Re: [Lcms-user] sRGB <--> XYZ transforms

[<ma...@li...>]

Hi,

??? In my test program I do obtain D65 as XYZ when feed with 0xff, 0xff, =
0xff, and the back transform also
returns 0xff, 0xff, 0xff.

I am sending the program to you. If anybody else is interested, please =
let me know and I will send it as well.

Regards,
Mart=ED.

  ----- Original Message -----=20
  From: Richard Mitanchey=20
  To: lcm...@li...=20
  Sent: Friday, July 06, 2001 9:29 AM
  Subject: [Lcms-user] sRGB <--> XYZ transforms


  Dear list members,
  I'm confused with sRGB <--> XYZ transforms (yes, I've read the Annex B =
of tutorial, and used cmsFLAGS_NOTPRECALC with =
INTENT_ABSOLUTE_COLORIMETRIC)
  My observations are:
  sRGB white point (255, 255, 255) is transformed into (30457, 32152, =
35275) XYZ color, and back-transformed to sRGB gray point (240, 248, =
250).
  Is there any way to prevent this, or am I performing a bad transform ?
  Thank you in advance
  Richard Mitanchey=20
  Ing=E9nieur des TPE, Docteur en Informatique=20
  Groupe Lumi=E8re et Rayonnement Electromagn=E9tique=20
  Laboratoire des Sciences de l'Habitat (LASH)=20
  D=E9partement G=E9nie Civil et B=E2timent (DGCB) URA CNRS 1652=20
  Ecole Nationale des Travaux Publics de l'Etat=20
   =20
   =20