Re: [Lcms-user] Trouble using Bruce Lindblooms UPLab

2012-04-10 Thread Oliver Duis
Good evening Marti, Thanks for testing! I tried it with Lab in floating point as input/output (using cmsCreateLab2Profile/4 functions), maybe that's a difference. I also noticed that the color generally change a little bit, which would explain the deltas you are measuring. It's just this one color

Re: [Lcms-user] Trouble using Bruce Lindblooms UPLab

2012-04-10 Thread marti . maria
Hello Oliver, Tried, and it works quite well to me. I have converted the JPEG to TIFF in order to avoid compression artifacts. I'm also using AdobeRGB as source space because the JPEG has no embedded profile. The procedure is to convert the file to UPLab and then back to aRGB. Intent is relative

[Lcms-user] Trouble using Bruce Lindblooms UPLab

2012-04-09 Thread Oliver Duis
Hello, I'm trying to get UPLab up and running: http://brucelindbloom.com/index.html?UPLab.html using the LCMS compatible ICC profile version (see page down below). If I just transform twice, an empty round trip Lab>UPLab>Lab, in float mode, I'd expect the colors not to change as long as