[argyllcms] Re: Color space charts
- From: Kris Jensen <kristofor.jensen@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Sat, 24 Sep 2011 12:37:58 -0400
I did some work with mathematica and matlab back in school...I'll take a
peek at the wolfram research documentation and see what I can come up with
while waiting to see if anyone else has any leads.
cheers,
Kristofor
On Sat, Sep 24, 2011 at 11:35 AM, Roger Breton <graxx@xxxxxxxxxxxx> wrote:
> These charts can be generated programmatically or manually, using the
> Standard Observer data, converted from XYZ to sRGB or AdobeRGB. That gives
> you only the spectrum locus shape. And it also gives you the “clipping”
> information, so you get the exact gamut extent of either spaces.****
>
>
> To calculate the inside of the horseshoe, though, some additive color
> mixing is necessary, to calculate the resultant chromaticity coordinates and
> then, you can compute the RGB values for plotting inside Illustrator or
> whatever other graphic utilities. Maybe Graeme has a ready-made utility that
> does the trick in one keystroke? I’ve seen this done, once, at the National
> Research Center in Ottawa, but I never bothered to ask the programmer for
> his code. I wonder if it could be done using Excel? Come to think of it,
> Matlab may already have a command to do just that already? Or even
> Mathematica. I remember seeing, not long ago, some kind of demonstration
> routine that drew the chromaticity diagram right on my PC, with their free
> demo Wolfram Research application?****
>
> ** **
>
> This is something I’d like to do programmatically, some day, but always end
> up having something more urgent to do…****
>
> ** **
>
> Best / Roger****
>
> ** **
>
> *From:* argyllcms-bounce@xxxxxxxxxxxxx [mailto:
> argyllcms-bounce@xxxxxxxxxxxxx] *On Behalf Of *Kris Jensen
> *Sent:* September-24-11 10:23 AM
> *To:* argyllcms@xxxxxxxxxxxxx
> *Subject:* [argyllcms] Color space charts****
>
> ** **
>
> Hi everyone,
>
> Not really argyll related (my appologies) but this is the most focused
> group imaginable for answers on the subject. I am looking for good
> quality, public domain CIE 1931 chromaticity diagrams for sRGB and Adobe RGB
> for use in a photography text about color.
>
> Is there a program in any of the linux repositories that can generate good
> quality ones? So far I have only been able to take screenshots of the
> profile viewer for the draft copy but am looking for something better.
>
> Kindest regards,
>
> Kristofor****
>
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