hue
>> circle with equal lightness and saturation.
>>
>> Unfortunately, this is only possible for very low values of Chroma. I
>> could not find any such colors above a value of 40 that did not start
>> expanding outside the sRGB gamut.
>>
>> Which sucks.
>>
>> :(
>>
>> Mike
>
> This is what I'm using the colors for, BTW.
>
> http://isometricland.net/keyboard/keyboardchart.php?gam=51&sty=15&lay=1
>
> Mike

Here's a different one:

http://isometricland.net/keyboard/keyboardchart.php?gam=51&sty=16&lay=1

Mike


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From: Cousin Ricky
Subject: Re: Usefulness of CIELCH
Date: 12 Jan 2017 18:02:37
Message: <58780b0d$1@news.povray.org>
On 2016-12-15 09:45 PM (-4), clipka wrote:
> Welcome to the world of colour perception! :P

The more I learn about color, the more I am stunned at how much more 
there is that I don't understand.  The more I understand about color, 
the less confident I am about what I understand.


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From: clipka
Subject: Re: Usefulness of CIELCH
Date: 12 Jan 2017 19:15:32
Message: <58781c24$1@news.povray.org>
Am 13.01.2017 um 00:05 schrieb Cousin Ricky:
> On 2016-12-15 09:45 PM (-4), clipka wrote:
>> Welcome to the world of colour perception! :P
> 
> The more I learn about color, the more I am stunned at how much more
> there is that I don't understand.  The more I understand about color,
> the less confident I am about what I understand.

When I'm not busy programming colour management stuff for POV-Ray, I'm
actually quite happy to just go with "it's complicated" :P


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From: Bald Eagle
Subject: Re: Usefulness of CIELCH
Date: 13 Jan 2017 10:15:00
Message: <web.5878eedd11c0babac437ac910@news.povray.org>
clipka <ano### [at] anonymousorg> wrote:

> When I'm not busy programming colour management stuff for POV-Ray, I'm
> actually quite happy to just go with "it's complicated" :P

https://s-media-cache-ak0.pinimg.com/600x315/91/52/8d/91528d3952b8b1ffaa761c0efe54062e.jpg

:D


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