-------- Original-Nachricht -------- > Datum: Fri, 12 Aug 2011 09:00:45 +1000 > Von: Graeme Gill <graeme@xxxxxxxxxxxxx> > An: argyllcms@xxxxxxxxxxxxx > Betreff: [argyllcms] Re: camera calibration targets > Because it objects to the -ve values, because the ICC spec. > forbids them. Hi Graeme, I'm actually wondering how the following note in the ICC spec should be interpreted? "5.1.11 XYZNumber ... "NOTE 2: Signed numbers are employed for this type to accommodate negative values arisiing during calculations." > [The ICC is in error in not allowing -ve values, since > such values are perfectly valid in matching the response > of input devices, even though they are much less likely in > matching the response of output devices that would have to > have primary colorants with such XYZ values. ] Best Regards, Gerhard -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de