Hi, Justus Jonas wrote:
> I'm a beginner and my intention is to create a printer profile. I trying > to build a simple RGB icc printer profile using LCMS from a CGATS file > measured with Eye-One Pro from a EPSON printer (288 patches). Unless you especially want to do the programming for this yourself, you might find that ArgyllCMS is a better fit for your needs - it has a complete workflow for profiling, and with a bit of spreadsheet work it's easy enough to use an arbitrary set of data points. > My question: Is is feasible to build a 3D lut just with the 288 clut > entrys the measured 288 spectral data? As I understand it, you can't just stick your 288 data points in the profile's LUT - but you can certainly build a more complete, traditionally-sized LUT from those data points using interpolation - again Argyll does this. How accurate the resulting profile will be depends on how well chosen those data points are, and how well-behaved the device is. With all the inbuilt colour-correction turned off, I've found six-colour Epson inkjets to be extremely good from that point of view. For what it's worth, I've generated a profile for inkjet printable DVDs using just 144 points and I get very nice results. I'm sure the resulting profile isn't accurate enough for spot-colour matching, but that's not what I'm trying to do! All the best, -- Alastair M. Robinson ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
