[argyllcms] Re: HSB/HSV and HSL calculation
- From: tresorjoe email <tresorjoe@xxxxxxxxxxx>
- To: <argyllcms@xxxxxxxxxxxxx>
- Date: Fri, 6 Mar 2009 09:12:48 +0000
Peter, Andrew,
Thanks for your replies.
We are currently using a similar calculation, even a little more optimized in
terms of performance (compared to e.g. easyRGB.com). The problem we have is
that this conversion takes about 50% of the time needed for the complete color
engine, especially the calculation of "H". Maybe there's an optimized code that
does the calculation rather much quicker than the current ones.
PS: As for integer or floating point, again, the question is performance of the
conversion...
Regards,
Joe
> From: peterchan.ml@xxxxxxxxx
> To: argyllcms@xxxxxxxxxxxxx
> Subject: [argyllcms] Re: HSB/HSV and HSL calculation
> Date: Fri, 6 Mar 2009 15:53:50 +0800
>
> On Thu, Mar 5, 2009 at 3:16 AM, tresorjoe email
> <tresorjoe@xxxxxxxxxxx>wrote:
> > I am looking for a very fast RGB -> HSB/HSV or RGB -> HSL conversion
> > function. Does anybody have some calculations done based on integer
> > values,
> > "C" language?
>
>
> There is C source based on easyrgb.com formulas,
>
> http://www.tecgraf.puc-rio.br/~mgattass/color/ColorIndex.html
>
> Integer ? Conversion from floating point should be no problem.
>
> Peter C.
>
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