Hi, > [...] > This xyY is outside of the xy chromaticity diagram > but iictrans report a valid RGB (not the out-of-gamut value). > Is this correct?
It seems so... converting the XYZ across WideGamut profile, as you can see it gives a valid RGB F:\lcms>icctrans -t1 -i*XYZ -o"Wide Gamut RGB.icm" little cms ColorSpace conversion calculator - v1.8 Enter values, 'q' to quit X? 0 Y? .3 Z? .054 R=0.00 G=175.20 B=59.53 Now, back to RGB to check if there is some clipping... F:\lcms>icctrans -t1 -o*XYZ -i"Wide Gamut RGB.icm" little cms ColorSpace conversion calculator - v1.8 Enter values, 'q' to quit R (0..255)? 0 G (0..255)? 175 B (0..255)? 60 X=5.0201 Y=31.7322 Z=5.4474 So, it seems to be near gamut boundary. Regards, Marti Maria The little cms project http://www.littlecms.com ----- Original Message ----- From: "Andrea Galligani" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, December 20, 2004 2:30 PM Subject: Re: [Lcms-user] out-of-gamut condition > Hi, > I used icctrans to check the gamut of some profile. > > Using WideGamutRGB.icc provided in Win2K I found a strange result. > I inserted the XYZ co-ordinate (0, 0.3, 0.054) that is equivalent to > (0, 0.85, 0.3) in xyY. This xyY is outside of the xy chromaticity diagram > but iictrans report a valid RGB (not the out-of-gamut value). > > Is this correct? > > Thanks, > Andrea > > > E:\lcms-1.14\bin>icctrans -t1 -i*XYZ -o*sRGB -g -p WideGamutRGB.icc > little cms ColorSpace conversion calculator - v1.8 > > > Enter values, 'q' to quit > X? 0 > Y? 0.3 > Z? 0.054 > > R=0.01 G=189.16 B=28.65 > > > > > > ------------------------------------------------------- > SF email is sponsored by - The IT Product Guide > Read honest & candid reviews on hundreds of IT Products from real users. > Discover which products truly live up to the hype. Start reading now. > http://productguide.itmanagersjournal.com/ > _______________________________________________ > Lcms-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/lcms-user > ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ Lcms-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/lcms-user
