RE: Gamma calculation?
RE: Gamma calculation?
- Subject: RE: Gamma calculation?
- From: "Michael Fox Photography News Account" <email@hidden>
- Date: Wed, 26 Oct 2005 18:37:49 -0700
- Organization: Michael Fox Photography
Thanks much Robin and Danny.
------------
Michael Fox Photography - Fine Art Nature Photography
http://www.michaelfoxphoto.com
> -----Original Message-----
> From: email@hidden [mailto:email@hidden]
> Sent: Wednesday, October 26, 2005 6:29 PM
> To: Michael Fox Photography News Account; 'ColorSync Users Mailing List'
> Subject: Re: Gamma calculation?
>
> Michael,
>
> Here is a simple gamma formula (with gamma=2.6):
>
> Y = 255 (X / 255)^2.6
>
> As you see, you divide by 255 first to limit the input
> values between zero and one, and rescale after the gamma
> calculation.
>
> For more info, here is a tutorial I wrote on the math
> between xyY and RGB:
> http://www.babelcolor.com/download/A review of RGB color spaces.
> pdf
>
> Danny Pascale
>
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden