I had the same experience using several commercial ICC packages too... A color scientist at my last company explained that it was a failing of the ICC specification itself (in the way transforms were calculated), but I dont' know if that's 100% correct.
Our solution was to hand-edit the red curve... not a scientific process as much as an artistic one, sorry! Kevin. ----- Original Message ----- From: "robert bergs" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, August 18, 2003 6:57 AM Subject: [Lcms-user] Some colours appear wrong > I am using Little CMS to profile a Kodak i260 scanner using the Kodak IT > 8.7/2-1993 target. In use LCMS is brilliant - I found it very easy to create and > use the colour profiles. On the whole the results are great, but for one problem: > > I have found that areas of bright red on the original piece are being converted > to a bright orange after they have had my profile applied. I am using the sRGB > space as the output profile. > > I followed the advice that Hugh Brackett posted to this list a few days back > (thanks, Hugh) - but the scanner's interface is very poor and does not allow me > to alter the Gamma, shadow, highlight or even brightness and contrast. All I can > do is select one from 5 'color tables' geared up for photo or text scans. The > setting named 'Mixed2' gave the most even histogram and a dE of 2.08. Applying > the profile to the original IT8 scan does give visually pleasing results, and > most images come out fine. It's just the bright reds that are wrong. > > Has anyone else experienced a similar problem? Is it possible to 'tweak' the > profile to fix this? Could it be a bug in lcms? Or am I just doing something wrong? > > Any advice would be greatly appreciated, > > Robert Bergs > > > ------------------------------------------------------- > This SF.Net email sponsored by: Free pre-built ASP.NET sites including > Data Reports, E-commerce, Portals, and Forums are available now. > Download today and enter to win an XBOX or Visual Studio .NET. > http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 > _______________________________________________ > Lcms-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/lcms-user > > ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ Lcms-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/lcms-user
