.ti3 Parser / .3dlut Generator for madVR + .3dlut toolset

[killazys]

Hi nand,

Just to confirm the proper way of going about calibration for playback with madVR. (These are the steps I took.)

1. Calibrate using DispcalGUI to Chromaticity 0.312713x, 0.329016y, White level @ 120.0 cd/m^2, Black level as measured, Gamma 2.35 Relative, no ambient adjustment, 100% black output offset, no black point correction (for LCD monitor). Calibration quality set to High. Profile quality High, type = curves + matrix w/large testchart.

2. Use DispcalGUI to apply calibration.

3. Load resulting files into TI3Parser and uncheck "Automatic calibration (disable your video card's calibration for this).

4. In madVR, load the 3DLut file, and specify pure power gamma to 2.35.

Sound about right? The TI3Parser's automatic calibration worries me.

[dansrfe]

I have a couple of questions. But first I need to share my story. I have a 1920 x 1080, 60Hz laptop screen and a 2048 x 1152, 60Hz monitor which is connected to my laptop via HDMI. I have calibrated my laptop monitor with the built-in Windows calibration tool and I ended up simply decreasing the blue tone and green tone by a bit. That was it for that. I calibrated my external monitor with the built-in Windows calibration tool and I basically did nothing but decrease the gamma but 1 point or "registered mouse movement downwards" (since I don't know what units the scale was in). The rest of the calibration for the monitor (Dell SP2309W) was done via it's built-in OSD. I decreased the brightness and contrast from 75 (factory default) to 70. Then I set the colors to "Custom" and it allowed me to change the RGB values individually. I adjusted the red to 92 and the green to 95 and left the blue at 100. The monitor is in "Graphics" mode by default and I left it there.

I use madVR frequently to view Bluray material and I have been meaning to understand and figure out how to best implement a custom calibration solution with yCMS and 3DLUTs but I have come to the conclusion that I don't know nearly enough to even get started in calibrating both my screens in a correct, procedural manner with this technology.

My question is, what tools, devices, and materials do I need to correctly calibrate both monitors. What are the steps to doing so in the current situation and settings I have changed/"calibrated" with. And finally, what is the correct way to go about calibrating my panasonic plasma tv as well? (the tv was corrected only with the built-in OSD. Mainly the contrast and brightness were brought down to 65 in custom mode).

PS: What does it mean to or what are the differences between calibrating with graphics card software, hardware OSDs, Windows calibration tool and making an ICC file, or using some other calibration software?

Thanks! I would truly like to donate to this project if it works for me as well if the author is taking donations at this time.

[hulkss]

I'm a user of JRiver Media Center in an HTPC. Video playback is achieved with LAV Filters and madVR.

I want to apply color management using a .3dLUT in madVR to correct my projector. The short story to accomplish this is:

1. Use ArgyllCMS with dispcalGUI to generate a XYZ LUT + Matrix.
2. Install and load the ICC profile created with Windows 7 color management.
3. Use LinkICCGUI (from the TI3 Parser toolset) to generate the .3dLUT for madVR.
4. Setup madVR to use the 3D LUT.

My question is: If I uncheck the box (no auto-calibrate) in the GUI window shown below when generating the .3dLUT, will the .3dLUT be made to work properly along with the ICC profile loaded by Windows 7 (both the ICC profile and the .3dLUT in madVR will be active):confused:

http://img705.imageshack.us/img705/8360/linkiccgui.png

[kasper93]

IIRC it's exactly as you described, but the best way is to measure colors after correction and you will be sure.

[e-t172]

My question is: If I uncheck the box (no auto-calibrate) in the GUI window shown below when generating the .3dLUT, will the .3dLUT be made to work properly along with the ICC profile loaded by Windows 7 (both the ICC profile and the .3dLUT in madVR will be active):confused:

I'm also interested in the answer. I would suggest, however, that you do the opposite: configure madVR to disable Windows's gamma ramps during playback and then use a full 3DLUT. This is likely to give better results (less banding because the calibration is done before madVR's dithering).

[hulkss]

I'm also interested in the answer. I would suggest, however, that you do the opposite: configure madVR to disable Windows's gamma ramps during playback and then use a full 3DLUT. This is likely to give better results (less banding because the calibration is done before madVR's dithering).

OK, I'll try both methods this weekend. I won't install the ICC profile and I'll check the auto-calibrate box when I make the 3D LUT and the other way as mentioned above.

Update:
Seems to work fine both ways, I checked for banding with a full screen gray scale ramp (I'm using Intel HD4000 graphics with HDMI monitor connection @ 1920 x 1080). I prefer to install the ICC profile with Windows 7 for global gray scale correction. MadVR 3D LUT then corrects color gamut during video playback.

I posted instructions here: How To Get Perfect Video Color (http://yabb.jriver.com/interact/index.php?topic=78302.0)

[zoyd]

What are the specs on the .3dlut created this way, how many gamut points are remapped in madVR? thanks.

[MSL_DK]

What are the specs on the .3dlut created this way, how many gamut points are remapped in madVR? thanks.

Hello ... Are you the same zoyd (http://www.avsforum.com/u/7635732/zoyd) If you are, I thank you for the work with HCFR!

Are you planning gamut & gamma correction (.3 dlut generator) through HCFR? ;)

[zoyd]

Hi! yes that's me. :) No, sorry, I couldn't get close to what dispcalGUI/ArgyllCMS could do. I was just curios about 3DLUTs in general, especially for displays like mine which have good onboard CMS systems. I did some testing I might post about on avsforums with the Argyll profiles->3dlut->madVR corrections.

[MSL_DK]

Ahh .. Okay :-) I will look for your result :-)

[MvB]

hi nand chan
I have an error with ti3parser :
System.execption : failed parsing the ti3 file : Sample_ID RGB_R .... not found
I use Argyll 1.4 and dispcalgui 1.0.7.7
here my ti3 file http://www.mediafire.com/?k847ll93lggxp3z
Thank you for your consideration

Hi all,

i get the same error. I use the newset argyl 1.5 and the newest dispcalgui. Profile created was XYZ + matrix.

When i try to convert the created profile to .3dlut i get the same error. Does anybody know what i did wrong?
Thanks
MvB

[darkbasic]

hi nand chan
I have an error with ti3parser :
System.execption : failed parsing the ti3 file : Sample_ID RGB_R .... not found
I use Argyll 1.4 and dispcalgui 1.0.7.7
here my ti3 file http://www.mediafire.com/?k847ll93lggxp3z
Thank you for your consideration

Hi all,

i get the same error. I use the newset argyl 1.5 and the newest dispcalgui. Profile created was XYZ + matrix.

When i try to convert the created profile to .3dlut i get the same error. Does anybody know what i did wrong?
Thanks
MvB

http://files.linuxsystems.it/files/film_notte/ti3parser_error.jpg

Same problem here, Argyll 1.5.1.

Note that the .ti3 file does not contain the calibration curves because the monitor is hardware calibrated, as a consequence there is also no vcgt tag in the profile.

This is how I created the monitor profile (after the hardware calibration):

targen -v -d3 -f2000 film_notte
dispread -v -H -Ibw film_notte
colprof -v -qh -aX -S C:\Windows\System32\spool\drivers\color\AdobeRGB1998.icc -cmt -dmt film_notte

ti1: film_notte.ti1 (http://files.linuxsystems.it/files/film_notte/film_notte.ti1)
ti3: film_notte.ti3 (http://files.linuxsystems.it/files/film_notte/film_notte.ti3)
icm: film_notte.icm (http://files.linuxsystems.it/files/film_notte/film_notte.icm)

I hope it helps and the problem will be fixed soon :)

[IceB]

Hello nand chan and all.

I have some troubles with the TI3 parsing results with my config.
The stream is HTPC with Nvidia GT430 --> AVR Anthem MRX 300 --> JVC X30 PJ all properly connected with the HDMI cables.
The color space is YCbCr through the Nvidia CP with limited range 16-235.
The HTPC usage is for watching HD material only - Blu Ray mostly.
The software is MPC-HC with Core AVC as a preferred H264 decoder ( 16-235 IN/16-235 OUT ) / LavVideo decoder for VC1 with CUDA ( 16-235 ) / madVR as a rendered (16-235 ).
The projectors HDMI is configured for the limited range.
This way I have reached the best PQ with BTB/WTW .
I have calibrated the projector greyscale/gamma first with AVS HD 709 MP4 patterns through the MPC-HC with DTP-94 meter.
Then I have decided to run through the dicpcalGUI with Argyll CMS since my previous results with this calibration were good with my TV after the 3DLUT implementation on the madVR.
I have checked the black/white level as measured on dispcalGUI with no black point compensation and gamma 2.4.
The result seems to be fine for the desktop, but I do not care of that.
Once I have parsed the TI3 file and placed it on the madVR i have lost my "blacks".
The overall color seems to be fine but I have not made any data meters since the blacks were red.
Removing the calibration 3dLUT file from the madVR settings brings back the blacks immediately.
Googling the issue I have found the following "Chroma Subsampling" (http://www.glennchan.info/articles/technical/chroma/chroma1.htm) article which seems like a description for the reason of the issue.
It is the first time I am using the dispcalGUI with TI3 parser on the YCbCr color space. Is it the reason ?
I would like to use the 3dLUT file for the color correction with the MPC-HC and madVR on top of the gamma/greyscale manual correction .

Is there any workaround ?

Thank you in advance.

[alamagar]

I just got this error message after trying to create a 3dlut with LinkICC.

http://i285.photobucket.com/albums/ll68/Petiflo/f8e68a8a.png

First time I ever had this message. Any ideas?

Hi:

I'm getting the same error reported here. I've tried to profile with less measures: 238, but the error remains.

I've not seen the solution to this issue.
Any idea?

Thanks in advance.

[IceB]

Hi:

I'm getting the same error reported here. I've tried to profile with less measures: 238, but the error remains.

I've not seen the solution to this issue.
Any idea?

Thanks in advance.

I've got the same error previously with the new version of dispcalGUI.

It seems to be related to the white/black point drift compensation option that was implemented in the newer dispcalGUI.

In case this option is enabled, try to disable it and to recalibrate.

It solved this error in my case.

[alamagar]

I've got the same error previously with the new version of dispcalGUI.

It seems to be related to the white/black point drift compensation option that was implemented in the newer dispcalGUI.

In case this option is enabled, try to disable it and to recalibrate.

It solved this error in my case.

White and black point drift compensation are disabled. Tried to profile disabling "Black Point Compensation" in profile settings with same error.
any other idea?

[alamagar]

White and black point drift compensation are disabled. Tried to profile disabling "Black Point Compensation" in profile settings with same error.
any other idea?

I solved the error by chnaging the Reference Control in Calibration Settings from Daylight to Blackbody.

Perhaps I misinterpreted the meaning of this setting. Does It refer to the ambient light when you are calibrating/profiling or the intended ambien light when you usually watch movies?

[James Freeman]

What in the world is this???

http://i557.photobucket.com/albums/ss18/ilya-v/Other/3dlutFail_zps373571bc.jpg~original

[kasper93]

You shouldn't care and you shouldn't use this tool. Here is a proper way to make 3dlut for madVR http://www.avsforum.com/t/1471169/madvr-argyllcms/

[markanini]

I know this is an ignorant question but here goes: Why can't MadVR have the option of quick-dirty remapping to 601/709? My monitor is already calibrated to sRGB through DispcalGUI + Spyder colorimeter.