lcms-user

[Lcms-user] XYZ to RGB with an ICC profile

[Chen Xu <xuc...@gm...>]

Hello,

  I'm new to color management system. In a project, I need to convert XYZ
values to RGB values via an ICC profile.

  What I do is I create an XYZ profile using lcms and then simply create a
transform with the XYZ profile and the profile provided to convert values.

  I know that in ICC world, XYZ should be normalized. My question is
whether they should be devided by 100 or by the Y max ?

  Thank you in advance.

Regards,
  Chen XU

Re: [Lcms-user] XYZ to RGB with an ICC profile

[Marti M. <mar...@li...>]

Hi,

ICC notation needs XYZ divided times 100. Always 100, no matter which is 
Y max.

For example, D50 ( 96, 100, 82) in ICC notation is ( 0.96, 1.0, 0.82)

Regards
Marti



El 22/08/2012 17:58, Chen Xu escribió:
> Hello,
>   I'm new to color management system. In a project, I need to convert 
> XYZ values to RGB values via an ICC profile.
>   What I do is I create an XYZ profile using lcms and then simply 
> create a transform with the XYZ profile and the profile provided to 
> convert values.
>   I know that in ICC world, XYZ should be normalized. My question is 
> whether they should be devided by 100 or by the Y max ?
>   Thank you in advance.
> Regards,
>   Chen XU
>
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
>
>
> _______________________________________________
> Lcms-user mailing list
> Lcm...@li...
> https://lists.sourceforge.net/lists/listinfo/lcms-user