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This thread is dedicated to the discussion of the usage of the ArgyllCMS tools to create 3D color look-up tables for the eeColor box . You may also be interested in using these tools for your HTPC with the MadVR rendering package.
For those DIYers who would like a free, very powerful cLUT generator for their eeColor box you can now use the ArgyllCMS tools to write out a properly formatted color look-up table (cLUT) for this device. Many thanks to Graeme Gill for implementing this into his software package! Also, a thank you to Florian Höch for developing dispcalGui and initial work on generating 3DLUT formatted output for the eeColor box.
I started out with a simple 2 pt. grayscale + brightness/contrast calibration and put the color control on native (it's worst setting). Using the ArgyllCMS tools I then calibrated the video card to the same white point, average gamma and peak white setting. Next I profiled the display using 3 different patch sets, 750 OFPS (Optimized Farthest Point Sampling), 1500 OFPS, and a 17x17x17 regular cube. Using the profile ArgyllCMS calculates the mapping required to match your source space (Rec709 for us) to your device and generates the 3DLUT in a format that can be uploaded by the eeColor TruVue application.
Here are some results using my Samsung D8000 display. All measurements were made with a Display Pro (D3) profiled against an i1Pro Rev E (2) spectrometer. After loading each 3DLUT to the eeColor box, I remeasured the same 750 OFPS patch set used to create the 1st 3DLUT.
The 750 patch profile set did an excellent job at reducing errors at all but 6% of the patches where errors actually increase (see plot note). Upping the density to 1500 smoothed out some of those bumps but the 17^3 profile had no statistical advantage over the 1500 OFPS.
Saturation runs at 75% stimulus through YCbCr chain (DVD player w/GCD disk)
Before cLUT
After with 750 OFPS based cLUT
After with 1500 OFPS based cLUT
After with 17^3 grid based cLUT
I have done one other cLUT test starting first with a calibration using the display internal CMS. The only advantage here was that I could reduce the number of patches in the profile to 500 and achieve the same performance as above.
There was some concern expressed in one of the other 3DLUT threads about the stability of the D3 using adaptive mode on Plasmas. I did many tests using the ArgyllCMS drivers for this device which have been specifically fine-tuned to optimize both speed and precision on refresh displays. I found absolutely no problems in repeatability or sensitivity with these measurements. The minimum integration time is set for 400 ms but you can manually override that if desired.
I will follow up in next post with a tutorial.
More data on the eeColor processor performance using various software packages can be found here .
For those DIYers who would like a free, very powerful cLUT generator for their eeColor box you can now use the ArgyllCMS tools to write out a properly formatted color look-up table (cLUT) for this device. Many thanks to Graeme Gill for implementing this into his software package! Also, a thank you to Florian Höch for developing dispcalGui and initial work on generating 3DLUT formatted output for the eeColor box.
I started out with a simple 2 pt. grayscale + brightness/contrast calibration and put the color control on native (it's worst setting). Using the ArgyllCMS tools I then calibrated the video card to the same white point, average gamma and peak white setting. Next I profiled the display using 3 different patch sets, 750 OFPS (Optimized Farthest Point Sampling), 1500 OFPS, and a 17x17x17 regular cube. Using the profile ArgyllCMS calculates the mapping required to match your source space (Rec709 for us) to your device and generates the 3DLUT in a format that can be uploaded by the eeColor TruVue application.
Here are some results using my Samsung D8000 display. All measurements were made with a Display Pro (D3) profiled against an i1Pro Rev E (2) spectrometer. After loading each 3DLUT to the eeColor box, I remeasured the same 750 OFPS patch set used to create the 1st 3DLUT.
The 750 patch profile set did an excellent job at reducing errors at all but 6% of the patches where errors actually increase (see plot note). Upping the density to 1500 smoothed out some of those bumps but the 17^3 profile had no statistical advantage over the 1500 OFPS.
Saturation runs at 75% stimulus through YCbCr chain (DVD player w/GCD disk)
Before cLUT
After with 750 OFPS based cLUT
After with 1500 OFPS based cLUT
After with 17^3 grid based cLUT
I have done one other cLUT test starting first with a calibration using the display internal CMS. The only advantage here was that I could reduce the number of patches in the profile to 500 and achieve the same performance as above.
There was some concern expressed in one of the other 3DLUT threads about the stability of the D3 using adaptive mode on Plasmas. I did many tests using the ArgyllCMS drivers for this device which have been specifically fine-tuned to optimize both speed and precision on refresh displays. I found absolutely no problems in repeatability or sensitivity with these measurements. The minimum integration time is set for 400 ms but you can manually override that if desired.
I will follow up in next post with a tutorial.
More data on the eeColor processor performance using various software packages can be found here .